KR20170037097A

KR20170037097A - Phantom apparatus for measuring dose of remote radiation

Info

Publication number: KR20170037097A
Application number: KR1020150136210A
Authority: KR
Inventors: 정원규; 김동욱; 윤명근; 정미주
Original assignee: 경희대학교 산학협력단
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2017-04-04
Also published as: KR101752973B1

Abstract

A phantom device for measuring a remote dose of radiation according to the invention comprises at least one of a measuring unit comprising at least one plate having a dosimeter and a photoreceptor for measuring the dose and distribution of radiation and at least one of link means and adsorption means And a support unit which supports the measurement unit and fixes the measurement unit. According to this configuration, it is possible to improve the accuracy of treatment by predicting the radiation dose while facilitating access to various environments.

Description

[0001] PHANTOM APPARATUS FOR MEASURING DOSE OF REMOTE RADIATION [0002]

The present invention relates to a phantom device for measuring a remote radiation dose, and more particularly, to a phantom device for measuring a distance radiation dose, which can improve the treatment accuracy by facilitating the measurement of radiation dose and distribution irradiated to a patient from the outside.

Remote radiotherapy and brachytherapy are common methods of radiation therapy for cancer patients. Here, the remote radiotherapy is a treatment for removing cancer cells by irradiating the patient with radiation from the outside of the patient, and the proximal radiation therapy is a treatment for removing cancer cells in the body by inserting a radioisotope into the affected part of the patient's body.

On the other hand, when the radiation irradiated to the affected part is irradiated to a region other than the affected part, unnecessary radioactive coating is caused. In particular, in the case of the remote radiotherapy method, irradiation with the external radiation requires accurate irradiation of the external environment according to the irradiation environment. Accordingly, various researches have been continuously carried out in order to improve the precision of treatment by predicting the dose of radiation irradiated from outside the patient in response to various environments.

-. Korean Patent No. 10-0613244 (Registered Date: August 09, 2006)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and provides a phantom device for measuring a remote radiation dose, It has its purpose.

To achieve the above object, a phantom device for measuring a remote radiation dose includes a measurement unit including a dosimeter and a photoconductor for measuring a dose and a distribution of radiation, and a support unit for supporting the measurement unit to fix the measurement unit.

According to one aspect of the present invention, the measurement unit includes a base plate provided with a plurality of installation grooves in which a plurality of the dosimeters are installed, a cover plate provided with a plurality of cover grooves covering the plurality of dosimeters and covering the base plate, A dose meter, an OSLD (Optically Stimulated Luminescence Dosimeter) dosimeter, and a TLD (Thermoluminescence) detector, which are stacked on the base plate, Dosimeter) and a dosimeter.

According to one aspect of the present invention, the base plate, the cover plate, and the photosensitive plate are formed of a synthetic resin material including acrylic, and are formed to have the same size and fixed postures stacked on one another by the fixing clip.

According to one aspect, the supporting unit includes a supporting portion for supporting the measuring unit, a link portion including at least one link for rotatably supporting the supporting portion, and a fixing portion for fixing the link portion.

According to one aspect of the present invention, the measuring unit is bolted to the support unit, and a level meter is installed in the support unit.

According to one aspect, the link portion is hinge or ball-mounted to the fixing portion, and the fixing portion includes a suction pad.

According to one aspect, the support unit includes a plurality of adsorption pads provided in the measurement unit.

According to one aspect of the present invention, the support unit includes a plurality of suction pads provided on a plurality of support protrusions projecting integrally from the base plate.

A phantom device for measuring a remote radiation dose according to a preferred embodiment of the present invention includes a measuring unit including at least one plate having a dosimeter for measuring a dose and a distribution of radiation and a photoconductor and at least one of a link means and an adsorption means And a support unit which supports the measurement unit and fixes the measurement unit.

According to the present invention having the above-described configuration, first, by supporting and fixing the measurement unit at various places, it becomes possible to measure the dose of radiation without considering the place, and the accessibility of the measurement of the distance radiation dose is improved.

Second, the supporting posture of the measurement unit can be varied in various attitudes using the link, and the response to various environments is excellent.

Third, since the measurement unit can be fixed using the absorption pad provided in the measurement unit, it is easy to install the measurement unit even in a small place.

Fourth, it becomes possible to acquire a radiation dose distribution using a radiation photoreceptor in addition to the radiation dose measurement using a dosimeter, thereby contributing to the improvement of the treatment precision by predicting the radiation dose and distribution from the outside to the patient.

Fifth, since various dosimeters can be applied, it is advantageous to respond to various treatment environments.

1 is a perspective view schematically showing a phantom device for measuring a remote radiation dose according to a first preferred embodiment of the present invention,
FIG. 2 is an exploded perspective view schematically illustrating a phantom device for measuring a remote radiation dose shown in FIG. 1,
Fig. 3 is an exploded perspective view schematically illustrating the measuring unit shown in Fig. 1,
4 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a first embodiment having a MOSFET dosimeter;
5 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a first embodiment having an OSLD dosimeter,
6 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a first embodiment having a TLD dosimeter,
FIG. 7 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a second preferred embodiment of the present invention. FIG.
FIG. 8 is an exploded perspective view schematically illustrating the phantom device for measuring the remote radiation dose shown in FIG. 7,
9 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a second embodiment having a MOSFET dosimeter,
10 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a second embodiment having an OSLD dosimeter,
11 is a plan view and a side view schematically showing a phantom device for measuring a remote radiation dose according to a second embodiment having a TLD dosimeter.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to FIGS. 1 and 2, a phantom device 1 for measuring a remote radiation dose according to a first preferred embodiment of the present invention comprises a measurement unit 10 and a support unit 20.

For reference, the phantom device 1 for measuring a remote radiation dose described in the present invention is a device for managing the quality of a remote radiotherapy apparatus (not shown) for treating a lesion of a patient such as a cancer patient by irradiating the radiation from the outside .

The measuring unit 10 has a dosimeter D1 and a photoconductor F for measuring the dose and distribution of the radiation dose. The measuring unit 10 for this purpose includes a base plate 11, a cover plate 12 and a photosensitive plate 13.

As shown in FIG. 3, the base plate 11 is provided with a plurality of installation grooves 11a in which a plurality of dosimeters D1 are installed. The base plate 11 is formed of a synthetic resin such as acrylic having a density similar to that of a human body. This base plate 11 is shown and exemplified as having a square plate shape having a width and a length of about 100 x 100 mm and a thickness of about 3 mm.

The plurality of installation grooves 11a are formed in a substantially elliptical shape and recessed from the upper surface of the base plate 11. In addition, a plurality of the installation grooves 11a are provided so as to be spaced apart from each other. In the present embodiment, the dosimeters D1 provided with a pair of the installation grooves 11a are guided so as to be arranged in parallel with each other in three rows and three columns, but the present invention is not limited thereto.

Meanwhile, the dosimeter D1 is for measuring a dose of radiation, and in this embodiment, it includes a glass dosimeter formed of silver or cobalt glass. The glass dosimeter D1 has a substantially cylindrical shape and has an installation groove 11a into which the dosimeter D1 is inserted and has a corresponding diameter and length so as to prevent clearance between the installation cavity 11a and the inserted dosimeter D1.

As shown in FIG. 3, the cover plate 12 is provided with a plurality of cover grooves 12a covering a plurality of dosimeters D1 to cover the base plate 11. As shown in FIG. The cover plate 12 has the same size as the base plate 11 described above and is formed of a synthetic resin such as acrylic.

The cover groove 12a has a depth corresponding to the remaining area of the dosimeter D1 partially inserted into the installation groove 11a and is formed by being recessed in the lower surface of the cover plate 12. That is, the cover groove 12a is provided on the lower surface of the cover plate 12 facing the base plate 11, and corresponds to a position corresponding to the installation groove 11a.

According to this construction, the cover plate 12 is laminated on the upper surface of the base plate 11, whereby the dosimeter D 1 is fixed to the base plate 11 and the cover plate 12 a by the installation groove 11 a and the cover groove 12 a. 12 so as not to flow.

For reference, in this embodiment, the base plate 11 and the cover plate 12 are shown as separated from each other for the convenience of installation of the dosimeter D, but the present invention is not limited thereto. For example, the number of the plates can be changed, such that the base plate 11 and the cover plate 12 are formed as one body and the dosimeter D1 is embedded. It is also possible that the cover plate 12 has a size corresponding to the installation groove 11a of the base plate 11 and is inserted into the installation groove 11a to cover only the dosimeter D1.

The photosensitive plate 13 is stacked on the base plate 11 with the cover plate 12 interposed therebetween, and a photoconductor F for acquiring a radiation dose distribution is built in. In the present embodiment, it is exemplified that the photosensitive member F includes a photosensitive film. The photosensitive plate 13 has the same size as the base plate 11 and the cover plate 12 and has a rectangular plate shape formed of synthetic resin such as acryl.

For reference, on the upper surface of the photosensitive plate 13, two center lines L are provided so as to be mutually orthogonal to each other for convenience of installation.

The base plate 11, the cover plate 12 and the photosensitive plate 13 are integrally formed with a fixing clip 14 (see FIG. 1), which are coupled to the edges of the plates 10, 20, Clip). In this embodiment, four fixing claws 14 are provided so that the base plate 11, the cover plate 12, and the photosensitive plate 13 are respectively coupled to the edge portions in the overlapped state. However, Not to mention.

The support unit (20) supports the measurement unit (10) to fix the measurement unit (10). The support unit 20 includes a support portion 30, a link portion 40, and a fixing portion 50.

The support 30 supports the measuring unit 10 as shown in Fig. The supporting unit 30 is bolted to and connected to the measurement unit 10 and the support bolt 31. The support 30 supports the one side edge of the measurement unit 10 and has a support block 32 provided with a support bolt hole 32a into which the support bolt 31 is inserted. Here, the support block 32 is provided with a level meter 33 for checking the level of the supported measurement unit 10.

The link portion 40 includes at least one link 42 (43) for rotatably supporting the support portion 30, as shown in Figs. In the present embodiment, the link portion 40 is connected to the support portion 30 by the connection bolt 41 and includes the first and second links 42 and 43.

One end of the first link 42 is bolted to the support block 32 of the support 30 by the connection bolt 41 and the other end is connected to one end of the second link 43. At this time, the first and second links 42 and 43 are connected to each other by a hinge or a ball-mount. The other end of the second link 43 is rotatably connected to the fixing part 50 by a hinge or a ball-mount. The mounting posture of the measuring unit 10 supported by the supporting portion 30 by the first and second links 42 and 43 can be variously changed.

For reference, in the present embodiment, the link unit 40 includes the first and second links 42 and 43, but is not limited thereto. That is, a modification in which the link portion 40 is interconnected by one link or three or more links is also possible. In addition, another modification is also possible in which the link of the link portion 40 is provided so as to be elastically stretchable in the longitudinal direction, and which can be deformed in length.

The fixing portion (50) fixes the link portion (40). The fixing portion 50 includes a suction pad 51, and is adsorbed and fixed at a desired position. The fixing unit 50 using such an attraction force enables the measurement unit 10 to be installed at various places without regard to a specific place.

According to the above configuration, the measurement unit 10 supported by the support portion 30 is supported by the movement of the link portion 40 after being adsorbed to a specific position by the adsorption pad 51 of the fixing portion 50 The measurement posture is variable. The radiation dose and the position distribution irradiated from the outside to the patient are obtained by the dosimeter D1 and the photoconductor F of the measuring unit 10 while the measuring unit 10 is supported by the supporting unit 20. [

In the first embodiment, the dosimeter D1 is a glass dosimeter, but it can be modified into a simulator as shown in FIGS.

That is, as shown in FIG. 4, the dosimeter D2 may include a MOSFET (Metal Oxide Field Effect Transistor) dosimeter D2. The MOSFET dosimeter D2 uses the characteristic that the resistance changes when the radiation is absorbed, and measures a change in the voltage of the dosimeter D2 according to the resistance change to measure the absorbed radiation dose.

Further, the MOSFET dosimeter D2 is made of a silicon material and has reproducible characteristics. The MOSFET dosimeters D2 extend in the longitudinal direction and are arranged in parallel in the installation groove 11a and the cover groove 12a between the base plate 11 and the cover plate 12, At the end of the dosimeter D2, a sensor S for measuring the dose of radiation is provided. For reference, in FIG. 4, the MOSFET dosimeters D2 are arranged and arranged in parallel with each other in eight rows, but are not limited thereto.

FIG. 5 shows a measurement unit 10 to which an OSLD (Optically Stimulated Luminescence Dosimeter) dosimeter D3 is applied. The OSLD dosimeter D3 measures a radiation dose using a characteristic of emitting light in proportion to a coated dose of radiation. The OSLD dosimeter D3 has a square shape of approximately 11 mm × 11 mm and a thickness of approximately 1.5 to 2 mm. 5, the OSLD dosimeters D30 are installed and covered in the installation grooves 11a and the cover grooves 12a between the base plate 11 and the cover plate 12 in the 7th row and the 7th row in parallel with each other. do.

6, a measurement unit 10 to which a TLD (Thermoluminescence Dosimeter) dosimeter D4 is applied is shown. The TLD dosimeter D4 has a characteristic of a thermoluminescence dosimeter which is proportional to the amount of radiation absorbed by the amount of light generated by heating after the absorption of the fluorescent material and is composed of calcium fluoride (CaF2), lithium fluoride (LiF), calcium sulfate CaSO4), and an oxidized berry room (BeO). The TLD dosimeter D4 has a horizontal and vertical diameter of approximately 6 x 6 mm and a thickness of approximately 1 mm and is provided in 7 rows and 7 rows, spaced apart from one another.

Referring to FIGS. 7 and 8, a phantom device 100 for measuring a remote radiation dose according to a second embodiment of the present invention is shown.

Referring to FIGS. 7 and 8, the phantom device 100 for measuring a remote radiation dose according to the second embodiment includes a measurement unit 110 and a support unit 120.

The measurement unit 110 includes a dosimeter D1 and a photoconductor F to measure a dose of radiation and a position distribution. To this end, the measuring unit 110 includes a base plate 111, a cover plate 112 and a photosensitive plate 113. Here, the base plate 111 and the cover plate 112 are provided with installation grooves 111a and cover grooves 112a and a glass dosimeter D1. The photosensitive plate 113 is provided with a photosensitive member F ). Since the configuration of the measuring unit 110 is similar to that of the first embodiment, a detailed description thereof will be omitted.

For reference, the base plate 111, the cover plate 112, and the photosensitive plate 113 of the measurement unit 110 according to the second embodiment have a rectangular plate shape having horizontal and vertical diameters of approximately 250 mm and 300 mm Respectively. In addition, the base plate 111 and the cover plate 112 each have a thickness of 1.5 mm and the photosensitive plate 113 has a thickness of 3 mm so that the total thickness of the measuring unit 110 is approximately 6 mm. do.

The support unit 120 includes a plurality of absorption pads 121 provided in the measurement unit 110. The adsorption pad 121 is provided on a plurality of support protrusions 122 protruding from the base plate 111 as one body. The support unit 120 can support the measurement unit 110 even in a narrow space such as the lower floor of the patient by using the absorption pad 121. [

On the other hand, in the second embodiment, various dosimetry dosimeters D2, D3, and D4 as well as the glass dosimeter D1 are applicable as in the first embodiment.

That is, as shown in FIG. 9, a metal oxide field effect transistor dose meter D2 may be provided between the base plate 111 and the cover plate 112. These MOSFET dosimeters D2 extend in the longitudinal direction and are provided in seven rows in parallel to each other and are installed in the installation groove 111a and the cover groove 112a between the base plate 111 and the cover plate 112. [ At the end of the MOSFET dosimeter D2, a sensor S for measuring a radiation dose is provided.

10, a measurement unit 110 to which an OSLD (Optically Stimulated Luminescence Dosimeter) dosimeter D3 is applied is shown. The OSLD dosimeter D3 shown in Fig. 10 has the same size as the OSLD dosimeter D3 shown in Fig. 5, and is arranged in a row and a row between the base plate 111 and the cover plate 112, And covers and covers the cover groove 111a and the cover groove 112a.

Referring to FIG. 11, a measurement unit 110 to which a TLD (Thermoluminescence Dosimeter) dosimeter D4 is applied is shown. The TLD dosimeter D4 has the same size as that of the TLD dosimeter D4 described above with reference to FIG. 6, and is provided in six rows and six rows in parallel with each other.

The dosimeters D2, D3, and D4 shown in FIGS. 8 to 11 have the same configurations as those of FIGS. 4 to 6, (120) is also similar to the configuration shown in FIG. 7, so a detailed description thereof will be omitted.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

1, 100: Phantom device for remote dose measurement
D1, D2, D3, D4: Dosimeter F: Photoconductor
10, 110: Measuring unit 11, 111: Base plate
12, 112: cover plate 13, 113: photosensitive plate
20, 120: support unit 30: support
40: link portion 50:

Claims

A measurement unit having a dosimeter and a photoreceptor for measuring a radiation dose and a distribution; And
A support unit for supporting the measurement unit to fix the measurement unit;
And a phantom device for remote dose measurement.

The method according to claim 1,
Wherein the measuring unit comprises:
A base plate provided with a plurality of installation grooves in which a plurality of the dosimeters are installed;
A cover plate having a plurality of cover grooves covering the plurality of dosimeters and covering the base plate; And
A photosensitive plate laminated on the base plate with the cover plate interposed therebetween, the photosensitive plate being provided with the photosensitive member;
/ RTI >
Wherein the dosimeter comprises at least one of a glass dosimeter, a metal oxide field effect transistor (MOSFET) dosimeter, an OSLD (Optically Stimulated Luminescence Dosimeter) dosimeter, and a TLD (Thermoluminescence Dosimeter) dosimeter.

The method according to claim 1,
Wherein the base plate, the cover plate, and the photosensitive plate are made of a synthetic resin material including acrylic, and are formed in the same size and fixed to each other by a fixing clip.

The method according to claim 1,
The support unit includes:
A support for supporting the measurement unit;
A link portion including at least one link for rotatably supporting the support portion; And
A fixing part for fixing the link part to a position;
And a phantom device for measuring a remote radiation dose.

5. The method of claim 4,
The measuring unit is bolted to the support unit,
And a phantom device for measuring a remote radiation dose.

5. The method of claim 4,
The link portion is hinge or ball-mounted to the fixing portion,
Wherein the fixation portion comprises an adsorption pad.

The method according to claim 1,
Wherein the support unit comprises a plurality of adsorption pads provided in the measurement unit.

3. The method of claim 2,
Wherein the support unit comprises a plurality of adsorption pads provided on a plurality of support protrusions projecting integrally from the base plate.

A measuring unit comprising at least one plate having a dosimeter and a photoreceptor for measuring a radiation dose and a distribution; And
A supporting unit having at least one of a link means and an adsorption means for supporting the measurement unit to fix the measurement unit;
And a phantom device for remote dose measurement.

10. The method of claim 9,
Wherein the measuring unit comprises:
A base plate provided with a plurality of the dosimeters;
A cover plate covering the plurality of dosimeters so as not to flow from the base plate; And
A photosensitive plate laminated on the base plate with the cover plate interposed therebetween, the photosensitive plate being provided with the photosensitive member;
/ RTI >
Wherein the dosimeter comprises at least one of a glass dosimeter, a metal oxide field effect transistor (MOSFET) dosimeter, an OSLD (Optically Stimulated Luminescence Dosimeter) dosimeter, and a TLD (Thermoluminescence Dosimeter) dosimeter.

10. The method of claim 9,
Wherein the base plate, the cover plate, and the photosensitive plate are made of a synthetic resin material including acrylic, and are formed in the same size and fixed to each other by a fixing clip.

10. The method of claim 9,
The support unit includes:
A support for supporting the measurement unit and provided with a level meter;
A link portion including at least one link for rotatably supporting the support portion; And
A fixing part connected to the link part by a hinge or a ball-mount to fix the link part to a position;
And a phantom device for measuring a remote radiation dose.

13. The method of claim 12,
Wherein the fixation portion comprises an adsorption pad.

10. The method of claim 9,
Wherein the support unit comprises a plurality of adsorption pads provided in the measurement unit.

11. The method of claim 10,
Wherein the support unit comprises a plurality of adsorption pads provided on a plurality of support protrusions projecting integrally from the base plate.