CN1742679A - Method for defining scan-direction of computer tomography - Google Patents
Method for defining scan-direction of computer tomography Download PDFInfo
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- CN1742679A CN1742679A CN 200410075374 CN200410075374A CN1742679A CN 1742679 A CN1742679 A CN 1742679A CN 200410075374 CN200410075374 CN 200410075374 CN 200410075374 A CN200410075374 A CN 200410075374A CN 1742679 A CN1742679 A CN 1742679A
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Abstract
The method for defining scanning direction for computer tomographic image formation includes the following steps: after the patient is fixed on the examining table, the operator can input the patient's position parameter into patient's condition window interface, said position can be head-first or foot-first, then the operator can define the examining table moving direction which can be moving-in or moving-out from examing table moving direction operation interface, and can calculate and define scanning direction according to patient's position and moving direction of examining table.
Description
(1) technical field
The present invention relates to a kind of method of definite scanning direction, more particularly, relate to a kind of method of determining patient is carried out the scanning direction of computer tomography for the operator.
(2) background technology
Computer tomography (Computed Tomography) claim computer tomography again, is called for short CT.CT is different from traditional X line imaging, it is with the X wire harness successively transverse scan to be carried out at a certain position of human body, the section information of obtaining some more as calculated machine handle the back and obtain the image rebuild, the image of this reconstruction is the cross-section internal anatomy of human body, again by also obtaining three-dimensional reconstructed image after the Computer Processing.
On external structure, CT mainly comprises frame (Gantry), examinating couch (Patient Table), computer system (Computer).Frame mainly comprises high tension generator (Generator), bulb (Tube), detector (Detector) and data collecting system (DataAcquisition System).The high pressure that high tension generator produces uses for bulb, and bulb and detector then are installed in the both sides that are scanned tissue respectively, and direction is relative.Bulb generates X ray, and detector receives the projection of X ray behind human body.Because the various tissues of human body (comprising normal and abnormal structure) do not wait the absorption of X line, CT then utilizes this characteristic, and a certain selected aspect of human body is divided into the identical cube fritter of many volumes, and these cube fritters are called voxel (Voxel).CT utilizes the X wire harness the certain thickness aspect in human body a part to be scanned the projection (projection) that obtains different angles, and utilization convolution backprojection algorithm (Convoluted Backprojection, also cry filtered back projection, Filtered Backprojection) rebuild the cross-sectional image that (Reconstruction) goes out this position tissue.(unit is Hu to each point on the image, represents that HounsfieldUnit) corresponding to the attenuation quotient of different tissues, each point is the ultimate unit on the CT image, is called pixel (Pixel) with the CT value.All pixels row square formation that is arranged in rows on the piece image forms image array, promptly constitutes the CT image.
Examinating couch is to make patient by certain position stationary device.The orientation (be called " patient orientation ") of patient on examinating couch has two kinds, and a kind of is the close frame of head, is called " head earlier ", another is the close frame of foot, is called " foot earlier ", and its implication can be referring to Fig. 1, Fig. 1 (a) is " head earlier ", and Fig. 1 (b) is " foot earlier ".Examinating couch can move by along continuous straight runs, if examinating couch moves towards the direction near frame, is called " shift-in ", moves towards the direction away from frame, is called " shifting out ".
The patient of foot scanning, foot is near frame, this moment, correct scanning direction should be from foot to the end, but because the operator obscures the moving direction of scanning direction and examinating couch mutually, the shift-in of thinking examinating couch by mistake is exactly from the beginning arrive foot, owing to wanting to allow patient's foot shift-in, from the beginning the scanning direction of selecting for arriving foot, the result who causes like this is shifting out of examinating couch, makes patient's moving direction make a mistake, and therefore can make patient accept roentgen radiation x one time more.
(3) summary of the invention
The object of the present invention is to provide a kind of method of scanning direction of definite computer tomography, make the operator can judge the scanning direction of CT exactly, avoided making patient be subjected to unnecessary roentgen radiation x because of the mobile mistake of examinating couch with normal order.
For achieving the above object, the present invention is achieved through the following technical solutions: a kind of method of scanning direction of definite computer tomography comprises following steps:
(1) computer system ejects the patient window interface, will be input to respect to patient's direction parameter of scanning gantry in the above-mentioned interface for the operator, and patient's direction parameter is input as " head earlier " or " foot earlier "; Then,
(2) aforementioned calculation machine system provides examinating couch moving direction operation interface, and selecting the examinating couch moving direction for the operator is " shift-in " or " shifting out ";
(3) according to step (1) and (2) definite patient's direction parameter and examinating couch moving direction, computer system calculates the scanning direction according to following rule: if above-mentioned parameter " head earlier " and " shift-in " combination, then above-mentioned scanning direction is " from the beginning arriving sufficient "; Perhaps, if above-mentioned parameter " head earlier " and " shifting out " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shift-in " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shifting out " combination, then above-mentioned scanning direction is " from the beginning arriving foot ".
According to an aspect of the present invention, in above-mentioned steps (2), show the patient orientation and the examinating couch moving direction key of input on the display screen at aforesaid operations interface.
According to another aspect of the present invention, above-mentioned examinating couch moving direction key is a button.Above-mentioned button is two.
According to a further aspect of the invention, above-mentioned examinating couch moving direction key is to key in frame.
The patient of foot scanning, foot is near frame, this moment, correct scanning direction should be from foot to the end, but because the operator obscures the moving direction of scanning direction and examinating couch mutually, the shift-in of thinking examinating couch by mistake is exactly from the beginning arrive foot, owing to wanting to allow patient's foot shift-in, from the beginning the scanning direction of selecting for arriving foot, the result who causes like this is shifting out of examinating couch, makes patient's moving direction make a mistake, and therefore can make patient accept roentgen radiation x one time more.
(3) summary of the invention
The object of the present invention is to provide a kind of method of scanning direction of definite computer tomography, make the operator can judge the scanning direction of CT exactly, avoided making patient be subjected to unnecessary roentgen radiation x because of the mobile mistake of examinating couch with normal order.
For achieving the above object, the present invention is achieved through the following technical solutions: a kind of method of scanning direction of definite computer tomography comprises following steps:
(1) computer system ejects the patient window interface, will be input to respect to patient's direction parameter of scanning gantry in the above-mentioned interface for the operator, and patient's direction parameter is input as " head earlier " or " foot earlier "; Then,
(2) aforementioned calculation machine system provides examinating couch moving direction operation interface, and selecting the examinating couch moving direction for the operator is " shift-in " or " shifting out ";
(3) according to step (1) and (2) definite patient's direction parameter and examinating couch moving direction, computer system calculates the scanning direction according to following rule: if above-mentioned parameter " head earlier " and " shift-in " combination, then above-mentioned scanning direction is " from the beginning arriving sufficient "; Perhaps, if above-mentioned parameter " head earlier " and " shifting out " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shift-in " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shifting out " combination, then above-mentioned scanning direction is " from the beginning arriving foot ".
According to an aspect of the present invention, in above-mentioned steps (2), show the patient orientation and the examinating couch moving direction key of input on the display screen at aforesaid operations interface.
According to another aspect of the present invention, above-mentioned examinating couch moving direction key is a button.Above-mentioned button is two.
According to a further aspect of the invention, above-mentioned examinating couch moving direction key is to key in frame.
According to a further aspect of the invention, above-mentioned examinating couch moving direction key is a drop-down menu.
By such scheme as can be seen, key of the present invention is: increased the selection of examinating couch moving direction in the image that shows on computer screen, made the operator to obtain the scanning direction according to normal logic.
The method of the scanning direction of definite computer tomography provided by the present invention has the following advantages:
(a) among the present invention, introduced the examinating couch moving direction, the operator only needs to import these two of patient orientation and examinating couch moving directions parameter simply and intuitively, and computer will draw the scanning direction of CT to patient, and the operator need not to carry out the judgement of scanning direction.Concerning patient, increased safety guarantee, can multiple scanning because of the scanning direction mistake, thereby reduced the danger of bearing reirradiation.
(b) because the present invention meets people's intuitive thinking, when the operator need change the examinating couch moving direction at every turn, the scanning direction that will make new advances need not to judge on the problem of scanning direction again, makes the operator reduce greatly because of judging the probability that makes a mistake in the scanning direction.Therefore can the save operation time, improve operating efficiency.
(c) (promptly determined the patient orientation) after patient lies on the examinating couch, only need select " examinating couch moving direction " parameter just can determine the scanning direction again, do not needed to change any other existing operation, therefore simple to operate, the operator is convenient to grasp.
(d) the present invention only needs to add " examinating couch moving direction " parameter in the operation interface of prior art, carries out a spot of modification again in software and get final product, and software function very easily realizes.
(4) description of drawings
Fig. 1 is the scanning direction key diagram, and from the beginning the scanning direction of Fig. 1 (a) for arriving foot, and the scanning direction of Fig. 1 (b) is from foot to the end.
Fig. 2 is a patient orientation key diagram, and the patient orientation of Fig. 2 (a) is a head elder generation, and the patient orientation of Fig. 2 (b) is a foot elder generation.
Fig. 3 determines the embodiment of the scanning direction of computer tomography for adopting method of the present invention, wherein:
Fig. 3 (a) patient orientation is " head earlier ", and the examinating couch moving direction is " shift-in "; The scanning direction is " from the beginning arriving foot ";
Fig. 3 (b) patient orientation is " head earlier ", and the examinating couch moving direction is " shifting out "; The scanning direction is " from foot to the end ";
Fig. 3 (c) patient orientation is " foot earlier ", and the examinating couch moving direction is " shift-in "; The scanning direction is " from foot to the end ";
Fig. 3 (d) patient orientation is " foot earlier ", and the examinating couch moving direction is " shifting out ", and the scanning direction is " from the beginning arriving foot ".
(5) specific embodiment
Describe the present invention below in conjunction with accompanying drawing.
Patient at first gives the CT examination request slip CT operator (being CT operator) or the position that will scan and informs the CT operator, makes the CT operator can learn the patient orientation that will scan in advance: head elder generation or foot are earlier.The operator informs that patient is fixed on the examinating couch in the scanning room with certain position then, the CT operator that be arranged in the control room this moment operates computer system, make this system eject the patient window interface, to be input to respect to patient's direction parameter of scanning gantry in the above-mentioned interface for the operator, patient's direction parameter is input as above-mentioned " head earlier " or " foot earlier ", then by " determining " key.
Aforementioned calculation machine system ejects examinating couch moving direction operation interface, selecting the examinating couch moving direction for the operator is " shift-in " or " shifting out ", selective key is generally the button of two arrowhead forms on the operation interface, and the direction of arrow is represented the moving direction of examinating couch.
Press above-mentioned button, promptly selected the moving direction of examinating couch, then computer system is according to the patient's direction parameter of input and the examinating couch moving direction of operator's selection, calculate the scanning direction according to following rule: if above-mentioned parameter " head earlier " and " shift-in " combination, then above-mentioned scanning direction is " from the beginning arriving foot "; Perhaps, if above-mentioned parameter " head earlier " and " shifting out " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shift-in " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shifting out " combination, then above-mentioned scanning direction is " from the beginning arriving foot ".
Key selective on the operation interface can also be to key in frame except button, input " shift-in " or " shifting out " in keying in frame; This selective key can also be a drop-down menu in addition, selects in drop-down menu " shift-in " or " shifting out ".
If the position that patient will check is a head, examinating couch patient orientation should be head earlier as can be known, if the scan start point of frame is at the head top at this moment, then should on the computer interface that shows, select the shift-in of examinating couch, shown in Fig. 3 (a) arrow, computer interface can be notified and inform that from the beginning the scanning direction for arriving foot this moment.
If the position that patient will check is a head, examinating couch patient orientation should be head earlier as can be known, if the scan start point of frame at head bottom at this moment, then should on the computer interface that shows, select shifting out of examinating couch, shown in Fig. 3 (b) arrow, computer interface can be notified and inform that the scanning direction is from foot to the end this moment.
If the position that patient will check is a foot, examinating couch patient orientation should be sufficient elder generation as can be known, if the scan start point of frame is at the foot lowermost end at this moment, then should on the computer interface that shows, select the shift-in of examinating couch, shown in Fig. 3 (c) arrow, computer interface can be notified and inform that the scanning direction is from foot to the end this moment.
If the position that patient will check is a foot, examinating couch patient orientation should be sufficient elder generation as can be known, if the scan start point of frame is at the carpus position at this moment, then should on the computer interface that shows, select shifting out of examinating couch, shown in Fig. 3 (d) arrow, computer interface can be notified and inform that from the beginning the scanning direction for arriving foot this moment.
If the position that patient will check is an abdominal part, examinating couch patient orientation can be head elder generation, if the scan start point of frame is in the abdominal part upper end at this moment, then should on the computer interface that shows, select the shift-in of examinating couch, shown in Fig. 3 (a) arrow, computer interface can be notified and inform that from the beginning the scanning direction for arriving foot this moment.
If the position that patient will check is an abdominal part, examinating couch patient orientation can be head elder generation, if the scan start point of frame is in the abdominal part lower end at this moment, then should on the computer interface that shows, select shifting out of examinating couch, shown in Fig. 3 (b) arrow, computer interface can be notified and inform that the scanning direction is from foot to the end this moment.
If the position that patient will check is an abdominal part, examinating couch patient orientation can be sufficient elder generation, if the scan start point of frame is in the abdominal part upper end at this moment, then should on the computer interface that shows, select shifting out of examinating couch, shown in Fig. 3 (d) arrow, computer interface can be notified and inform that from the beginning the scanning direction for arriving foot this moment.
If the position that patient will check is an abdominal part, examinating couch patient orientation can be sufficient elder generation, if the scan start point of frame is in the abdominal part lower end at this moment, then should on the computer interface that shows, select the shift-in of examinating couch, shown in Fig. 3 (c) arrow, computer interface can be notified and inform that the scanning direction is from foot to the end this moment.
By the foregoing description as can be seen, because the present invention's selection that has increased the examinating couch moving direction on computer screen in the image that mode shows intuitively, make that the operator is easy to obtain the scanning direction and need not to judge again according to normal logic on the problem of scanning direction, making operator's manipulation check bed move wrong probability reduces greatly, reduced the unnecessary roentgen radiation x that multiple scanning caused, further improved the safety of CT examination, and saved the operating time, improved operating efficiency.
Claims (6)
1. the method for the scanning direction of a definite computer tomography is characterized in that comprising following steps:
(1) computer system ejects the patient window interface, will be input to respect to patient's direction parameter of scanning gantry in the above-mentioned interface for the operator, and patient's direction parameter is input as " head earlier " or " foot earlier "; Then,
(2) aforementioned calculation machine system provides examinating couch moving direction operation interface, and selecting the examinating couch moving direction for the operator is " shift-in " or " shifting out ";
(3) according to step (1) and (2) definite patient's direction parameter and examinating couch moving direction, computer system calculates the scanning direction according to following rule: if above-mentioned parameter " head earlier " and " shift-in " combination, then above-mentioned scanning direction is " from the beginning arriving sufficient "; Perhaps, if above-mentioned parameter " head earlier " and " shifting out " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shift-in " combination, then above-mentioned scanning direction is " from foot to the end "; Perhaps, if above-mentioned parameter " foot earlier " and " shifting out " combination, then above-mentioned scanning direction is " from the beginning arriving foot ".
2. the method for claim 1 is characterized in that, in above-mentioned steps (2), shows the patient orientation and the examinating couch moving direction key of input on the display screen at aforesaid operations interface.
3. method as claimed in claim 2 is characterized in that, above-mentioned examinating couch moving direction key is a button.
4. method as claimed in claim 3 is characterized in that, above-mentioned button is two.
5. method as claimed in claim 2 is characterized in that, above-mentioned examinating couch moving direction key is to key in frame.
6. method as claimed in claim 2 is characterized in that, above-mentioned examinating couch moving direction key is a drop-down menu.
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| CN 200410075374 CN1742679A (en) | 2004-08-31 | 2004-08-31 | Method for defining scan-direction of computer tomography |
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| CN 200410075374 CN1742679A (en) | 2004-08-31 | 2004-08-31 | Method for defining scan-direction of computer tomography |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018227449A1 (en) * | 2017-06-15 | 2018-12-20 | Shanghai United Imaging Healthcare Co., Ltd. | Imaging systems and methods thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018227449A1 (en) * | 2017-06-15 | 2018-12-20 | Shanghai United Imaging Healthcare Co., Ltd. | Imaging systems and methods thereof |
| US10856832B2 (en) | 2017-06-15 | 2020-12-08 | Shanghai United Imaging Healthcare Co., Ltd. | Imaging systems and methods thereof |
| US11564653B2 (en) | 2017-06-15 | 2023-01-31 | Shanghai United Imaging Healthcare Co., Ltd. | Imaging systems and methods thereof |
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Effective date of registration: 20080411 Address after: Zhou Hao road 278, Shanghai, Nanhui, China Code: 201318 Applicant after: Siemens Shanghai Medical Equipment Co., Ltd. Address before: 7, South Central Road, Chaoyang District, Beijing, Wangjing, China: 100102 Applicant before: SIEMENS (China) Co., Ltd. |
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