Radiotherapy dosage rapid quantitative method

A radiation therapy and dose technology, applied in the directions of X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of complicated calculation method, error-prone and time-consuming, etc.

Inactive Publication Date: 2016-02-03
金乔 +3
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Problems solved by technology

[0005] In order to overcome the cumbersome, time-consuming and error-prone problems of the radiotherapy prescription calculation method in the prior art, the present invention provides a r

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with examples.

[0017] A rapid quantitative method for radiotherapy dose, comprising the following steps:

[0018] Step 1: Store the accelerator data in the database according to the energy level, and each energy level contains corresponding data including total scattering factor Scp, collimator scattering factor SC, wedge factor Fw, tray factor Ft, percentile depth dose PDD, and tissue maximum dose ratio TMR;

[0019] Step 2: Set the field size m and depth dose n of the radiotherapy dose to be calculated;

[0020] Step 3: Look up two data points m1 and m2 adjacent to the field size m in step 2 and two data points n1 and n2 adjacent to the depth dose n from the database to obtain PDD(m1, n1), PDD(m2 , n1), PDD(m1, n2) and PDD(m1, n2);

[0021] Step 4: Using the known PDD data obtained in Step 3, calculate and obtain the PDD(m, n) set in Step 2 by using a linear interpolation algorithm.

[0022] Wh...

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Abstract

The invention discloses a radiotherapy dosage rapid quantitative method, comprising the steps of: step 1, storing accelerator data in a database according to energy grades; step 2, setting the field size m and depth dose n of radiotherapy dosage to be calculated; step 3, looking up two data points m1 and m2 adjacent to the field size m, and two data points n1 and n2 adjacent to the depth dose n in step 2 in the database to obtain corresponding PDD data; and step 4, utilizing the PDD data obtained in step3, and employing a linear interpolation algorithm to calculate PDD (m,n) set in step 2. Compared with a hand computation method, the method of the invention has an input time less than one minute, and can rapidly obtain an accurate dosage result through a computer; a user can rapidly obtain a result by only inputting parameters to be calculated, thereby greatly facilitating doctor operation, and realizing higher precision than hand computation.

Description

technical field [0001] The invention relates to a rapid quantitative method for radiotherapy dose. Background technique [0002] Radiation therapy is one of the three major means of tumor treatment. However, ordinary radiotherapy is still an indispensable technology in clinical radiotherapy because of its wide range of applications and low treatment cost. Doctors in hospitals with ordinary radiotherapy technology need to locate patients and formulate radiotherapy plans, and prescription dose calculation is a routine part of their work. [0003] The so-called prescription dose calculation is that the doctor calculates the output dose of the treatment machine based on the positioning data of the tumor patient and the radiation dose required for the lesion. The completion of this work requires consulting a large number of machine data sheets, which contain the depth dose table (pDD, TMR) of the currently positioned field, the scattering factor table (sc, sp), and the attenuat...

Claims

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Application Information

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IPC IPC(8): A61N5/10
Inventor 金乔宁徐彷
Owner 金乔
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