CN113101545A - Radiotherapy simulation positioning system - Google Patents
Radiotherapy simulation positioning system Download PDFInfo
- Publication number
- CN113101545A CN113101545A CN202110375730.XA CN202110375730A CN113101545A CN 113101545 A CN113101545 A CN 113101545A CN 202110375730 A CN202110375730 A CN 202110375730A CN 113101545 A CN113101545 A CN 113101545A
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- positioning
- image
- radiotherapy
- simulated
- positioning system
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 18
- 238000004088 simulation Methods 0.000 title claims abstract description 13
- 238000012795 verification Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 206010028980 Neoplasm Diseases 0.000 claims abstract description 8
- 238000003745 diagnosis Methods 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 3
- 238000012879 PET imaging Methods 0.000 claims description 2
- 238000013170 computed tomography imaging Methods 0.000 claims description 2
- 230000004807 localization Effects 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 239000003026 cod liver oil Substances 0.000 description 1
- 235000012716 cod liver oil Nutrition 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1052—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using positron emission tomography [PET] single photon emission computer tomography [SPECT] imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1054—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using a portal imaging system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1061—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an x-ray imaging system having a separate imaging source
- A61N2005/1062—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an x-ray imaging system having a separate imaging source using virtual X-ray images, e.g. digitally reconstructed radiographs [DRR]
Abstract
The radiotherapy simulated positioning system usually marks reference points, scans positioning images, delineates tumors in a radiotherapy planning system, determines isocenters, moves a bed and a laser lamp to the isocenters during resetting, marks body surfaces and scans verification images. The above procedure typically requires two fixed patient's, two image scans "to be" positioned "and" reset ". The invention discloses a simulation positioning system which automatically maps a tumor sketch drawn in advance on a diagnostic image to a positioning image through a deformation registration algorithm, directly marks and verifies an isocenter and improves the working efficiency.
Description
Technical Field
Radiotherapy simulation positioning.
Background
The radiotherapy simulated positioning system usually marks reference points during positioning, scans positioning images, delineates tumors and determines isocenters in a radiotherapy planning system, moves a bed and a laser lamp to the isocenter position during resetting, marks the body surface and scans verification images. Because of the long time required to delineate the tumor, the "positioning" and "repositioning" procedures described above are usually separate, requiring two fixation patients and two image scans. The workload of the doctor is increased, and simultaneously, the inconvenience is brought to the patient. In the case of performing the isocenter transfer every time the accelerator treatment couch is moved, there is a risk of a bed transfer error.
Disclosure of Invention
The invention relates to a radiotherapy simulation positioning system, which is characterized by comprising an imaging device, a movable laser lamp and simulation positioning software; the imaging device is a CT, MR or PET/CT imaging device; the simulated positioning software comprises a method for automatically driving a movable laser lamp to an isocenter position, and the method comprises the following steps:
1) importing a diagnostic image and a diagnostic sketch; the diagnosis delineation can be a tumor target area delineated on the diagnosis image or an isocenter directly preset on the diagnosis image.
2) The diagnostic image is deformed and registered with the positioning image;
3) mapping the diagnosis delineation to a positioning image according to a deformation field generated by deformation registration to generate a corresponding positioning image delineation;
4) the isocenter position is calculated according to the positioning image drawing; when the diagnosis delineation is the delineation of the tumor target area, generating a corresponding positioning target area delineation on the positioning image, and calculating the geometric center of the positioning target area delineation as a default isocenter position; when the diagnostic delineation is a preset isocenter, the mapped isocenter is generated directly on the positioning image.
5) The bed and laser lamp are driven to an isocentric position.
The doctor can mark the isocenter position according to the indication of the laser lamp. If the isocenter position of the mark needs to be verified, a marker is attached to the mark point (a lead point can be used for a CT image, and a cod-liver oil ball can be used for an MR image), and verification image scanning is carried out. The simulated localization software includes a means for marking the isocenter of the verification image with markers as described above. The marking tool can be a manual marking tool, such as a cross line moving with a mouse, when a horizontal line passes through the left marking point and the right marking point and a vertical line passes through the upper marking point, the marking position of the mouse is the isocenter. The marking tool may also be an automatic marking tool, such as automatically segmenting marking points on the verification image, automatically calculating the isocenter position. The simulation positioning software aligns the isocenter of the verification image with the isocenter of the positioning image, and then performs rigid body registration on the verification image and the positioning image to generate registration deviation so as to verify the positioning precision.
The radiotherapy simulation positioning system omits the mark of a reference point, can directly finish the marking of the isocenter in positioning, and improves the working efficiency.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example 1
The present invention will be described in further detail with reference to examples, which are not intended to limit the scope of the present invention.
The radiotherapy simulation positioning system comprises imaging equipment, a movable laser lamp and simulation positioning software; the imaging device in this embodiment is a large aperture CT; the simulated positioning software comprises a method for automatically driving a movable laser lamp to an isocenter position, and the method comprises the following steps:
1) importing a diagnostic image and a diagnostic sketch; the diagnostic image is a diagnostic CT image and the diagnostic delineation is a tumor target region delineated on the diagnostic image.
2) The diagnostic image is deformed and registered with the positioning image; the scout image is a CT image generated by a large aperture CT scan. The deformation registration algorithm is a gradient field-based deformation registration method for the constrained images.
3) Mapping the diagnosis target area to a positioning image according to a deformation field generated by deformation registration to generate a corresponding positioning target area;
4) calculating a geometric center delineated by the positioning target area as a default isocenter position;
5) the bed and laser lamp are driven to an isocentric position.
The doctor can mark the isocenter position according to the indication of the laser lamp. If the isocenter position of the mark needs to be verified, a lead point is attached to the mark point to serve as a CT image verification mark. After the marker is attached, a verification image scan is performed. The simulated localization software includes a means for marking the isocenter of the verification image with markers as described above. The marking tool comprises a manual marking tool and a cross line moving along with the mouse, and when a horizontal line penetrates through the left marking point and the right marking point and a vertical line penetrates through the upper marking point, the marking position of the mouse is the isocenter. The marking tool also comprises an automatic marking tool, which automatically segments the marking points on the verification image and automatically calculates the isocenter position according to the marking points. The simulation positioning software aligns the isocenter of the verification image with the isocenter of the positioning image, and then performs rigid body registration on the verification image and the positioning image to generate registration deviation so as to verify the positioning precision.
Claims (8)
1. A radiotherapy simulation positioning system is characterized by comprising an imaging device, a movable laser lamp and simulation positioning software; the simulated positioning software comprises a method for automatically driving a movable laser lamp to an isocenter position, and the method comprises the following steps:
importing a diagnostic image and a diagnostic sketch;
the diagnostic image is deformed and registered with the positioning image;
mapping the diagnosis sketch to a positioning image to generate a corresponding positioning image sketch;
the isocenter position is calculated according to the positioning image drawing;
the bed and laser lamp are driven to an isocentric position.
2. A radiotherapy simulated positioning system according to claim 1, wherein the imaging device is a CT, MR or PET/CT imaging device.
3. The simulated radiotherapy positioning system of claim 1, wherein the diagnostic delineation is a tumor target delineation.
4. The simulated positioning system for radiotherapy of claim 1, wherein the diagnostic delineation is an isocenter delineation.
5. A simulated positioning system for radiotherapy as claimed in claim 1, wherein the simulated positioning software comprises means for marking the isocenter of the verification image.
6. A simulated positioning system for radiotherapy as claimed in claim 1, wherein the simulated positioning software registers the verification image with the positioning image.
7. The simulated positioning system for radiotherapy as claimed in claim 1, wherein the simulated positioning software stores the positioning image to the server.
8. A simulated positioning system for radiotherapy as claimed in claim 1, wherein the simulated positioning software stores the positioning image in a server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375730.XA CN113101545A (en) | 2021-04-08 | 2021-04-08 | Radiotherapy simulation positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375730.XA CN113101545A (en) | 2021-04-08 | 2021-04-08 | Radiotherapy simulation positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113101545A true CN113101545A (en) | 2021-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110375730.XA Pending CN113101545A (en) | 2021-04-08 | 2021-04-08 | Radiotherapy simulation positioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113101545A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113893466A (en) * | 2021-11-16 | 2022-01-07 | 四川省肿瘤医院 | Method for determining CT positioning center |
| CN115671579A (en) * | 2022-10-31 | 2023-02-03 | 大连大学附属中山医院 | Image-guided radiotherapy simulation positioning system and method |
Citations (5)
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|---|---|---|---|---|
| US20150031932A1 (en) * | 2013-07-24 | 2015-01-29 | Nanjing Chengda MedicalTechnology Co., Ltd. | Method to Accurately and Rapidly Locate Tumor |
| CN108852400A (en) * | 2018-07-02 | 2018-11-23 | 沈阳东软医疗系统有限公司 | A kind of method and device for realizing therapeutic community's location verification |
| CN109568811A (en) * | 2018-11-29 | 2019-04-05 | 太丛信息科技（上海）有限公司 | A method of the radiotherapy group establishment of coordinate system based on body surface optical imagery |
| CN109615642A (en) * | 2018-11-05 | 2019-04-12 | 北京全域医疗技术有限公司 | Jeopardize the automatic delineation method of organ and device in a kind of radiotherapy planning |
| CN109771850A (en) * | 2019-02-02 | 2019-05-21 | 上海赛提菲克医疗器械有限公司 | A kind of adaptive radiotherapy planning modification method |
-
2021
- 2021-04-08 CN CN202110375730.XA patent/CN113101545A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150031932A1 (en) * | 2013-07-24 | 2015-01-29 | Nanjing Chengda MedicalTechnology Co., Ltd. | Method to Accurately and Rapidly Locate Tumor |
| CN108852400A (en) * | 2018-07-02 | 2018-11-23 | 沈阳东软医疗系统有限公司 | A kind of method and device for realizing therapeutic community's location verification |
| CN109615642A (en) * | 2018-11-05 | 2019-04-12 | 北京全域医疗技术有限公司 | Jeopardize the automatic delineation method of organ and device in a kind of radiotherapy planning |
| CN109568811A (en) * | 2018-11-29 | 2019-04-05 | 太丛信息科技（上海）有限公司 | A method of the radiotherapy group establishment of coordinate system based on body surface optical imagery |
| CN109771850A (en) * | 2019-02-02 | 2019-05-21 | 上海赛提菲克医疗器械有限公司 | A kind of adaptive radiotherapy planning modification method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113893466A (en) * | 2021-11-16 | 2022-01-07 | 四川省肿瘤医院 | Method for determining CT positioning center |
| CN115671579A (en) * | 2022-10-31 | 2023-02-03 | 大连大学附属中山医院 | Image-guided radiotherapy simulation positioning system and method |
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