Ultra-long-target-region multi-center volumetric intensity-modulated arc radiation therapy verification die body and method

Abstract

The invention provides an ultra-long-target-region multi-center volumetric intensity-modulated arc radiation therapy verification die body and method. A comparison analysis is carried out on dose distribution obtained by measurement of multi-center ultra-long-radiation-field volumetric intensity-modulated arc radiation therapy and dose distribution obtained by planning to verify accuracy of multi-center ultra-long-radiation-field volumetric intensity-modulated arc radiation therapy plan transmission, especially an error of multi-center transmission dose. According to the invention, on the basis of dose verification on the ultra-long-target-region multi-center volumetric intensity-modulated radiation therapy plan, feasibility of the volumetric intensity-modulated radiation therapy technology for a total-brain or total-spinal ultra-long-target-region is exploited, so that the treatment efficiency and treatment accuracy of total-brain or total-spinal ultra-long-target-region patients areimproved, the radiation therapy complication occurrence is reduced, and the living quality of the patient is improved.

Description

technical field [0001] The invention relates to a super-long target area multi-center volume intensity modulated arc radiotherapy dose verification phantom and method. Background technique [0002] With the continuous development of precision radiotherapy, intensity-modulated radiotherapy has become the main method for the treatment of most malignant tumors. Among them, the volume-modulated arc radiotherapy technology is a dynamic rotating intensity-modulated radiotherapy technology, which is continuously rotated on the gantry. During the process, the optimal dosimetric distribution is achieved by changing the dose rate of the beam, the shape of the multi-leaf grating and the rotation speed. It has the advantages of fast treatment speed, short time, and easy tolerance of critically ill patients, so it has been widely used in clinical practice. [0003] In every link from the design of the patient's treatment plan to the implementation of the treatment, certain errors will oc...

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Problems solved by technology

(2) Algorithm error: The current dose algorithm, whether it is the convolution algorithm of PHILIPS pinnacle, or the super iterative and fast Fourier convolution of CMS XIO, and the most accurate Monte Carlo algorithm at present, all have a certain range of calculation errors.

[0011] At present, there are no verification phantoms and equipment for ultra-long target areas such as the whole brain and spinal cord in the market, especially verification methods for multi-center volumetric intensity-modulated arc radiation therapy for ultra-long target areas such as the whole brain and spinal cord.

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