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Radiotherapy dose evaluation system and device and storage medium

An evaluation system and dose technology, applied in the field of radiotherapy, can solve the problems of dose evaluation error, short segmentation time, affecting the quality of patient treatment, etc., to achieve the effect of assisting dose determination and improving the accuracy of use

Active Publication Date: 2020-04-14
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Radiation therapy is characterized by low radiation doses per fraction, shorter fractionation times, and repeated treatments, while during a single radiation session there are many factors that can cause discrepancies between the prescribed radiation dose distribution and the actual dose delivered. Differences, such as errors in patient positioning, possible physiological changes such as swelling and degeneration, weight loss, and organ movement, etc. These uncertainties will affect the quality of patient treatment
[0004] In order to ensure the quality of the treatment plan, it is necessary to make the actual dose distribution received by the patient consistent with the prescribed dose distribution, but there are a lot of errors in the current dose assessment process, and the dose assessment is inaccurate

Method used

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  • Radiotherapy dose evaluation system and device and storage medium
  • Radiotherapy dose evaluation system and device and storage medium

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Embodiment 1

[0025] figure 1 This is a schematic flowchart of steps performed by a processor in a radiation therapy dose assessment system according to Embodiment 1 of the present invention, and this embodiment can be applied to the situation of radiation radiation dose assessment. The steps performed by the processor specifically include the following:

[0026] S110: Acquire image data of the target object, perform descattering processing and back-projection processing on the image data, and generate an initial flux map under each subfield of the current treatment.

[0027] S120. Determine a weight map based on the initial flux map.

[0028] S130. Input the weight map to the dose calculation system, and output the absorbed dose of the target object in the current treatment.

[0029] In this embodiment, the image data of the target object, that is, the radiotherapy image, is collected by the electronic portal imaging device. Among them, the target object can be said to be the part to be...

Embodiment 2

[0052] figure 2 This is a schematic structural diagram of a radiotherapy dose assessment device provided in the second embodiment of the present invention. The device can be configured in the processor of a radiotherapy dose assessment system, and the device includes:

[0053] an image data acquisition module 210, configured to acquire image data of the target object;

[0054] an initial flux map generation module 220, configured to perform de-scattering and back-projection processing on the image data to generate an initial flux map under each subfield of the current treatment;

[0055] a weight map determination module 230, configured to determine a weight map based on the initial flux map;

[0056] The absorbed dose determination module 240 is configured to input the weight map into a dose calculation system, and output the absorbed dose of the target object in the current treatment.

[0057] Optionally, the image data acquisition module 210 is used for:

[0058] Obtain...

Embodiment 3

[0081] Embodiment 3 of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, implements a radiation dose assessment method provided by the embodiment of the present invention, and the method includes:

[0082] Obtain image data of the target object, perform descattering processing and back-projection processing on the image data, and generate an initial flux map under each subfield of the current treatment;

[0083] determining a weight map based on the initial flux map;

[0084] The weight map is input into a dose calculation system, and the absorbed dose of the target object in the current treatment is output.

[0085] Of course, the computer program stored on the computer-readable storage medium provided by the embodiment of the present invention is not limited to the above method operations, and can also execute the relevant procedures in the radiation dose assessme...

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Abstract

The invention discloses a radiotherapy dose evaluation system and a device and a storage medium. The radiotherapy dose evaluation system comprises a processor, and configuration and execution steps are as follows: obtaining image data of a target object, carrying out the scattering removal treatment and back projection treatment on the image data, and generating an initial flux graph under each sub-field of the current treatment; determining a weighted graph based on the initial flux graph; and inputting the weighted graph into a dose calculation system, and outputting the absorbed dose of thetarget object in the current treatment. The radiotherapy dose evaluation system provided by the embodiment of the invention can perform high-precision evaluation on the absorbed dose of the target object in each radiotherapy process, can be used for assisting dose determination of clinical radiotherapy, and improves the use accuracy of the radiotherapy dose.

Description

technical field [0001] Embodiments of the present invention relate to radiotherapy technology, and in particular, to a radiotherapy dose assessment system, device and storage medium. Background technique [0002] Radiosurgery and radiotherapy treatment systems work by delivering prescribed doses of radiation to the anatomy of a case while minimizing radiation exposure to surrounding tissues and vital anatomical structures. [0003] Radiation therapy is characterized by low radiation doses per fraction, shorter fractionation times, and repeated treatments, and during a single radiation therapy session, there are many factors that can cause differences between the prescribed radiation dose distribution and the actual dose delivered. Differences in patient positioning, such as errors in patient positioning, possible physiological changes such as swelling and weight loss, and organ movement, etc., these uncertainties will affect the quality of patient treatment. [0004] In ord...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/103A61N5/1031A61N2005/1034
Inventor 刘艳芳张士权
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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