CN211584937U - Radiation field verification device and radiotherapy system - Google Patents
Radiation field verification device and radiotherapy system Download PDFInfo
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- CN211584937U CN211584937U CN201921741370.5U CN201921741370U CN211584937U CN 211584937 U CN211584937 U CN 211584937U CN 201921741370 U CN201921741370 U CN 201921741370U CN 211584937 U CN211584937 U CN 211584937U
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- 238000012795 verification Methods 0.000 title claims abstract description 170
- 230000005855 radiation Effects 0.000 title claims abstract description 57
- 238000001959 radiotherapy Methods 0.000 title claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 claims abstract description 121
- 239000002184 metal Substances 0.000 claims abstract description 121
- 238000003384 imaging method Methods 0.000 claims abstract description 50
- 229910000978 Pb alloy Inorganic materials 0.000 claims description 4
- 229910001080 W alloy Inorganic materials 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
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Abstract
The application discloses a radiation field verifying device and a radiotherapy system, and belongs to the field of radiotherapy. The first surface of the main body of the field verification device is provided with two calibration lines, and the second surface is provided with a verification assembly comprising a verification metal wire. The two calibration lines can align the radiation field verification device with the isocenter of the radiotherapy equipment, so that the imaging of the verification assembly on the imaging assembly can be ensured to indicate the expected radiation field. The verification personnel can directly verify whether the position of the radiation field of the beam is accurate or not by comparing the actual radiation field imaging on the imaging assembly with the imaging deviation of the verification assembly, and the radiation field verification device has higher accuracy in radiation field verification.
Description
Technical Field
The application relates to the field of radiotherapy, in particular to a radiation field verification device and a radiotherapy system.
Background
The radiation field (i.e., radiation field) of the radiotherapy device refers to the projection of the beam onto the isocenter plane of the radiotherapy device, the contour of which represents the radiation range. During radiotherapy, if the actual radiation range does not coincide with the desired radiation range, the beam of the radiotherapy apparatus may not be able to accurately irradiate the target region, even to the normal tissue, causing damage to the normal tissue. For this reason, the radiation field of the radiotherapy apparatus needs to be verified before radiotherapy.
In the related art, the light field is generally indicated by the light field generated by the light field indicator, and whether the position of the light field is accurate or not can be verified according to the position of the light field.
However, for the radiotherapy equipment with the roller as the rack, the light field formed by the light field indicator is positioned inside the roller, so that the verification personnel can hardly accurately check the light field, and the accuracy of the radiation field verification is affected.
SUMMERY OF THE UTILITY MODEL
The application provides a radiation field verification device and a radiotherapy system, and can solve the problem of low verification accuracy when a light field indicator is adopted for radiation field verification in the related art. The technical scheme is as follows:
in one aspect, a portal verification device is provided, which includes:
the main body is provided with a first surface and a second surface which are opposite, and the first surface is provided with two perpendicularly crossed calibration lines;
the verification components are arranged on the second surface and each verification component comprises one or more verification metal lines, and the orthographic projection of the central point of a graph defined by the one or more verification metal lines on the first surface is coincided with the intersection point of the two calibration lines.
Optionally, the portal verification apparatus further includes: a first reference metal line and a second reference metal line disposed on the second face;
the first reference metal line and the second reference metal line intersect perpendicularly, and an intersection of the first reference metal line and the second reference metal line coincides with the center point.
Optionally, each of the verification components includes four of the verification metal lines;
wherein two of the verify metal lines are perpendicular to the first reference metal line and two other of the verify metal lines are perpendicular to the second reference metal line.
Optionally, an orthographic projection of the first reference metal line on the first surface coincides with one of the calibration lines, and an orthographic projection of the second reference metal line on the first surface coincides with the other of the calibration lines.
Optionally, a groove is further disposed on the second surface, and each of the verification metal line, the first reference metal line, and the second reference metal line is disposed in the groove.
Optionally, one or more card slot groups are further disposed on the second surface; each of the card slot sets includes: and the two clamping grooves are symmetrically arranged along the central point and are used for clamping the film.
Optionally, two card slot groups are arranged on the second surface, and two card slots included in each card slot group are in a strip shape and are parallel to each other; two card slots included in one card slot group are perpendicular to a first reference metal wire on the second surface, and two card slots included in the other card slot group are perpendicular to a second reference metal wire on the second surface.
Optionally, the first surface and the second surface are both cross-shaped; the center point of the figure coincides with the center point of the second face.
Optionally, four scale line groups are further arranged on the first surface, two of the scale line groups correspond to one calibration line, and the other two of the scale line groups correspond to the other calibration line;
each scale line group comprises a plurality of scale lines which are arranged along the extending direction of the corresponding calibration line by taking the intersection point of the two calibration lines as the original point, and the arrangement directions of the two scale line groups corresponding to the same calibration line are opposite.
Optionally, each of the scale line groups comprises a plurality of discontinuous sub-scale line groups; the number of the sub-scale line groups included in each scale line group is the same, and the scale range is the same.
Optionally, on the first surface, a scale is further disposed in an area where each sub-scale line group is located.
Optionally, the main body is made of aluminum, aluminum alloy or hard plastic; the verification metal line, the first reference metal line and the second reference metal line are made of tungsten alloy or lead alloy.
In another aspect, a radiation therapy system is provided, comprising: a radiotherapy apparatus, a treatment couch and a portal verification device as described in the preceding aspects;
wherein the radiation field verification device is arranged on the treatment couch, and the second surface of the main body of the radiation field verification device faces the treatment couch.
Optionally, the rack of the radiotherapy device is a roller; the radiation therapy system further comprises: and the camera device is arranged in the roller.
Optionally, the system further includes: an imaging assembly; the Imaging assembly is a film or an Electronic Portal Imaging Device (EPID).
The beneficial effect that technical scheme that this application provided brought can include:
the embodiment of the application provides a radiation field verification device and a radiotherapy system. Wherein the two calibration lines can align the portal verification device with the isocenter of the radiation treatment apparatus, thereby ensuring that imaging of the verification assembly on an imaging assembly (e.g., film or EPID) can indicate the desired portal. The verification personnel can directly verify whether the position of the radiation field of the beam is accurate or not by comparing the actual radiation field imaging on the imaging assembly with the imaging deviation of the verification assembly, and the radiation field verification device has higher accuracy in radiation field verification.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a portal verification device according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a second side of a body according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a radiation therapy system provided by an embodiment of the present application;
FIG. 4 is a schematic view of a second side of another body provided by an embodiment of the present application;
fig. 5 is a schematic structural diagram of another portal verification device provided in the embodiment of the present application;
FIG. 6 is a cross-sectional view of a body provided in accordance with an embodiment of the present application;
fig. 7 is a schematic structural diagram of a main body with a film fixed to a second side thereof according to an embodiment of the present application;
FIG. 8 is a schematic view of a first side of a body provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of another radiation therapy system provided in the embodiments of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a radiation field verifying device, which can be used for verifying the radiation field of radiation therapy equipment in a radiation therapy system, and the verification accuracy is higher. Fig. 1 is a schematic structural diagram of a portal verification device according to an embodiment of the present application, and as shown in fig. 1, the portal verification device may include:
a main body 01, the main body 01 having a first face 011 and a second face 012 (not shown in fig. 1) opposite to each other, the first face 011 having two calibration lines 01a intersecting perpendicularly. The first face 011 and the second face 012 may be parallel to each other. Each of the calibration lines 01a may be formed using an engraving (e.g., laser engraving) process, a printing process, or a line attaching process.
Fig. 2 is a schematic view of a second surface of a main body according to an embodiment of the present disclosure. As can be seen with reference to fig. 2, the portal verification apparatus may further include: an authentication unit 02 provided on the second face 012. The verification component 02 may be at least one, at least one may refer to one or more, and one verification component 02 is exemplarily shown in fig. 2.
Wherein, each verification component 02 can comprise one or more verification metal lines 021, and an orthographic projection of a central point a of a graph surrounded by the one or more verification metal lines 021 on the first face 011 coincides with an intersection point B of the two calibration lines 01 a.
It should be noted that, if the pattern surrounded by the one or more verification metal lines 021 is a central symmetric pattern, the central point of the pattern may refer to the symmetric center of the pattern. If the pattern surrounded by the one or more verification metal lines 021 is a non-centrosymmetric pattern, the center point of the pattern may refer to the center of the minimum circumscribed circle of the pattern.
In the embodiment of the present application, the verification metal line 021 can be made of a heavy metal material with a high density, which can be imaged on an imaging component such as a film or an EPID after being irradiated by a beam such as an X-beam or a gamma beam. For example, a tungsten alloy or a lead alloy may be used. Also, the pattern surrounded by the one or more verification metal lines 021 can be designed according to the shape and size of the radiation field (i.e., the ideal radiation field) desired to be formed by the radiotherapy apparatus. That is, the position of each verification metal line 021 on the second face 012 can be designed according to the shape and size of the desired field, including the length of the verification metal line 021 and the distance from the central point a, so that the figure surrounded by the one or more verification metal lines 021 can indicate the desired field.
Typically, the desired field may be a centrally symmetric pattern, for example, a square, which may be 5 centimeters (cm) by 5cm, 10cm by 10cm, 20cm by 20cm, or 30cm by 30cm, etc. in size. Accordingly, referring to fig. 2, each verification component 02 may include four verification metal lines 021 of equal length, and the four verification metal lines 021 may enclose a square.
Taking an imaging component as a film as an example, a description is given to a usage flow of the portal verification device provided in the embodiment of the present application:
first, a film is fixed to the second surface 012 of the main body 01, and then the second surface 012 of the main body 01 is directed to a treatment couch, and the radiation field verification device to which the film is fixed is placed on the treatment couch.
And secondly, adjusting the position of the field verification device to align two calibration lines 01a on the first surface 011 of the main body 01 of the field verification device with the cross line of the laser lamp.
For example, fig. 3 is a schematic diagram of a radiation therapy system provided by an embodiment of the present application, and as shown in fig. 3, the radiation therapy system may include a radiation therapy device 10, a treatment couch 20, and two laser lamps 30 disposed in a treatment room. The gantry of the radiotherapy apparatus 10 may be a drum, and one laser lamp 30 of the two laser lamps 30 may be disposed at a side of an entrance of the drum, and may emit a laser line in a direction perpendicular to an axis of the drum. Another laser light 30 may be provided opposite the drum entrance, capable of emitting a laser line in a direction coinciding with the drum axis. The two laser lines intersect to form a cross line of the laser lamp. When the position of the radiation field verifying device is adjusted, two calibration lines 01a on the first face 011 of the main body 01 can be aligned with the laser lamp cross line.
At this time, the intersection B of the two calibration lines 01a on the first plane 011 of the main body 01 has a predetermined positional relationship with the isocenter of the radiotherapy apparatus. That is, the distance between the intersection point B and the isocenter of the radiotherapy apparatus at this time is a preset distance.
Third, the position of the treatment couch is adjusted so that the intersection point B on the first surface 011 of the radiation field verification apparatus main body 01 coincides with the isocenter of the radiotherapy apparatus.
For example, the treatment couch may be pushed into the drum according to the predetermined positional relationship, and the treatment couch may be pushed into the drum by the predetermined distance, so that the intersection point B of the two calibration lines 01a on the first surface 011 of the main body 01 coincides with the isocenter of the radiotherapy apparatus.
And fourthly, adjusting the position of a radiation field forming component of the radiotherapy equipment according to the expected radiation field, and controlling the treated hair to emit beams.
The beam emitted by the treatment head can be imaged on the film after passing through the field forming component (comprising a diaphragm, a multi-leaf collimator and the like) and the field verification device. The imaging on the film may include imaging of the actual field formed by the beam after passing through the field shaping assembly, as well as imaging of the pattern enclosed by each verification assembly 02 in the field verification device.
And fifthly, verifying the radiation field of the radiotherapy equipment according to the imaging on the film.
Since the pattern defined by the verification metal lines in the verification component 02 is the shape of the desired field, it is possible to verify whether the position of the field of the radiotherapy apparatus is accurate, i.e., whether the field forming component such as the multileaf collimator and the diaphragm is normal, by comparing the deviation between the imaging of the actual field on the film and the imaging of the pattern defined by the verification component. When the position of the radiation field of the radiotherapy equipment is verified to be inaccurate, the verifier can also adjust the position of the multi-leaf collimator and/or the diaphragm according to the deviation so as to calibrate the position of the radiation field of the radiotherapy equipment.
It should be noted that, after the second step and before the third step, the verifier may also place a solid water phantom on the first face 011 of the main body 01 of the portal verification device. The solid water phantom may be a solid phantom formed of a material having a mass density, an electron density, and an effective atomic number nearly identical to that of water. The solid water model can effectively reduce the scattering of the beam, so that the imaging on the film is sharper, the edge of the imaging is clearer, the deviation of the observation of verification personnel is facilitated, and the verification efficiency and accuracy are improved.
To sum up, this application embodiment provides a field verification device, and the first face of this field verification device's main part is provided with two calibration lines, is provided with the subassembly of verifying including verifying the metal wire on the second face. The two calibration lines can align the radiation field verification device with the isocenter of the radiotherapy equipment, so that the imaging of the verification assembly on the imaging assembly can be ensured to indicate the expected radiation field. The verification personnel can directly verify whether the position of the radiation field of the beam is accurate or not by comparing the actual radiation field imaging on the imaging assembly with the imaging deviation of the verification assembly, and the radiation field verification device has higher accuracy in radiation field verification.
Alternatively, in the embodiment of the present application, the second face 012 of the main body 01 of the portal verification device may be provided with a plurality of verification assemblies 02. The shapes and sizes of the patterns surrounded by the plurality of verification assemblies 02 may be different, so that the verification of fields of different shapes and sizes can be realized.
For example, the figures enclosed by the plurality of verification components 02 may be all squares, and the sides of the squares enclosed by the verification components 02 may be different.
Fig. 4 is a schematic view of a second surface of another main body provided in an embodiment of the present application, and as shown in fig. 4, the portal verification apparatus may further include: a first reference wire 03 and a second reference wire 04 provided on the second face 012. The first reference metal line 03 and the second reference metal line 04 perpendicularly intersect, and the intersection of the first reference metal line 03 and the second reference metal line 04 coincides with the center point a.
In the embodiment of the present application, each of the first reference metal line 03 and the second reference metal line 04 may also be made of a metal material having a relatively high density and capable of being imaged on an imaging element after being irradiated by a beam, such as an X-beam or a gamma beam. Also, in order to simplify the manufacturing process, the reference metal line and the verification metal line may be made of the same material. For example, the reference wire and the verification wire may both be wires made of a tungsten alloy or both be wires made of a lead alloy.
By providing the first reference metal line 03 and the second reference metal line 04 which intersect perpendicularly, it is ensured that after the beam passes through the field shaping assembly and the field verification device and is irradiated on the imaging assembly, the imaging on the imaging assembly also includes the imaging of the first reference metal line 03 and the second reference metal line 04. The imaging of the first reference metal wire 03 and the second reference metal wire 04 on the imaging assembly can be used as coordinate axes of the imaging of the actual radiation field and the imaging of the verification assembly 02, so that the verification personnel can conveniently observe the deviation between the imaging of the actual radiation field and the imaging of the verification assembly 02, and the efficiency and the accuracy of verification can be further improved.
Alternatively, referring to fig. 2 and 4, each verification component 02 may include four verification metal lines 021. For example, four verification components 02 are shown in FIG. 4, wherein a first verification component 02 includes four verification metal lines 021a, a second verification component 02 includes four verification metal lines 021b, a third verification component 02 includes four verification metal lines 021c, and a fourth verification component 02 includes four verification metal lines 021 d.
As shown in fig. 4, the two verification metal lines 021 in each verification assembly 02 may be perpendicular to the first reference metal line 03 and symmetrically arranged at both sides of the center point a. The other two verification metal lines 021 may be perpendicular to the second reference metal line 04 and symmetrically arranged at two sides of the center point a.
Or it can be understood that the central point a can divide the first reference metal line 03 and the second reference metal line 04 into four half-axes of upper, lower, left and right, each verification metal line 021 of the four verification metal lines 02 includes, each verification metal line 021 perpendicularly intersects one of the half-axes, and the four verification metal lines 021 are equidistant from the central point a.
For example, as shown in fig. 4, in the four verification elements 02 disposed on the second side 012 of the main body 01, the distance d1 between each verification metal line 021a and the central point a in the first verification element 02 may be 25 millimeters (mm), and the desired field surrounded by the first verification element 02 is 5cm × 5 cm. The distance d2 between each verification metal line 021b and the center point A in the second verification component 02 can be 50mm, and the desired field size surrounded by the second verification component 02 is 10cm × 10 cm. The distance d3 between each verification metal line 021c and the center point A in the third verification component 02 can be 100mm, and the size of the desired field surrounded by the third verification component 02 is 20cm × 20 cm. The distance d4 between each verification metal line 021d and the center point A in the fourth verification component 02 can be 150mm, and the desired field size surrounded by the fourth verification component 02 is 30cm × 30 cm.
In the embodiment of the present application, an orthogonal projection of the first reference metal line 03 on the first plane 011 can coincide with one calibration line 01a, and an orthogonal projection of the second reference metal line 04 on the first plane 011 can coincide with the other calibration line 01 a. Thereby, the symmetry of the overall structure of the body 01 can be ensured.
Alternatively, as shown in fig. 1, 2 and 4, the first face 011 and the second face 012 of the body 01 may both be cross-shaped, that is, the body 01 may be a cross-cube structure. Also, the center point a of the figure enclosed by each verification component 02 may coincide with the center point of the second face 012.
In the embodiment of the present invention, the cross cube may be divided into four half shafts using the central point of any one of the first surface and the second surface as the origin. The four half-shafts may be equal in length, equal in width, and equal in thickness. That is, the first surface 011 and the second surface 012 have the same cross shape and are both in a central symmetrical pattern.
For example, referring to fig. 1, the length l of the body 01 may be 320mm, the width w may be 30mm, and the thickness h may be 6 mm. The length of the body 01 may refer to the sum of the lengths of two half shafts which are collinear among the four half shafts, and the width w may refer to the width of any half shaft. The body 01 has a length direction and a width direction both parallel to the first face 011 (or the second face 012) and a thickness direction perpendicular to the first face 011 (or the second face 012).
By designing the main body 01 into a cross-cube structure, the volume of the main body 01 can be reduced on the premise of ensuring that the calibration line 01a, the verification assembly 02 and the reference metal line can be effectively arranged, so that the obstruction and the interference of the main body 01 to the beam can be effectively reduced, and the manufacturing cost can be reduced.
Of course, the body 01 may have other shapes such as a cylinder or a cube. For example, referring to fig. 5, the body 01 may be a cylinder, and the verification assembly 02 provided on the second side 012 of the body 01 may include only one verification wire, which may enclose a desired field shape, for example, may enclose a square.
In the embodiment of the present application, the main body 01 may be made of aluminum, aluminum alloy, or hard plastic, which not only ensures that the main body 01 has light weight, good wear resistance, easy processing, and less interference to the beam.
Fig. 6 is a cross-sectional view of a main body 01 according to an embodiment of the present disclosure, and referring to fig. 6, a groove 012a may be further disposed on a second surface 012 of the main body 01, and each authentication wire 021 may be disposed in the groove 012 a.
Alternatively, if two reference metal lines are further disposed on the second surface 012 of the main body 01, the two reference metal lines may be disposed in the groove 012 a.
For example, the second side 012 of the main body 01 may be provided with a plurality of grooves 012a corresponding to the one or more verification metal lines 021 and the two reference metal lines, wherein the size of each groove 012a may match the size of the corresponding metal line, and each metal line may be disposed in the corresponding groove 012 a.
As can be seen by referring to fig. 4 and 5, there are intersecting metal lines among the plurality of metal lines provided on the second face 012 of the main body 01. For example, the first reference metal line 03 and the second reference metal line 04 intersect, and each verification metal line 021 intersects with one reference metal line. Therefore, as shown in fig. 6, the two intersecting wires may be disposed at different depths of the recess 012a, that is, the two intersecting wires may be staggered in the depth direction of the recess 012 a.
Of course, two intersecting metal lines may be arranged in the same layer in the groove 012 a. If the arrangement mode of the same layer arrangement is adopted, one of the two intersected metal wires can be composed of two metal wire segments arranged at intervals.
In the embodiment of the present application, the width of the groove 012a, the diameter of each verification metal line 021 and each reference metal line may be all 1mm, the length of each verification metal line 021 may be 30mm, and the length of each reference metal line may be 320 mm. Or, if the two reference metal lines are arranged in the same layer, the length of one of the reference metal lines may be 320mm, and the other reference metal line may be composed of two 159mm metal line segments.
It should be noted that the second side 012 of the main body 01 does not need to be provided with a groove, and the verification metal wire 021 and the reference metal wire may be provided on the second side 012 by means of adhesion or welding.
Optionally, referring to fig. 4, one or more card slot sets may be disposed on the second face 012. For example, two card slot sets 05a and 05b are shown in FIG. 4. Wherein each slot group 05 may comprise: two clamping grooves 051 symmetrically arranged along the central point A.
Each of the card slots 051 may be used to engage an edge of the film, and the one or more card slot sets may fix the film on the second surface 012 of the main body 01 to prevent the film from moving, thereby ensuring reliability of imaging.
In the embodiment of the present application, the distance between each card slot 051 and the central point a may be determined according to the size of a film to be placed. For example, the distance between each card slot 051 and the center point a may be 10mm to 15mm, and the size of the set of card slots that can be used to hold film may be 8 inches by 10 inches, 10 inches by 10 inches, or 14 inches by 14 inches, etc.
Of course, the second surface 012 of the main body 01 does not need to be provided with a slot set, and accordingly, the film may be fixed to the second surface 012 of the main body 01 by other methods, for example, the film may be fixed to the second surface 012 by adhesion.
Fig. 7 is a schematic structural diagram of a main body provided by an embodiment of the present application, in which a film is fixed on a second surface of the main body, and as shown in fig. 4 and 7, two card slot sets 05a and 05b may be disposed on the second surface 012, and two card slots 051 included in each card slot set may be in a strip shape and are parallel to each other. Two card slots 051 included in one card slot group 05a are perpendicular to the first reference metal wire 03, and two card slots 051 included in the other card slot group 05b are perpendicular to the second reference metal wire 04. The two card slot sets 05a and 05b can be used to fix the four sides of the film 00, thereby ensuring stability to the film fixation.
In the embodiment of the present application, if the film 00 to be fixed is square, each of the card slots 051 in the two card slot sets 05a and 05b is equidistant from the center point a. If the film 00 to be fixed is a non-square rectangle as shown in fig. 7, the distance between the card slot 051 in the two card slot sets 05a and 05b and the center point a may be different.
Fig. 8 is a schematic diagram of a first side of a main body according to an embodiment of the present disclosure, and as shown in fig. 8, four sets of graduation lines 06a, 06b, 06c and 06d may also be disposed on the first side 011 of the main body 01. Two of the sets of graduations 06a and 06b correspond to one calibration line 01a and the other two sets of graduations 06c and 06d correspond to the other calibration line 01 a.
Wherein, many scale marks that every scale line group includes use the nodical B of these two calibration lines 01a as the original point, arrange along the extending direction of a corresponding calibration line 01a, and can be opposite with the direction of arranging of two scale line groups that same calibration line 01a corresponds. That is, two scale line groups corresponding to the same calibration line 01a may respectively identify scales of line segments of the calibration line 01a located at two sides of the intersection point B.
The light field verification device provided with the scale line group can also verify the position of a light field emitted by the light field indicator, and the verification process is as follows:
first, an intersection point B of two calibration lines 01a on the first surface 011 of the main body 01 of the field verification apparatus coincides with the isocenter of the radiotherapy apparatus. The method for coinciding the intersection point B with the isocenter may refer to the above description, and is not described herein again. Then, the light field emitted from the light field indicator may be controlled to be irradiated to the first face 011 of the main body 01 to form an actual light field on the first face 011. And finally, judging whether the actual position of the light field is accurate or not according to the scale marks on the first surface 011. If the actual position of the light field is deviated from the expected position of the light field and the deviation exceeds a preset deviation range, the verifier can adjust the position of the light field indicator according to the scale marks on the first surface 011.
Alternatively, referring to FIG. 8, each tick group can comprise a plurality of discrete sub tick groups 061. Moreover, the number of the sub-scale line groups 061 included in each scale line group may be the same, and the scale ranges may also be the same.
The scale range of each sub-scale group 061 may also be determined according to the size of the expected portal, the scale ranges of different sub-scale groups 061 may correspond to the expected portals of different sizes, and the plurality of discontinuous sub-scale groups 061 may further implement verification of the portals of different sizes.
For example, as shown in FIG. 8, each scale group may include three discrete sub-scale group 061, where the scales of the three sub-scale group 061 range from 20mm to 60mm, 90mm to 110mm, and 140mm to 155 mm.
In this embodiment of the application, in order to facilitate the verification personnel to determine the position deviation of the actual light field, a scale may be further disposed in the region where each sub-scale group 061 is located on the first surface 011. And one or more scales may be set in the area where each sub-scale group 061 is located. If only one scale is set, the scale may be the median of the scale range of the sub-scale group 061.
By way of example, with continued reference to FIG. 8, two scales, 25 and 50, may be provided for each region where a sub-scale group 061 having a scale range of 20mm to 60mm is located. The scale 100 may be provided in an area where the sub-scale group 061 having a scale range of 90mm to 110mm is located. The scale 150 may be provided in an area where the sub-scale group 061 having a scale range of 140mm to 155mm is located.
To sum up, this application embodiment provides a field verification device, and the first face of this field verification device's main part is provided with two calibration lines, is provided with the subassembly of verifying including verifying the metal wire on the second face. The two calibration lines can align the radiation field verification device with the isocenter of the radiotherapy equipment, so that the imaging of the verification assembly on the imaging assembly can be ensured to indicate the expected radiation field. The verification personnel can directly verify whether the position of the radiation field of the beam is accurate or not by comparing the actual radiation field imaging on the imaging assembly with the imaging deviation of the verification assembly, and the radiation field verification device has higher accuracy in radiation field verification.
Fig. 9 is a schematic structural diagram of another radiation therapy system provided in the embodiment of the present application, and referring to fig. 9, the system may include a radiation therapy apparatus 10, a treatment couch 20, and a portal verification device 40 as described in the above embodiment.
The radiation field verifying device 40 may be disposed on the treatment couch 20, and the second surface 012 of the main body 01 of the radiation field verifying device 40 faces the treatment couch 20.
As can be seen with reference to FIG. 9, the radiation therapy system may also include two laser lamps 30, one of which 30 is positioned at the side of the drum entrance of the radiation therapy device 10 and may emit laser lines in a direction perpendicular to the drum axis. Another laser light 30 may be provided opposite the drum entrance, emitting a laser line in a direction coincident with the drum axis.
Alternatively, as shown in fig. 3 and 9, the gantry of the radiation therapy apparatus 10 may be a drum; the radiation therapy system may further include: and an image pickup device 50 disposed in the drum. The camera 50 may include one or more cameras.
At cylinder internally mounted camera device 50, can make things convenient for the verification personnel to examine scale mark and scale on the first face 011 of main part 01 of this field verification device 40 when verifying the light field of field indicator to efficiency and accuracy when improving the light field and verifying.
Optionally, in this embodiment of the present application, the system may further include an imaging component, which may be a film or an EPID. Wherein the EPID can be positioned opposite a treatment head in the radiation therapy device 10, which can replace film imaging.
The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (12)
1. A portal verification device, comprising:
the main body is provided with a first surface and a second surface which are opposite, and the first surface is provided with two perpendicularly crossed calibration lines;
the verification components are arranged on the second surface and each verification component comprises one or more verification metal lines, and the orthographic projection of the central point of a graph defined by the one or more verification metal lines on the first surface is coincided with the intersection point of the two calibration lines.
2. The portal verification device according to claim 1, further comprising: a first reference metal line and a second reference metal line disposed on the second face;
the first reference metal line and the second reference metal line intersect perpendicularly, and an intersection of the first reference metal line and the second reference metal line coincides with the center point.
3. The portal verification device of claim 2, wherein each of said verification assemblies comprises four of said verification wires;
wherein two of the verify metal lines are perpendicular to the first reference metal line and two other of the verify metal lines are perpendicular to the second reference metal line.
4. The portal verification device of claim 2, wherein an orthographic projection of the first reference metal line on the first face coincides with one of the calibration lines, and an orthographic projection of the second reference metal line on the first face coincides with the other of the calibration lines.
5. The portal verification device of claim 2, wherein a groove is further disposed on the second face, and each of the verification metal lines, the first reference metal line and the second reference metal line is disposed in the groove.
6. The portal verification device of any one of claims 1 to 5, wherein one or more card slot sets are further provided on the second face;
each of the card slot sets includes: and the two clamping grooves are symmetrically arranged along the central point and are used for clamping the film.
7. The portal verification device of any one of claims 1 to 5, wherein the first face and the second face are each cross-shaped;
the center point of the figure coincides with the center point of the second face.
8. The portal verification device according to any one of claims 1 to 5, wherein four sets of scale lines are further provided on the first surface, two of the sets of scale lines corresponding to one of the calibration lines, and the other two sets of scale lines corresponding to the other calibration line;
each scale line group comprises a plurality of scale lines which are arranged along the extending direction of the corresponding calibration line by taking the intersection point of the two calibration lines as the original point, and the arrangement directions of the two scale line groups corresponding to the same calibration line are opposite.
9. The portal verification device of claim 2, wherein the body is made of aluminum, aluminum alloy or rigid plastic;
the verification metal line, the first reference metal line and the second reference metal line are made of tungsten alloy or lead alloy.
10. A radiation therapy system, comprising: radiotherapy apparatus, a treatment couch and a portal verification device as claimed in any one of claims 1 to 9;
wherein the radiation field verification device is arranged on the treatment couch, and the second surface of the main body of the radiation field verification device faces the treatment couch.
11. The radiation therapy system of claim 10, wherein the gantry of the radiation therapy device is a drum; the radiation therapy system further comprises: and the camera device is arranged in the roller.
12. The radiation therapy system of claim 10 or 11, wherein said system further comprises: an imaging assembly;
the imaging component is a film or an electronic portal imaging device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921741370.5U CN211584937U (en) | 2019-10-16 | 2019-10-16 | Radiation field verification device and radiotherapy system |
| PCT/CN2020/120944 WO2021073540A1 (en) | 2019-10-16 | 2020-10-14 | Field verification device and radiotherapy system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921741370.5U CN211584937U (en) | 2019-10-16 | 2019-10-16 | Radiation field verification device and radiotherapy system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021073540A1 (en) * | 2019-10-16 | 2021-04-22 | 深圳市奥沃医学新技术发展有限公司 | Field verification device and radiotherapy system |
| CN115137991A (en) * | 2021-03-31 | 2022-10-04 | 西安大医集团股份有限公司 | Verification die body and radiotherapy equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102908162B (en) * | 2011-08-02 | 2015-06-17 | 北京中科美伦医疗股份有限公司 | DR (digital radiography) equipment, light field and radiation field detector and light field and radiation field debugging method |
| CN105983182B (en) * | 2015-02-27 | 2020-10-16 | 苏州雷泰医疗科技有限公司 | Composite quality assurance die body |
| CN205948193U (en) * | 2016-05-17 | 2017-02-15 | 华中科技大学同济医学院附属同济医院 | Radiotherapy quality control inspection device |
| CN107510898B (en) * | 2017-10-11 | 2021-04-16 | 上海联影医疗科技股份有限公司 | Light field and radiation field verification device and verification method for medical equipment |
| CN107913079B (en) * | 2017-11-22 | 2022-03-01 | 上海联影医疗科技股份有限公司 | Radiation field verification device and method for medical equipment |
| CN211584937U (en) * | 2019-10-16 | 2020-09-29 | 深圳市奥沃医学新技术发展有限公司 | Radiation field verification device and radiotherapy system |
-
2019
- 2019-10-16 CN CN201921741370.5U patent/CN211584937U/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021073540A1 (en) * | 2019-10-16 | 2021-04-22 | 深圳市奥沃医学新技术发展有限公司 | Field verification device and radiotherapy system |
| CN115137991A (en) * | 2021-03-31 | 2022-10-04 | 西安大医集团股份有限公司 | Verification die body and radiotherapy equipment |
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| WO2021073540A1 (en) | 2021-04-22 |
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