Dose-guided precise radiotherapy real-time verification system

Abstract

The invention discloses a dose-guided precise radiotherapy real-time verification system, which mainly comprises a patient data management module, a three-dimensional dose reconstruction module and adose evaluation module which are connected successively; the patient data management module is used for obtaining a radiotherapy patient data set from a radiotherapy information management system andproviding data input for the functional module of the system; the three-dimensional dose reconstruction module implements the scattering correction of a patient cone beam CT image, field transmissionimage acquisition, real-time dose calibration, and three-dimensional dose reconstruction functions; the dose evaluation module provides a dose assessment method and a result visualization function, and a user selects a two-dimensional dose assessment or a three-dimensional dose assessment as needed to provide decision-making data for a radiation therapist to perform subsequent fractional treatmentand plan correction. The dose-guided precise radiotherapy real-time verification system uses modular design, and uses a dose-guided radiotherapy plan to perform precise and real-time quality controltreatment, thereby achieving a precise coincidence of the therapeutic dose and the planned dose.

Description

technical field [0001] The invention relates to the technical field of precision radiotherapy planning and control systems in multidisciplinary interdisciplinary fields such as nuclear physics, nuclear technology and its application, and radiology, and in particular relates to a real-time verification system for dose-guided precision radiotherapy. Background technique [0002] In the equipment development of traditional radiotherapy-related systems, there is a lack of real-time online three-dimensional dose verification for radiotherapy and the technical design and development of quality control systems, which makes it difficult for existing equipment to ensure that the treatment dose is accurately consistent with the planned dose. [0003] The currently used film dose verification system, which sandwiches the film in equivalent water or a simple phantom for two-dimensional dosimetry verification, is an in vitro dose verification method before or after radiotherapy, because t...

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Problems solved by technology

[0002] In the equipment development of traditional radiotherapy-related systems, there is a lack of real-time online three-dimensional dose verification for radiotherapy and the technical design and development of quality control systems, which makes it difficult for existing equipment to ensure that the treatment dose is accurately consistent with the planned dose.

[0003] The currently used film dose verification system, which sandwiches the film in equivalent water or a simple phantom for two-dimensional dosimetry verification, is an in vitro dose verification method before or after radiotherapy, because the film cannot be placed on the patient. Three-dimensional dosimetry verification is carried out in vivo, so it cannot guarantee that the therapeutic dose received in the body is consistent with the planned dose; in addition, due to the slow film reading speed, large measurement error, lack of online dose calculation, online dose verification and control, it cannot be guaranteed Accuracy of Therapeutic Dosing

At present, there is also a dose verification system using a matrix ionization chamber and a penetration ionization chamber, which can realize the dose verification method before or after radiotherapy using uniform water or a simple phantom, but this technology cannot perform online dose calculation and online dose calculation. Verification and control, therefore, the accuracy of the therapeutic dose cannot be guaranteed

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