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Maximum dose point optimization method and device, electronic equipment and storage medium

A technology of maximum dose and optimization method, applied in the field of radiotherapy, it can solve problems such as limited application scope and inability to optimize the maximum dose point, and achieve the effect of improving efficiency and accuracy

Pending Publication Date: 2020-04-10
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the position adjustment method of the maximum dose point in the prior art requires the doctor to try to adjust the constraints many times and add multiple auxiliary structures, which cannot automatically optimize the maximum dose point, and requires the doctor to have more experience, and the scope of application is limited

Method used

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  • Maximum dose point optimization method and device, electronic equipment and storage medium
  • Maximum dose point optimization method and device, electronic equipment and storage medium
  • Maximum dose point optimization method and device, electronic equipment and storage medium

Examples

Experimental program
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Embodiment 1

[0029] figure 1 It is a schematic flow chart of a maximum dose optimization method provided by Embodiment 1 of the present invention. This embodiment can be applied to automatically determine the maximum dose area, and automatically determine the maximum dose value that does not belong to the target area on the basis of determining the maximum dose area. In the case of adjustment, the method can be executed by the maximum dose optimization device, wherein the device can be realized by software and / or hardware, and generally integrated in the terminal. For details, see figure 1 As shown, the method may include the following steps:

[0030] S110. Acquire an initial maximum dose area.

[0031] Wherein, the initial maximum dose area can be understood as the area where the maximum prescription dose before optimization is located in the radiotherapy plan, that is, the unoptimized radiotherapy target area. It can be understood that the initial maximum dose area may be manually det...

Embodiment 2

[0050] image 3 It is a schematic flowchart of a maximum dose optimization method provided in Example 2 of the present invention. The technical solution of this embodiment refines the foregoing embodiments. Optionally, the determining the target area according to the initial maximum dose area, the first area, and the second area includes: calculating the volume of the second area as a percentage of the initial maximum dose area A first ratio of volume; if the first ratio exceeds a set threshold, the second area is used as the target area. For the parts not described in detail in the method embodiment, please refer to the above embodiment. For details, see image 3 As shown, the method may include the following steps:

[0051] S310. Acquire an initial maximum dose area.

[0052] S320. Determine at least one first area where the protection area overlaps with the initial maximum dose area, and determine a second area in the initial maximum dose area except the first area.

...

Embodiment 3

[0064] Figure 5 It is a schematic flowchart of a maximum dose optimization method provided in Example 3 of the present invention. The technical solution of this embodiment refines the foregoing embodiments. Optionally, the determining the target area according to the initial maximum dose area, the first area, and the second area includes: calculating a second ratio of any sub-area to the initial maximum dose area ; If the second ratio of any of the sub-regions does not exceed the set threshold, determine the third ratio of the first region to the initial maximum dose region; if the third ratio does not exceed the set threshold A threshold is determined, and the second area is used as the target area. For the parts not described in detail in the method embodiment, please refer to the above embodiment. For details, see Figure 5 As shown, the above S130 may include the following steps:

[0065] S1301. Calculate a second ratio of any sub-region to the initial maximum dose r...

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Abstract

The embodiment of the invention discloses a maximum dose point optimization method and device, electronic equipment and a storage medium. The method comprises the steps: acquiring an initial maximum dose area; determining a first area where the at least one protection area is overlapped with the initial maximum dose area, determining a second area except the first area in the initial maximum dosearea, and determining a target area according to the initial maximum dose region, the first region and the second region, thereby achieving the automatic determining of the target area; acquiring a first maximum dose value of the target area and a second maximum dose value of a non-target area; performing dose adjustment on a voxel point corresponding to the second maximum dose value greater thanthe first maximum dose value based on a preset dose adjustment rule, thereby solving the problem that doctors need to have more experiences to optimize the maximum dose point in the prior art, achieving the purposes of automatically determining the target area and automatically optimizing the maximum dose point, and achieving the effect of improving the optimization efficiency and accuracy of themaximum dose point.

Description

technical field [0001] Embodiments of the present invention relate to radiotherapy technology, and in particular to a method, device, electronic equipment and storage medium for optimizing a maximum dose point. Background technique [0002] In recent years, radiation therapy is one of the main treatments for malignant tumors. When doctors use the Radiotherapy Treatment Planning System (TPS) to check and approve the radiation therapy plan, they usually check the position of the maximum dose point in the plan. Check and confirm. Generally, the position of the allowable maximum dose point should be located within the volume of the maximum prescribed dose target area, and the position should not be within the organ-at-risk volume. In the critical organ at risk (Organ Art Risk, OAR for short), the plan usually does not allow to be irradiated, because it will cause greater harm to the patient. [0003] In this regard, when optimizing the position of the TPS maximum dose point in...

Claims

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Application Information

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IPC IPC(8): G16H20/40G16H50/20G06K9/32A61N5/10
CPCG16H20/40G16H50/20A61N5/1031G06V10/25G06V2201/03Y02T10/40
Inventor 张康
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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