Online radiotherapy plan quality control software

Abstract

The invention discloses online radiotherapy plan quality control software which comprises a DVH prewarning value template setting interface, a data read-in interface, a radiotherapy plan DVH prewarning value setting interface, a sketching and integration interface, a plant evaluation interface, an online adjustment interface, an image deformation registration algorithm, an online plan modification algorithm and a dosage calculation algorithm. A fusion image is generated through an original image and an online image, a target section is described, the endangered organ profile is subjected to online sketching, based on this, dosage calculation is conducted, DVH is generated, comparison with the DVH prewarning value set by a doctor is conducted, online evaluation and adjustment of a radiotherapy plan are achieved, and precise application of the radiotherapy plan is guaranteed.

Description

technical field [0001] The invention relates to an online radiotherapy planning quality control software, which generates fusion images and online outlines describing target areas and endangered organs through imported original images and online images, and then uses the generated dose volume histogram (DoseVolumeHistogram, DVH) information Compared with the pre-set DVH warning value, the purpose of online radiotherapy planning quality control is finally achieved. Background technique [0002] Radiation therapy is one of the important means of tumor treatment. With the application of three-dimensional conformal and intensity-modulated radiotherapy planning, the edge of the target volume usually has a "steep" dose drop, which improves the quality of radiotherapy planning, but also means that small differences in planning and treatment may cause partial target failure. The area is separated from the high-dose area, or the adjacent organs at risk are exposed to excessive radia...

AI Technical Summary

Problems solved by technology

However, in the actual radiotherapy process, in addition to the positioning error, there are also changes in the position and shape of the tumor and its surrounding vital organs that affect the accuracy of radiotherapy

These changes can be divided into two categories. One category reflects changes between different treatment sessions, such as changes caused by organ filling and tumor regression; the other category reflects changes within treatment sessions, such as respiratory movement, gastrointestinal motility, etc. These two types of changes will cause differences between the dose distribution in the actual treatment and the dose distribution in the radiotherapy plan, which will affect the accuracy of radiotherapy

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