CN219957872U - Interventional radiology CBCT equipment KAP indication deviation detection device - Google Patents
Interventional radiology CBCT equipment KAP indication deviation detection device Download PDFInfo
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- CN219957872U CN219957872U CN202321288457.8U CN202321288457U CN219957872U CN 219957872 U CN219957872 U CN 219957872U CN 202321288457 U CN202321288457 U CN 202321288457U CN 219957872 U CN219957872 U CN 219957872U
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- 238000002697 interventional radiology Methods 0.000 title claims abstract description 39
- 238000007408 cone-beam computed tomography Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 title claims description 19
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000003384 imaging method Methods 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000005855 radiation Effects 0.000 description 7
- 238000002591 computed tomography Methods 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a device for detecting KAP indication deviation of interventional radiology CBCT equipment, which is applied to interventional radiology cone beam X-ray computer body layer imaging equipment; comprising the following steps: the die body backboard, the multifunctional lead ruler, the dosimeter clamp, the dosimeter and the like; wherein, the center position of the die body backboard is provided with a positioning steel ball; the four sides of the die body backboard are respectively provided with a threaded hole, and the threaded holes are provided with supporting and positioning rods; the multifunctional lead ruler is a lead graduated scale with a crisscross structure, and positioning holes are formed in four end positions; the multifunctional lead ruler is fixed on the die body backboard through the positioning holes and the supporting and positioning rods; the dosimeter is fixed in the central position of the die body backboard through a dosimeter clamp. The utility model relieves the technical problems of large positioning error of the center of the irradiation field, non-coplanarity of the KAP measurement plane and the measurement of the dimension of the irradiation field, positioning error of a lead ruler or a film, complicated operation steps and large consumption of the film in the traditional dosimeter method.
Description
Technical Field
The utility model relates to the technical field of quality control and detection of radiation diagnosis and treatment equipment in radiation protection, in particular to a device for detecting KAP indication deviation of interventional radiology CBCT equipment.
Background
Interventional radiology cone beam X-ray computed tomography (Cone Beam Computed Tomography, CBCT) devices are emerging X-ray imaging technologies in recent years, whose imaging principles are substantially different from conventional CT, so that the accuracy of the radiation dose received and its display during patient examination is a research focus in the field of radiation protection.
The Product of Air Kerma-Area Product (KAP) is the Product of the cross-sectional Area of the radiation beam and the Air Kerma in the Area range, which is an indication of the patient dose, and the relevant regulations and standards in China require that the CBCT equipment accurately display KAP values on the examination interface for medical technicians to timely master and control the patient radiation dose. Newly issued "Cone Beam X-ray computed tomography (CBCT) equipment quality control detection standards" (WS 818-2023) require the use of non-invasive measurement methods to detect the accuracy of the equipment KAP indication, which indicates that the equipment will be forcibly deactivated after the deviation exceeds a specified limit. The standard recommends detection of KAP indication bias using both KAP and dosimeter methods. At present, the national highest legal and metering technical institution, namely the national institute of metering science, does not establish a KAP instrument value traceability system, can not calibrate or calibrate the KAP instrument, and the accuracy of the KAP instrument method can not be ensured. In addition, the domestic main stream model KAP instrument mainly depends on import, equipment is expensive, the popularization and use period is long, and the use of the method is limited. The dosimeter method needs to use an attenuation die body, a dosimeter, a film or a lead ruler and the like to carry out manual positioning and then measurement, and has the problems of complicated operation steps, easy occurrence of positioning errors, difficult searching of an irradiation field, large consumption of the film and the like.
Disclosure of Invention
The present utility model aims to solve at least one of the above problems and provide a KAP indication deviation detecting device of interventional radiology CBCT equipment.
In a first aspect, an embodiment of the present utility model provides a KAP indication deviation detection device of an interventional radiology CBCT apparatus, which is applied to an interventional radiology cone beam X-ray computer tomography apparatus; comprising the following steps: the device comprises a die body backboard, a dosimeter, a multifunctional lead ruler and a dosimeter clamp; the center of the die body backboard is provided with a positioning steel ball; the four sides of the die body backboard are respectively provided with a threaded hole, and the threaded holes are provided with supporting and positioning rods; the multifunctional lead ruler is a lead graduated scale with a crisscross structure, and positioning holes are formed in four end points; the multifunctional lead ruler is fixed on the die body backboard through the positioning holes and the supporting and positioning rods; the multifunctional lead ruler is used for measuring the side length of the irradiation field of the interventional radiology cone beam X-ray computer body layer imaging device; the dosimeter is fixed at the center of the die body backboard through the dosimeter clamp and is used for measuring air kerma at the center of an irradiation field of the interventional radiology cone beam X-ray computer body layer imaging device.
Further, the die body backboard is a rectangular organic glass board.
Further, the positioning steel balls are arranged on the upper surface of the die body backboard.
Further, the multifunctional lead rule comprises an X-ray radioactivity detection lead rule.
Further, the multifunctional lead ruler comprises a transverse lead graduated scale and a vertical lead graduated scale; the transverse lead graduated scale and the vertical lead graduated scale are mutually perpendicular and are integrally arranged; and zero scale marks are arranged on the positions, corresponding to the positioning steel balls, of the transverse lead scale and the vertical lead scale.
Further, film grooves are formed in the lateral sides of the transverse lead graduated scale and the vertical lead graduated scale, and the film grooves are used for placing X-ray film strips; wherein the length and width of the X-ray film strip are equal to the length and width of the film slot, respectively.
Further, positioning pointers are arranged at the positions of zero graduation marks on the upper surfaces of the transverse lead graduated scale and the vertical lead graduated scale, and the positioning pointers point to the effective measurement plane marking lines of the dosimeter; the positioning pointer is used for indicating and adjusting that the multifunctional lead ruler and the effective measuring plane of the dosimeter are positioned on the same horizontal plane.
Further, one end of the supporting and positioning rod is of a threaded structure, and the other end of the supporting and positioning rod is provided with scales.
Further, connecting holes are respectively formed in two sides of the dosimeter clamp; the dosimeter clamp is fixed on the upper surface of the die body backboard through the connecting hole and the fixing bolt, and the dosimeter is fixed between the dosimeter clamp and the upper surface of the die body backboard.
Further, a measuring hole is further formed in the position, corresponding to the effective measuring area of the dosimeter, on the dosimeter clamp.
The utility model provides a device for detecting KAP indication deviation of interventional radiology CBCT equipment, which simplifies tedious operations in irradiation field center positioning and irradiation field size measurement and improves measurement accuracy by combining a die body backboard, a dosimeter and a multifunctional lead ruler or film strip into an integrated measurement device, and solves the technical problems of large irradiation field center positioning error, non-coplanarity between KAP measurement points and irradiation field size measurement, positioning error of the lead ruler or film, tedious operation steps and large film consumption existing in the traditional dosimeter method.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the embodiments and the prior art will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the utility model and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a top view of a device for detecting KAP indication deviation of interventional radiology CBCT equipment according to an embodiment of the present utility model;
FIG. 2 is a side view of a device for detecting KAP indication deviation of interventional radiology CBCT equipment according to an embodiment of the present utility model;
FIG. 3 is a schematic view showing a positioning pointer received in a surface of a multifunctional lead rule according to an embodiment of the present utility model
Fig. 4 is a side view of a multi-functional lead rule provided in accordance with an embodiment of the present utility model.
In the figure: 1. the die body backboard, 2, the dosimeter, 3, the multifunctional lead ruler, 4, the positioning steel ball, 5, the threaded hole, 6, the supporting and positioning rod, 7, the dosimeter clamp, 8, the connecting hole, 9, the film groove, 10, the fixing bolt, 11, the measuring hole, 12 and the positioning pointer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Fig. 1 is a top view of a KAP indication deviation detecting device of an interventional radiology CBCT apparatus according to an embodiment of the present utility model, which is applied to an interventional radiology cone beam X-ray computer tomography apparatus. As shown in fig. 1, the apparatus includes: the device comprises a die body backboard 1, a dosimeter 2, a multifunctional lead ruler 3 and a dosimeter clamp 7; the center of the die body backboard 1 is provided with a positioning steel ball 4; threaded holes 5 are respectively formed in four sides of the die body backboard 1.
Fig. 2 is a side view of a KAP indication deviation detecting device of an interventional radiology CBCT apparatus according to an embodiment of the present utility model. As shown in fig. 2, a supporting and positioning rod 6 is arranged on the threaded hole 5.
As shown in fig. 1, the multifunctional lead ruler 3 is a lead graduated scale with a cross structure, and four end points are provided with positioning holes; the multifunctional lead ruler 3 is fixed on the die body backboard 1 through a positioning hole and a supporting and positioning rod 6.
And a plurality of functional lead rulers 3 are used for measuring the side length of the irradiation field of the interventional radiology cone beam X-ray computer body layer imaging equipment, and further obtaining the area of the irradiation field through calculation.
The dosimeter 2 is fixed at the central position of the die body backboard 1 through a dosimeter clamp 7 and is used for measuring air kerma at the center of an irradiation field of the interventional radiology cone beam X-ray computer body layer imaging device.
Alternatively, the types of dosimeters 2 include rayshafe X2, unfor Xi, magicMax Universal, radcal Accu, and the like.
In the embodiment of the utility model, the die body backboard 1 is a rectangular organic glass plate. Optionally, the specification of the die body backboard 1 comprises a length and a width of 30cm and a thickness of 6cm. Alternatively, the threaded hole 5 has a diameter of 5mm. The positioning steel balls 4 are arranged on the upper surface of the die body backboard 1.
Alternatively, in the embodiment of the present utility model, the multi-functional lead 3 includes an X-ray radioactivity detecting lead.
Specifically, as shown in fig. 1, the multifunctional lead scale 3 includes a horizontal lead scale and a vertical lead scale; the transverse lead graduated scale and the vertical lead graduated scale are mutually perpendicular and are integrally arranged; wherein, the horizontal lead graduated scale and the vertical lead graduated scale are provided with zero graduation marks at the corresponding positions of the positioning steel balls 3.
Preferably, as shown in fig. 1, the positioning pointers 12 are arranged at the positions of zero graduation marks on the upper surfaces of the transverse lead graduated scale and the vertical lead graduated scale, and the positioning pointers 12 point to the effective measurement plane marking line of the dosimeter. In the embodiment of the utility model, the positioning pointer 12 is used for indicating and adjusting the multifunctional lead ruler 3 to be positioned on the same horizontal plane with the effective measuring plane of the dosimeter 2.
Alternatively, the positioning pointer 12 is fixed with the multifunctional lead rule 3 by a rivet, and the positioning pointer 12 is rotatable along the rivet.
Fig. 3 is a schematic view of a positioning pointer received into a surface of a multifunctional lead rule according to an embodiment of the present utility model. As shown in fig. 3, when the multifunctional lead 3 is not in use, the orientation of the positioning pointer 12 can be adjusted to be the same as the direction of the multifunctional lead 3, so that the multifunctional lead is convenient to store.
As shown in fig. 1, the lateral surfaces of the horizontal lead graduated scale and the vertical lead graduated scale are provided with film grooves 9, and the film grooves 9 are used for placing the X-ray film strips. Wherein the length and width of the X-ray film strip are equal to the length and width of the film slot 9, respectively.
Fig. 4 is a side view of a multi-functional lead rule provided in accordance with an embodiment of the present utility model. As shown in fig. 4, a film groove 9 is formed in the middle of the thickness of the multifunctional lead ruler 3.
Alternatively, the thickness of the multifunctional lead rule 3 is 3mm, and the film groove 9 is formed at a thickness position 1mm away from the upper surface of the multifunctional lead rule 3, and the thickness of the film groove 9 is 0.1mm.
Optionally, the film slot 9 is open to a width no greater than half the width of the multifunction lead 3.
As shown in fig. 1, a film slot 9 on the transverse lead scale is provided in the lower half of the lead scale, and the X-ray film strip is sandwiched by the film slot 9.
In some alternative embodiments provided by the embodiment of the present utility model, the film slot 9 may also be disposed on the upper half of the transverse lead scale, so that the X-ray film strip may be prevented from sliding out of the film slot 9, and the embodiment of the present utility model is not limited in particular by the specific arrangement of the film slot 9.
As shown in fig. 2, one end of the supporting and positioning rod 6 is in a threaded structure, and the other end is provided with scales. Alternatively, the length of the supporting and positioning rod 6 is 3cm, the length of the thread structure is 1cm, and the length of the end with the graduation is 2cm.
In the embodiment of the utility model, the multifunctional lead rule 3 can be fixed on the die body backboard 1 by penetrating the supporting and positioning rod 6 through the positioning hole of the multifunctional lead rule 3, and the plane of the multifunctional lead rule 3 is flush with the plane of the effective measuring point of the dosimeter 2 by observing the scale on the supporting and positioning rod 6 and the indication position of the positioning pointer 12 on the multifunctional lead rule 3.
As shown in fig. 1, two sides of the dosimeter clamp 7 are respectively provided with a connecting hole 8; wherein the connection hole 8 is used to pass through the fixing bolt 10. Specifically, as shown in fig. 2, the dosimeter holder 7 is fixed to the upper surface of the die body back plate 1 through the connection hole 8 and the fixing bolt 10, and the dosimeter 2 is fixed between the dosimeter holder 7 and the upper surface of the die body back plate 1.
As shown in fig. 1, the position of the dosimeter fixture 7 corresponding to the effective measurement area of the dosimeter is also provided with a measurement hole 11, so as to prevent the dosimeter fixture 7 from shielding the measurement area of the dosimeter 2.
Optionally, the dosimeter clamp 7 has a specification of 7cm long and 3cm wide, and the left 0.5cm position and the right 1cm position are respectively provided with a connecting hole 8.
The application method of the KAP indication deviation detection device of the interventional radiology CBCT equipment provided by the utility model comprises the following steps: firstly, vertically placing a die body backboard 1 on a CBCT equipment diagnosis and treatment bed, adjusting the position of a CBCT bulb tube or the diagnosis and treatment bed in a horizontal perspective mode, observing the lead ruler image of a display, enabling the scale values of a multifunctional lead ruler 3 to be symmetrical relative to zero scale in the transverse direction and the vertical direction, and then placing a dosimeter 2 at a positioning steel ball 4 in the center of the die body backboard 1; using a fluoroscopic or acquisition procedure exposure, the air kerma (i.e. the radiation dose) at the center of the irradiation field is measured by the dosimeter 2 CBCT apparatus. Meanwhile, the scale information of the multifunctional lead ruler 3 on the die body backboard 1 is read through the display screen image, the rectangular irradiation field area of the interventional radiology CBCT equipment is obtained, the KAP measured value of the interventional radiology CBCT equipment can be obtained based on the air kerma and the irradiation field area, and further the deviation between the KAP displayed value and the measured true value can be calculated.
In some alternative implementations provided by embodiments of the present utility model, the irradiation field area can also be measured using film positioned in the film slot. Specifically, 4 pieces of cut X-ray film strips are inserted into a film groove 9 of the multifunctional lead ruler 3, after the interventional radiology CBCT equipment exposes the multifunctional lead ruler 3, the exposure length of the X-ray film strips is observed and measured through a lead scale above the film groove, the irradiation field area can be calculated, and the KAP value of the interventional radiology CBCT equipment can be obtained through the air kerma measured by the bonding agent measuring instrument 2.
According to the device for detecting the KAP indication deviation of the interventional radiology CBCT equipment, provided by the utility model, the positioning pointer on the lead ruler is aligned with the mark line of the effective measurement plane of the dosimeter by adjusting the position of the crossed lead graduated scale on the supporting positioning rod, and the positioning holes on four sides of the lead ruler are positioned at the same scale position on the positioning rod, so that the effective measurement plane of the dosimeter 2 and the measurement plane of the film or the multifunctional lead ruler 3 are arranged on the same plane, the problem that the measured dose and the irradiation field area are not coplanar is solved, and the KAP measurement accuracy and convenience are improved; by arranging the positioning steel ball 4 at the center of the die body backboard 1, the dosimeter 2 is ensured to be arranged at the center of the irradiation field, and the problems of positioning errors of the dosimeter and complicated steps for searching the center of the irradiation field are solved.
As can be seen from the above description, the present utility model provides a KAP indication deviation detection device for an interventional radiology CBCT apparatus, which simplifies the complicated operations in the positioning of the center of an irradiation field and the measurement of the size of the irradiation field, improves the measurement accuracy, and alleviates the technical problems of large positioning error of the center of the irradiation field, non-coplanarity of KAP measurement points and the measurement of the size of the irradiation field, positioning error of a lead ruler or a film, complicated operation steps and large film consumption existing in the conventional dosimeter method by combining a die body backboard, a dosimeter, a multifunctional lead ruler and a positioning steel ball into an integrated measurement device. The measuring device provides 2 KAP indication deviation measuring methods such as a film method, a lead graduation method and the like.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The device for detecting the KAP indication deviation of the interventional radiology CBCT equipment is characterized by being applied to interventional radiology cone beam X-ray computer body layer imaging equipment; comprising the following steps: the device comprises a die body backboard, a multifunctional lead ruler, a dosimeter and a dosimeter clamp; the center of the die body backboard is provided with a positioning steel ball; the four sides of the die body backboard are respectively provided with a threaded hole, and the threaded holes are provided with supporting and positioning rods;
the multifunctional lead ruler is a lead graduated scale with a crisscross structure, and positioning holes are formed in four end points; the multifunctional lead ruler is fixed on the die body backboard through the positioning holes and the supporting and positioning rods;
the multifunctional lead ruler is used for measuring the side length of the irradiation field of the interventional radiology cone beam X-ray computer body layer imaging device;
the dosimeter is fixed at the center of the die body backboard through the dosimeter clamp and is used for measuring air kerma at the center of an irradiation field of the interventional radiology cone beam X-ray computer body layer imaging device.
2. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 1, wherein: the die body backboard is a rectangular organic glass board.
3. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 1, wherein: the positioning steel balls are arranged on the upper surface of the die body backboard.
4. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 1, wherein: the multifunctional lead ruler comprises an X-ray radioactivity detection lead ruler.
5. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 1, wherein: the multifunctional lead ruler comprises a transverse lead graduated scale and a vertical lead graduated scale; the transverse lead graduated scale and the vertical lead graduated scale are mutually perpendicular and are integrally arranged;
and zero scale marks are arranged on the positions, corresponding to the positioning steel balls, of the transverse lead scale and the vertical lead scale.
6. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 5, wherein: the lateral surfaces of the transverse lead graduated scale and the vertical lead graduated scale are respectively provided with a film groove, and the film grooves are used for placing X-ray film strips; wherein the length and width of the X-ray film strip are equal to the length and width of the film slot, respectively.
7. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 5, wherein: positioning pointers are arranged at the positions of zero graduation marks on the upper surfaces of the transverse lead graduated scale and the vertical lead graduated scale, and the positioning pointers point to the effective measurement plane marking line of the dosimeter;
the positioning pointer is used for indicating and adjusting that the multifunctional lead ruler and the effective measuring plane of the dosimeter are positioned on the same horizontal plane.
8. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 1, wherein: one end of the supporting and positioning rod is of a threaded structure, and the other end of the supporting and positioning rod is provided with scales.
9. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 1, wherein: connecting holes are respectively formed in two sides of the dosimeter clamp; the dosimeter clamp is fixed on the upper surface of the die body backboard through the connecting hole and the fixing bolt, and the dosimeter is fixed between the dosimeter clamp and the upper surface of the die body backboard.
10. The interventional radiology CBCT apparatus KAP indication deviation detection device of claim 9, wherein: and a measuring hole is further formed in the position, corresponding to the effective measuring area of the dosimeter, on the dosimeter clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321288457.8U CN219957872U (en) | 2023-05-25 | 2023-05-25 | Interventional radiology CBCT equipment KAP indication deviation detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321288457.8U CN219957872U (en) | 2023-05-25 | 2023-05-25 | Interventional radiology CBCT equipment KAP indication deviation detection device |
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| CN219957872U true CN219957872U (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321288457.8U Active CN219957872U (en) | 2023-05-25 | 2023-05-25 | Interventional radiology CBCT equipment KAP indication deviation detection device |
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| CN (1) | CN219957872U (en) |
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- 2023-05-25 CN CN202321288457.8U patent/CN219957872U/en active Active
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