CN110772273A - Radiography system with anti-collision mechanism of bearing bed and anti-collision method thereof - Google Patents
Radiography system with anti-collision mechanism of bearing bed and anti-collision method thereof Download PDFInfo
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- 238000002601 radiography Methods 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 42
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- 238000003384 imaging method Methods 0.000 claims abstract description 42
- 238000003032 molecular docking Methods 0.000 claims description 12
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- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
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Abstract
An imaging system comprises a machine table, a bearing bed, an X-ray module and an image detection module which are arranged on two opposite sides of the machine table, a processing unit and a human-computer interface used for providing a plurality of imaging modes, wherein each imaging mode corresponds to different imaging distances. When the bearing bed is installed on the machine table, the processing unit identifies the type of the bearing bed through the machine table, and determines the safe distance between the X-ray module and the image detection module relative to the bearing bed according to the type of the bearing bed. And when the contrast distance of a specific contrast mode in the plurality of contrast modes is smaller than the safety distance, the processing unit disables the specific contrast mode on the human-computer interface.
Description
Technical Field
The invention relates to an imaging system, in particular to an imaging system capable of preventing a carrying bed from being collided and an anti-collision method thereof.
Background
The radiography system mainly comprises an X-ray module for emitting X-rays, an image detection module for detecting the X-rays to generate images, and a carrying bed which is arranged on an irradiation path of the X-rays and is used for carrying an irradiated object.
Generally, the distance between the X-ray module and the bed is equal to the distance between the image detection module and the bed. When the radiography program is executed, the X-ray module and the image detection module take the carrying bed as a circle center, and rotate clockwise or anticlockwise relative to the carrying bed, so that an X-ray image of an irradiated object is generated.
The user may need images of different resolutions for different objects to be illuminated (e.g., different animals). In a general radiography system, the radiography system can adjust the resolution of the image by adjusting the distance between the X-ray module or the image detection module and the carrying bed, so as to obtain the Field of View (FoV) required by the user.
However, for different sizes of objects to be irradiated, the imaging system may need to install different kinds of carrying beds, and the different kinds of carrying beds may have different volumes (such as width and height).
As can be seen from the above, if the user needs a higher resolution, the distance between the X-ray module or the image detection module and the bed will be smaller. If the experience of the user is insufficient and an inappropriate resolution is selected, the X-ray module or the image detection module may collide with the support bed during the rotation process to cause damage because the support bed has a too large volume and the distance between the X-ray module or the image detection module and the support bed is too small.
Disclosure of Invention
The present invention is directed to an imaging system with a crash-proof mechanism for a carrying bed and a crash-proof method thereof, which can identify the type of the carrying bed currently installed, and automatically determine one or more imaging modes that can be selected by a user according to the type of the carrying bed.
In order to achieve the above object, the radiography system with a collision avoidance mechanism of a carrying bed of the present invention mainly comprises: a machine table; a bearing bed detachably mounted on the machine platform; an X-ray module and an image detection module arranged on two opposite sides of the machine platform; a processing unit; and a human-computer interface for providing a plurality of contrast modes, wherein the contrast modes respectively correspond to different contrast distances.
When the bearing bed is installed on the machine table, the processing unit identifies the type of the bearing bed through the machine table. Then, the processing unit determines a safe distance between the X-ray module and the image detection module relative to the carrying bed according to the type of the carrying bed. And when the contrast distance of a specific contrast mode in the plurality of contrast modes is smaller than the safe distance, the processing unit disables the specific contrast mode on the human-computer interface.
Compared with the related art, the invention has the technical effects that the radiography system can determine different safe distances according to different carrying beds, and can forbid one or more radiography modes with too small radiography distance according to the safe distances. Therefore, a user cannot select the contrast mode with the excessively small contrast distance during operation, and the situation that the X-ray module and the image detection module collide with the carrying bed in the moving process due to the fact that the user selects the inappropriate contrast mode is avoided.
Drawings
Fig. 1 is a first embodiment of a schematic representation of an imaging system of the present invention.
FIG. 2 is a block diagram of a first embodiment of an imaging system of the present invention.
Fig. 3 is a first embodiment of a collision avoidance process of the present invention.
Fig. 4A is a schematic view of a first embodiment of the load-bearing bed of the present invention.
FIG. 4B is a diagram illustrating a human-machine interface according to a first embodiment of the present invention.
Fig. 5A is a schematic view of a second embodiment of the load-bearing bed of the present invention.
FIG. 5B is a diagram illustrating a man-machine interface according to a second embodiment of the present invention.
Fig. 6A is a third embodiment of the carrying bed of the present invention.
FIG. 6B is a diagram illustrating a man-machine interface according to a third embodiment of the present invention.
FIG. 7 is a first embodiment of a visualization flow chart of the present invention.
Fig. 8 is a second embodiment of a schematic representation of the visualization system of the present invention.
1: radiography system
10: processing unit
11: x-ray module
12: image detection module
13: machine table
131: guide connection interface
14: load-bearing bed
141: connection interface
15: storage unit
151: contrast mode
16: human-machine interface
21: first bearing bed
211: connection interface
22: second bearing bed
221: connection interface
23: third bearing bed
231: connection interface
L11: initial first working distance
L12: initial second working distance
L21: adjusted first working distance
L22: second working distance after adjustment
Lw: working distance
L01: first working distance
L02: second working distance
Ls: safe distance
S10-S22: control step
S30-S36: control step
Detailed Description
Now, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, there is shown a first embodiment of a schematic representation of the contrast system of the present invention. The invention discloses an radiography system with a carrying bed collision avoidance mechanism (hereinafter, the radiography system is referred to as the radiography system 1 for short in the specification), wherein the radiography system 1 at least comprises an X-ray module 11, an image detection module 12, a machine table 13 and a carrying bed 14. In this embodiment, the imaging system 1 may be a Computed Tomography (CT) system.
In the embodiment shown in fig. 1, the X-ray module 11 is disposed on one side (e.g., right above) of the machine 13, and the image detection module 12 is disposed on the other side (e.g., right below) of the machine 13 opposite to the X-ray module 11. The load-bearing bed 14 is detachably disposed on the machine table 13. In this embodiment, the carrying bed 14 is disposed between the X-ray module 11 and the image detection module 12, and a working distance Lw is spaced between the X-ray module 11 and the image detection module 12, and the working distance Lw is variable.
Specifically, the working distance Lw refers to a distance between the X-ray module 11 and the image detection module 12, and the working distance Lw includes a first working distance L01 between the X-ray module 11 and the bed 14 and a second working distance L02 between the bed 14 and the image detection module 12.
As shown in fig. 1, the X-ray module 11, the image detection module 12 and the machine 13 are disposed in a straight line. The X-ray module 11 emits X-rays toward the image detection module 12. After the X-ray passes through the carrying bed 14 (i.e., passes through the object to be measured carried on the carrying bed 14), the X-ray is detected by the image detecting module 12, and the image detecting module 12 can generate a corresponding image according to the detected X-ray. When the radiography system 1 executes a radiography process, the X-ray module 11 and the image detection module 12 are controlled to rotate around the supporting bed 14 (or the machine table 13) in a clockwise direction or a counterclockwise direction.
Before the imaging procedure is performed, a user may set a desired resolution, and the imaging system 1 may adjust the working distance Lw according to the resolution set by the user, so that the image detection module 12 has a corresponding Field of View (FoV), so that the generated image has the resolution desired by the user.
In this embodiment, the contrast system 1 may adjust the first working distance L01 and the second working distance L02 of the working distances Lw to obtain the required resolution.
In the first embodiment, the first working distance L01 and the second working distance L02 may be equal distances. In a second embodiment, the first working distance L01 may be greater than the second working distance L02. In a third embodiment, the first working distance L01 may be less than the second working distance L02.
One of the technical features of the present invention is to limit the adjustment range of the working distance Lw to prevent the X-ray module 11 and the image detection module 12 from colliding with the carrying bed 14 (described in detail later) during moving and rotating.
Referring also to FIG. 2, a block diagram of a radiography system according to a first embodiment of the present invention is shown. As shown in fig. 2, the radiography system 1 of the present invention further includes a storage unit 15, a human-machine interface 16, and a processing unit 10 electrically connected to the X-ray module 11, the image detection module 12, the storage unit 15 and the human-machine interface 16.
The processing unit 10 of the present invention mainly identifies the type of the loading bed 14 through the machine 13 when the loading bed 14 is disposed on the machine 13, and obtains a corresponding safety distance Ls in the storage unit 15 according to the type of the loading bed. In this embodiment, the different kinds of load beds 14 have different sizes, and thus correspond to different safety distances Ls. In this embodiment, a larger size of the load bed 14 corresponds to a larger safety distance Ls.
Specifically, the safety distance Ls is a distance extending outward from the center of the support bed 14. As long as the first working distance L01 is smaller than the safety distance Ls, the X-ray module 11 will hit the carrier bed 14 during the imaging procedure. And, as long as the second working distance L02 is less than the safety distance Ls, the image detection module 12 will collide with the carrying bed 14 during the radiography process.
For example, the carrying bed types may include a large carrying bed corresponding to a first safety distance, a medium carrying bed corresponding to a second safety distance, and a small carrying bed corresponding to a third safety distance, wherein the size of the large carrying bed is larger than that of the medium carrying bed, the size of the medium carrying bed is larger than that of the small carrying bed, the first safety distance is larger than the second safety distance, and the second safety distance is larger than the third safety distance.
In the present invention, the safety distance Ls refers to a distance closest to the supporting bed 14 but never colliding with the supporting bed 14 (and the machine table 13) when the processing unit 10 adjusts the working distance Lw according to the safety distance Ls (i.e. the first working distance L01 and the second working distance L02 are respectively equal to the safety distance Ls) and controls the X-ray module 11 and the image detection module 12 to execute the radiography procedure based on the safety distance Ls. In other words, as long as the first working distance L01 and the second working distance L02 are not less than the safety distance Ls, the X-ray module 11 and the image detection module 12 do not collide with the bed 14 and the machine base 13 no matter how they move.
In the first embodiment, the processing unit 10 can sense the weight of the supporting bed 14 when the supporting bed 14 is disposed on the machine table 13, and determine the type of the supporting bed 14 according to the weight. Generally, the larger the size of the load bed 14, the heavier it is, so the processing unit 10 can identify the load bed type of the load bed 14 from the measured weight.
In a second embodiment, the radiography system 1 may further include an image capturing module (not shown) disposed on the table 13, and the processing unit 10 may control the image capturing module to capture an image of the carrying bed 14, perform image analysis on the image, obtain appearance information such as size or shape of the carrying bed 14, and finally determine the type of the carrying bed 14 according to the appearance information. In this embodiment, the carrying beds 14 with different sizes may have different appearances, so the processing unit 10 can identify the carrying bed type of the carrying bed 14 by the appearance.
In the third embodiment, the machine 13 may have a docking interface 131 thereon, and the load bed 14 may have a connection interface 141 thereon. When the supporting bed 14 is disposed on the machine 13, the supporting bed 14 is electrically connected to the machine 13 through the connecting interface 141 and the conductive interface 131. In this embodiment, the processing unit 10 can receive the identification signal sent by the carrying bed 14 through the conducting interface 131 on the machine platform 13 and the connecting interface 141 on the carrying bed 14, and then identify the carrying bed type of the carrying bed 14 according to the content of the identification signal.
In the fourth embodiment, different carrying beds 14 are connected to the docking interface 131 of the machine 13 through the same connection interface 141, and send different identification signals to the machine 13 through the connection interface 141, and indicate different kinds of carrying beds through different identification signals.
In the fifth embodiment, different load beds 14 can be connected to the machine 13 through different connection ports 141, and the different connection ports 141 have different pin configurations. Because the pins of the connection interface 141 are disposed differently, the electrical signals received by the connection interface 131 from the connection interface 141 are different when the support bed 14 is disposed on the machine table 13. The processing unit 10 can determine the identification signal according to the content of the electronic signal received by the docking interface 131, so as to identify the type of the carrying bed.
It should be noted that the above-mentioned embodiments are only examples of the present invention, and should not be construed as limiting the scope of the present invention.
The storage unit 15 stores a plurality of contrast modes 151, and the contrast system 1 provides and displays the plurality of contrast modes 151 through the human-machine interface 16 for selection by the user. In this embodiment, the different contrast modes 151 correspond to different contrast distances, which refer to a first contrast Distance (SOD) between the X-ray module 11 and the bed 14 or a second contrast Distance (OID) between the Image detection module 12 and the bed 14 when the contrast procedure is performed. In other words, the contrast system 1 has different resolutions in each contrast mode 151. When the user selects to perform the contrast procedure with different contrast modes 151, images with different resolutions may be finally generated by the image detection module 12.
In the present invention, the processing unit 10 may determine the safety distance Ls according to the type of the carrying bed 14 currently set on the machine table 13, and determine to display an appropriate contrast mode 151 on the human-machine interface 16 according to the safety distance Ls for the user to select.
Specifically, the processing unit 10 accesses the plurality of contrast modes 151 in the storage unit 15 after deciding the safety distance Ls, and disables one or more contrast modes 151 having a contrast distance smaller than the safety distance Ls among the plurality of contrast modes 151 (i.e., the first contrast distance is smaller than the safety distance Ls, or the second contrast distance is smaller than the safety distance Ls). If the first contrast distance and the second contrast distance of the plurality of contrast modes 151 are both greater than the safety distance Ls, the processing unit 10 enables all the contrast modes 151. Finally, the processing unit 10 regards one or more contrast modes 151 that are not disabled as appropriate contrast modes 151 (i.e., contrast modes suitable for the currently set carrying bed 14), and displays these appropriate contrast modes 151 on the human-machine interface 16 for the user to select.
In one embodiment, the processing unit 10 displays all the contrast modes 151 in the storage unit 15 on the human-machine interface 16, and only allows the user to select one or more of the contrast modes 151 that are not disabled. In another embodiment, the processing unit 10 displays only one or more contrast modes 151 that are not disabled on the human machine interface 16 (i.e., the user may select all contrast modes 151 displayed on the human machine interface 16).
With the above technical solution, the radiography system 1 can disable the contrast mode 151 with a too small contrast distance (including the first contrast distance being too small or the second contrast distance being too small) according to the currently set carrying bed 14, and the user cannot select the contrast mode 151 with the too small contrast distance on the human-machine interface 16, so as to avoid the problem that the X-ray module 11 and the image detection module 12 collide with the carrying bed 14 and/or the machine table 13 during the process of performing the contrast procedure. Too small a contrast distance refers to a contrast distance that is insufficient relative to the size of the support bed 14.
Referring to fig. 3, a first embodiment of an anti-collision flowchart according to the present invention is shown. The invention also discloses a collision avoidance method of the radiography system (hereinafter referred to as collision avoidance method), and fig. 3 is used to illustrate in detail the relevant steps of the collision avoidance method, which are mainly performed by the radiography system 1 shown in fig. 1 and fig. 2.
First, when a user has a contrast request, the contrast system 1 of the present invention needs to be started (step S10). When the imaging system 1 is started, the processing unit 10 first determines whether the loading bed 14 is already set on the machine table 13 (step S12). In the present invention, the radiography system 1 mainly irradiates an object (not shown) to be measured in the carrying bed 14 through the X-ray module 11, and the image detection module 12 detects the X-ray penetrating through the object to be measured and generates a corresponding image. If the table 13 is not provided with the loading bed 14, the radiography system 1 is in a standby state.
After the carrying bed 14 is installed on the machine base 13, the processing unit 10 can identify the carrying bed type of the currently installed carrying bed 14 through the machine base 13 (step S14). Specifically, the processing unit 10 can determine that the loading bed 14 is set on the machine table 13 when the machine table 13 detects the weight of the loading bed 14, captures an image of the loading bed 14, or receives an electrical signal from the loading bed 14. Furthermore, the processing unit 10 can identify the carrying bed type (such as a large carrying bed, a medium carrying bed, or a small carrying bed) of the carrying bed 14 by confirming the identification signal corresponding to the carrying bed 14 according to the weight, the image, or the electronic signal. It should be noted that the above is only a part of the specific implementation examples of the present invention, and should not be limited to the above.
After the step S14, the processing unit 10 further determines a safety distance Ls between the X-ray module 11 and the image detection module 12 relative to the bed 14 according to the type of the bed (step S16).
Specifically, the processing unit 10 queries the storage unit 15 according to the type of the currently set carrying bed 14, and reads a safety distance Ls corresponding to the type of the carrying bed in the storage unit 15. In this embodiment, the safety distance Ls refers to a distance extending outward with the load bed 14 as the center. When the processing unit 10 makes the first working distance L01 equal to the safety distance Ls and makes the second working distance L02 equal to the safety distance Ls, that is, moves and rotates based on the safety distance Ls to implement the radiography process, the X-ray module 11 and the image detection module 12 are closest to the bed 14, but never collide with the machine base 13 and the bed 14.
After step S16, the processing unit 10 further accesses the plurality of contrast modes 151 to be provided by the human-machine interface 16, and determines whether any one of the plurality of contrast modes has a specific contrast mode with a contrast distance less than the safe distance Ls (step S18). In step S18, the processing unit 10 is mainly configured to determine whether the first contrast distance of each contrast mode is smaller than the safety distance Ls, and determine whether the second contrast distance of each contrast mode is smaller than the safety distance Ls.
In this embodiment, the plurality of contrast modes 151 are stored in the storage unit 15, and each contrast mode 151 has a different contrast distance. The first contrast distance and the second contrast distance of each contrast mode 151 may be the same or different. When the radiography system 1 controls the X-ray module 11 and the image detection module 12 to perform the radiography process based on different radiography modes 151, images with different resolutions can be obtained. The different contrast modes 151 may correspond to different resolution magnifications, which are equal to the resolution of the image detection module 12 divided by the resolution of the field of view in the different contrast modes, and also equal to a relation between the first contrast distance (SOD) and the second contrast distance (OID). In this embodiment, the relationship may be the sum of the first contrast distance (SOD) and the second contrast distance (OID) divided by the first contrast distance (SOD).
If it is determined in step S18 that all the contrast distances of all the contrast modes 151 in the storage unit 15 are greater than or equal to the safety distance Ls (e.g., the first contrast distance is greater than or equal to the safety distance Ls, and the second contrast distance is also greater than or equal to the safety distance Ls), the processing unit 10 does not perform any processing on the plurality of contrast modes 151 in the storage unit 15.
On the contrary, if it is determined in step S18 that any one of the contrast distances of one or more contrast modes 151 is smaller than the safety distance Ls (e.g., the first contrast distance or the second contrast distance of a specific contrast mode is smaller than the safety distance Ls), the processing unit 10 disables the specific contrast mode (step S20). After step S18 or step S20, the processing unit 10 controls the human-machine interface 16 to display one or more contrast modes 151 that are not disabled (step S22). In other words, as long as one of the first contrast distance and the second contrast distance used by one contrast mode 151 is less than the safety distance Ls obtained by the processing unit 10, it means that this contrast mode is not suitable for the currently set size of the carrying bed 14, and therefore the processing unit 10 disables this unsuitable contrast mode 151.
In this embodiment, the particular contrast mode that was disabled in step S20 is not displayed or is darkened on the human machine interface 16. In another embodiment, the specific contrast mode disabled in step S20 is displayed on the human-machine interface 16, but cannot be selected by the user. Therefore, no matter which contrast mode 151 is selected by the user on the human-machine interface 16, the X-ray module 11 and the image detection module 12 will not collide with the bed 14 and the machine table 13 when the contrast system 1 is in operation.
Referring to fig. 4A and fig. 4B, fig. 4A is a schematic view of a carrying bed according to a first embodiment of the invention, and fig. 4B is a schematic view of a human-machine interface according to a first embodiment of the invention.
In the embodiment of fig. 4A, the radiography system 1 employs a first supporting bed 21, and the first supporting bed 21 is mounted on the machine 13 and electrically connected to the docking interface 131 on the machine 13 through a connection interface 211. In this embodiment, the machine platform 13 receives an identification signal for identifying the type of the first carrying bed 21 through the pin device on the connection interface 211 (for example, indicating that the first carrying bed 21 is a large carrying bed).
In the embodiment of fig. 4B, the contrast system 1 may default to at least four contrast modes 151, including a first mode, a second mode, a third mode, and a fourth mode. Wherein the resolution of the Field of View (FOV) of the first mode is 44.9 μm, the resolution of the Field of View (FOV) of the second mode is 22.5 μm, the resolution of the Field of View (FOV) of the third mode is 15 μm, and the resolution of the Field of View (FOV) of the fourth mode is 9 μm. The resolution of the field of view (FOV) refers to the size of each pixel (pixel) that can be generated by the image detection module 12 in the corresponding contrast mode 151, and the field of view is related to the contrast distance (e.g., the first contrast distance or the second contrast distance) used in each contrast mode 151.
For example, assuming that the resolution of the image detection module 12 is 75 μm, and the first mode is selected, the resolution magnification is about 1.6 times, and the ratio of (the first contrast distance (SOD) + the second contrast distance (OID)) divided by the first contrast distance (SOD) must be equal to 1.6. By the above relational expression, there are corresponding contrast distances (first contrast distance and second contrast distance) in each contrast mode.
In this embodiment, since the first carrying bed 21 (which is a large carrying bed) has a large size, and the contrast distances (the first contrast distance (SOD) and the second contrast distance (OID)) in the second mode, the third mode and the fourth mode are smaller than the safety distance Ls corresponding to the first carrying bed 21, after the first carrying bed 21 is mounted on the machine base 13, the processing unit 10 filters the plurality of contrast modes 151 of the contrast system 1 according to the safety distance Ls corresponding to the first carrying bed 21, and disables the second mode, the third mode and the fourth mode in which the contrast distances (the first contrast distance and the second contrast distance) are too small.
If the first support bed 21 is used in the imaging system 1, the user can only select the first mode on the human-machine interface 16, as shown in fig. 4B. Since the contrast distance (the first contrast distance (SOD) and the second contrast distance (OID)) adopted in the first mode is greater than the safety distance Ls corresponding to the first carrying bed 21, when the radiography system 1 controls the X-ray module 11 and the image detection module 12 to execute the radiography process based on the contrast distance in the first mode, it is ensured that the X-ray module 11 and the image detection module 12 never collide with the first carrying bed 21 and the machine table 13.
Please refer to fig. 5A and fig. 5B, wherein fig. 5A is a schematic diagram of a carrying bed according to a second embodiment of the present invention, and fig. 5B is a schematic diagram of a human-machine interface according to a second embodiment of the present invention.
In the embodiment of fig. 5A, the radiography system 1 employs the second supporting bed 22, and the second supporting bed 22 is electrically connected to the docking interface 131 of the machine table 13 through the connection interface 221. In this embodiment, the machine platform 13 identifies the type of the second carrying bed 22 (for example, a middle-sized carrying bed) through the pin position element arrangement on the connection interface 221.
As shown in fig. 5B, the size of the second carrying bed 22 (which is a medium carrying bed) is smaller than that of the first carrying bed 21, and only the contrast distances (the first contrast distance and the second contrast distance) in the third mode and the fourth mode are smaller than the safety distance Ls corresponding to the second carrying bed 22. Therefore, after the second carrying bed 22 is installed on the machine table 13, the processing unit 10 disables the third mode and the fourth mode in which the contrast distances (the first contrast distance (SOD) and the second contrast distance (OID)) are too small according to the safety distance Ls corresponding to the second carrying bed 22.
If the second support bed 22 is used in the imaging system 1, the user can select only the first mode or the second mode on the human-machine interface 16, as shown in fig. 5B. Since the contrast distances (the first contrast distance (SOD) and the second contrast distance (OID)) adopted in the first mode and the second mode are both greater than the safety distance Ls corresponding to the second carrying bed 22, when the radiography system 1 controls the X-ray module 11 and the image detection module 12 to perform the radiography process based on the contrast distances in the first mode or the second mode, it is ensured that the X-ray module 11 and the image detection module 12 never collide with the second carrying bed 22 and the machine table 13.
Please refer to fig. 6A and fig. 6B, wherein fig. 6A is a schematic diagram of a carrying bed according to a third embodiment of the present invention, and fig. 6B is a schematic diagram of a human-machine interface according to a third embodiment of the present invention.
In the embodiment of fig. 6A, the radiography system 1 employs a third supporting bed 23, and the third supporting bed 23 is electrically connected to the docking interface 131 of the machine table 13 through a connection interface 231. In this embodiment, the machine platform 13 identifies the type of the third carrying bed 23 (for example, a small carrying bed) through the foot position element arrangement on the connection interface 231.
As shown in fig. 6B, the size of the third carrying bed 23 (which is a small carrying bed) is smaller than the first carrying bed 21 and the second carrying bed 22, and the contrast distances (the first contrast distance (SOD) and the second contrast distance (OID)) of all the contrast modes in the storage unit 15 are greater than or equal to the safety distance Ls corresponding to the third carrying bed 23. Therefore, after the third loading bed 23 is installed on the machine table 13, the processing unit 10 does not disable any one of the contrast modes (or, the processing unit 10 enables all the contrast modes in the storage unit 15).
As shown in fig. 6B, if the third support bed 23 is used in the imaging system 1, the user can select all the imaging modes supported by the imaging system 1 on the human-machine interface 16, and no matter which imaging distance of the imaging mode the X-ray module 11 and the image detection module 12 perform the imaging procedure based on, no collision occurs between the third support bed 23 and the machine table 13.
It should be noted that if the X-ray module 11 and the image detection module 12 perform the contrast process based on the fourth mode, the contrast speed is slower, but the resolution of the generated image is higher. If the X-ray module 11 and the image detection module 12 perform the contrast process based on the first mode, the contrast speed is faster, but the resolution of the generated image is lower. Therefore, the user can select an appropriate contrast mode 151 on the human-machine interface 16 according to actual needs, and there is no need to worry about the problem that the X-ray module 11/image detection module 12 collides with the bed 14 or the machine table 13.
In this embodiment, the load-bearing bed types include at least a large load-bearing bed (e.g. the first load-bearing bed 21), a medium load-bearing bed (e.g. the second load-bearing bed 22) and a small load-bearing bed (e.g. the third load-bearing bed 23), wherein the safety distance Ls of the large load-bearing bed is greater than the safety distance Ls of the medium load-bearing bed, and the safety distance Ls of the medium load-bearing bed is greater than the safety distance Ls of the small load-bearing bed. The processing unit 10, upon recognizing that the currently installed patient support 14 is a small patient support, enables all of the contrast modes 151 that the imaging system 1 can support. In other words, the minimum size of the carrying bed 14 that can be used by the contrast system 1 should be suitable for all the contrast modes 151 stored in the storage unit 15 (i.e. the safety distance Ls corresponding to the minimum size of the carrying bed 14 should be smaller than the first contrast distance and the second contrast distance of all the contrast modes 151).
Referring to fig. 7, a first embodiment of the radiography flowchart of the present invention is shown. Fig. 7 is a diagram illustrating in detail the steps performed by the contrast system 1 according to the present invention when the user selects any of the non-disabled contrast modes 151.
As shown in fig. 7, after a carrying bed 14 is installed and the human-machine interface 16 displays one or more non-disabled contrast modes 151, the contrast system 1 may receive an external operation from a user through the human-machine interface 16 and select one of the non-disabled contrast modes 151 according to the content of the external operation (step S30).
After the user selects any one of the contrast modes 151, the processing unit 10 obtains a contrast distance of the selected contrast mode 151 (step S32), and adjusts a working distance Lw of the X-ray module 11 and the image detection module 12 with respect to the bed 14 according to the contrast distance (step S34).
Specifically, in step S34, the processing unit 10 adjusts the positions (e.g., the positions on the motor axis) of the X-ray module 11 and the image detection module 12 according to the acquired contrast distance, such that the adjusted first working distance L01 between the X-ray module 11 and the bed 14 is equal to the first contrast distance of the selected contrast mode 151, and the second working distance L02 between the image detection module 12 and the bed 14 is equal to the second contrast distance of the selected contrast mode 151. The adjusted first working distance L01 and the adjusted second working distance L02 are respectively greater than or equal to the safety distance Ls corresponding to the loading bed 14.
After the step S34, the processing unit 10 may further control the X-ray module 11 and the image detection module 12 to enable the X-ray module 11 and the image detection module 12 to execute the radiography process based on the adjusted working distance Lw (including the adjusted first working distance L01 and the adjusted second working distance L02) (step S36). In the contrast procedure, the X-ray module 11 and the image detection module 12 mainly rotate around the carrying bed 14 or the machine table 13 in a clockwise direction or a counterclockwise direction, and emit and detect X-rays, thereby generating corresponding images.
Referring to fig. 8, a second embodiment of the contrast system of the present invention is shown. As shown in fig. 8, when the radiography system 1 is just started or enters the standby mode, an initial working distance Lw is provided between the X-ray module 11 and the image detection module 12. Specifically, when the radiography system 1 is just started, the X-ray module 11 is separated from the supporting bed 14 (or the table 13) by an initial first working distance L11, and the supporting bed 14 (or the table 13) is separated by an initial second working distance L12.
When a carrying bed 14 is installed on the machine table 13, the processing unit 10 can obtain a safety distance Ls corresponding to the carrying bed 14. Next, the processing unit 10 executes a filtering procedure to display all contrast modes 151 on the human-machine interface 16 that are eligible (i.e. the first contrast distance is greater than or equal to the safe distance Ls, while the second contrast distance is also greater than or equal to the safe distance Ls).
When the user selects any one of the contrast modes 151 on the human-computer interface 16, the processing unit 10 adjusts the positions of the X-ray module 11 and the image detection module 12 according to the contrast distance of the selected contrast mode 151, so that an adjusted working distance Lw is provided between the X-ray module 11 and the image detection module 12.
Specifically, the contrast distance of the contrast mode 151 may be a first contrast distance between the X-ray module 11 and the carrying bed 14 or a second contrast distance between the carrying bed 14 and the image detection module 12, the processing unit 10 mainly adjusts the position of the X-ray module 11 according to the first contrast distance of the selected contrast mode 151, so that the X-ray module 11 and the carrying bed 14 are separated by an adjusted first working distance L21, and the processing unit 10 adjusts the position of the image detection module 12 according to the second contrast distance of the selected contrast mode 151, so that the carrying bed 14 and the image detection module 12 are separated by an adjusted second working distance L22. And the first contrast distance (i.e., the adjusted first working distance L21) of the selected contrast mode 151 must be greater than or equal to the safety distance Ls, and the second contrast distance (i.e., the adjusted second working distance L22) must also be greater than or equal to the safety distance Ls.
The contrast process is performed based on the adjusted working distance (including the adjusted first working distance L21 and the adjusted second working distance L22), and the image finally generated by the image detection module 12 may have the resolution corresponding to the contrast mode 151 selected by the user.
By the radiography system and the anti-collision method, a user cannot select the radiography mode with improper distance or resolution during operation, so that the situation that the X-ray module or the image detection module collides with the carrying bed can be effectively avoided, and the system and the method are quite convenient for the user.
The above description is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention, and any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, but such changes and modifications should be included in the scope of the appended claims.
Claims (12)
1. An imaging system with a load bed collision avoidance mechanism, comprising:
a machine table;
the bearing bed is detachably arranged on the machine table;
the X-ray module is arranged on one side of the machine table and is separated from the bearing bed by a first working distance;
the image detection module is arranged on the other side of the machine platform, which is opposite to the X-ray module, and is separated from the bearing bed by a second working distance;
the processing unit is electrically connected with the machine table, the X-ray module and the image detection module and identifies a bearing bed type of the bearing bed through the machine table; and
a human-computer interface for providing a plurality of contrast modes, wherein the contrast modes respectively correspond to different contrast distances, and the contrast distance is a first contrast distance of the X-ray module relative to the carrying bed or a second contrast distance of the carrying bed relative to the image detection module;
the processing unit determines a safety distance between the X-ray module and the image detection module relative to the support bed according to the type of the support bed, and disables a specific contrast mode when the first contrast distance or the second contrast distance of the specific contrast mode is smaller than the safety distance.
2. The radiography system with a crash-proof mechanism of a carrier bed as claimed in claim 1, wherein when the processing unit controls the X-ray module and the image detection module to perform an radiography process, the first working distance and the second working distance are respectively adjusted to the safe distance, which is the distance at which the X-ray module and the image detection module are closest to but do not collide with the carrier bed.
3. The radiography system with a crash-proof mechanism of a carrier bed as claimed in claim 1, wherein the machine has a docking interface, the carrier bed has a connection interface, the machine is electrically connected to the carrier bed through the docking interface and the connection interface, the processing unit receives an identification signal of the carrier bed through the docking interface and the connection interface, and identifies the type of the carrier bed according to the content of the identification signal.
4. The imaging system with a carrier bed collision avoidance mechanism of claim 1, wherein the human machine interface accepts an external operation to select one of the one or more imaging modes that is not disabled, the processing unit adjusts the first working distance of the X-ray module relative to the carrier bed according to the first imaging distance of the selected imaging mode, adjusts the second working distance of the image detection module relative to the carrier bed according to the second imaging distance of the selected imaging mode, and controls the X-ray and the image detection module to perform an imaging procedure based on the adjusted first working distance and the adjusted second working distance, wherein the adjusted first working distance is equal to the first imaging distance, and the adjusted second working distance is equal to the second imaging distance.
5. The radiography system with a crash-proof mechanism of claim 1, wherein the types of the carrying bed include a large carrying bed, a medium carrying bed and a small carrying bed, the safety distance of the large carrying bed is greater than the safety distance of the medium carrying bed, the safety distance of the medium carrying bed is greater than the safety distance of the small carrying bed, and the processing unit enables all the radiography modes when the carrying bed is identified as the small carrying bed.
6. The contrast system with a bed collision avoidance mechanism of claim 1, wherein the processing unit corresponds to a plurality of resolution magnifications according to the contrast mode, the resolution magnifications being respectively equal to a relationship between the first contrast distance and the second contrast distance of the contrast mode.
7. An anti-collision method of an imaging system is applied to the imaging system, the imaging system comprises a machine table, a bearing bed detachably arranged on the machine table, an X-ray module arranged on one side of the machine table and separated from the bearing bed by a first working distance, an image detection module arranged on the other side of the machine table opposite to the X-ray module and separated from the bearing bed by a second working distance, a processing unit and a man-machine interface, the anti-collision method comprises the following steps:
a) when the bearing bed is arranged on the machine table, the processing unit identifies a bearing bed type of the bearing bed through the machine table;
b) the processing unit determines a safe distance between the X-ray module and the image detection module relative to the carrying bed according to the type of the carrying bed;
c) the processing unit accesses a plurality of contrast modes provided by the human-computer interface, wherein the contrast modes respectively correspond to different contrast distances, and the contrast distance is a first contrast distance of the bearing bed relative to the X-ray module or a second contrast distance of the bearing bed relative to the image detection module;
d) the processing unit judges whether a specific contrast mode with the first contrast distance or the second contrast distance smaller than the safe distance exists in the plurality of contrast modes;
e) disabling, by the processing unit, the particular contrast mode when the particular contrast mode is present among the plurality of contrast modes; and
f) and controlling the man-machine interface to display one or more of the contrast modes which are not disabled by the processing unit.
8. The collision avoidance method of claim 7, wherein when the processing unit controls the X-ray module and the image detection module to perform a radiography process, the first working distance and the second working distance are respectively adjusted to the safe distance, which is the distance at which the X-ray module and the image detection module are closest to but do not collide with the bed.
9. The anti-collision method of the radiography system according to claim 7, wherein the machine has a docking interface, the carrying bed has a connection interface, and the machine is electrically connected to the carrying bed through the docking interface and the connection interface; in the step a), the processing unit receives an identification signal of the carrying bed through the docking interface and the connection interface, and identifies the type of the carrying bed according to the content of the identification signal.
10. The method of claim 7, further comprising the steps of:
g) the man-machine interface receives an external operation to select one of the one or more contrast modes which are not disabled;
h) the processing unit obtains the first contrast distance and the second contrast distance of the selected contrast mode;
i) the processing unit adjusts the first working distance of the X-ray module relative to the carrying bed according to the first contrast distance, and adjusts the second working distance of the image detection module relative to the carrying bed according to the second contrast distance, so that the adjusted first working distance is equal to the first contrast distance, and the adjusted second working distance is equal to the second contrast distance; and
j) the processing unit controls the X-ray module and the image detection module to execute an angiography program based on the adjusted first working distance and the adjusted second working distance.
11. The collision avoidance method for radiography system according to claim 7, wherein the carrying bed types include at least a large carrying bed, a medium carrying bed and a small carrying bed, the safety distance of the large carrying bed is greater than the safety distance of the medium carrying bed, the safety distance of the medium carrying bed is greater than the safety distance of the small carrying bed, and the processing unit enables all the radiography modes when the carrying bed is identified as the small carrying bed.
12. The collision avoidance method for an imaging system according to claim 7, wherein the imaging modes correspond to different resolutions and magnifications respectively equal to a relationship between the first and second imaging distances of the imaging modes.
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| CN110755105B (en) | 2023-12-08 |
| CN110755105A (en) | 2020-02-07 |
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| CN110772273B (en) | 2023-10-17 |
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