Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for quickly realizing Gamma analysis method based on GPU (graphic processing unit)

An analysis method and speed technology, applied in the field of Gamma analysis, can solve problems such as time consumption

Inactive Publication Date: 2011-07-13
SICHUAN UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the Gamma analysis method is simple, since the spatial distance between each voxel for calculating the dose is generally greater than the distance error standard, it is easy to produce large deviations when calculating the Gamma factor in the low-dose gradient area. In order to obtain the calculated dose of each refined voxel, it is necessary to perform dose interpolation on its nearest neighbor voxels, which consumes a lot of time in the whole process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quickly realizing Gamma analysis method based on GPU (graphic processing unit)
  • Method for quickly realizing Gamma analysis method based on GPU (graphic processing unit)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Gamma factor at the measurement point is defined as:

[0009] (1)

[0010] in, To calculate the spatial distribution position of the dose:

[0011] (2)

[0012] In the above formula, (3)

[0013] Indicates the spatial distance between the calculation point and the measurement point;

[0014] (4)

[0015] Indicates the difference between the planned calculated dose and the actual measured dose;

[0016] in, is the distance error standard of the isodose point; is the dose error standard; at point The calculated dose at at point The measured dose at .

[0017] In the process of calculating the Gamma factor with the GPU, one thread block corresponds to one voxel, and one thread ID corresponds to one interpolation. The planned calculation dose of the refined voxel is obtained through interpolation, and then the Gamma factor is calculated by the above formula, so that The program that needs to be ex...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for quickly realizing a Gamma analysis method in the posology verification of the radiotherapy treatment planning. Compared with the common method, the method disclosed by the invention has the differences that a GPU (graphic processing unit) is combined to read data, carry out logic processing and output; the GPU is adopted for processing volume element refining existing in the Gamma analysis method process in the posology verification of the radiotherapy treatment planning and processing the process of calculating the Gamma factor based on the refined volume element; and the whole process has the characteristics of large data volume, low data correlation, high degree of parallelism, high computing density and the like, and data have the same executive program. More calculating units simultaneously execute in parallel by the GPU, the operation time is shortened, the efficiency of the Gamma analysis method is higher, and the posology verification speed is improved.

Description

technical field [0001] The invention relates to a Gamma analysis method in dosimetry verification of radiotherapy plan, in particular, to an acceleration technology of Gamma factor calculation in dosimetry verification of radiotherapy plan. Background technique [0002] New technologies such as intensity-modulated radiation therapy (IMRT) have been gradually applied to modern clinical radiation therapy. However, because these new technologies are more complicated to implement, they are prone to various degrees of deviation. Therefore, in order to ensure the safety of patients, dosimetry before treatment Verification is very necessary. [0003] At present, there are many means or methods for the verification of intensity-modulated dosimetry, but there are three main ones: one is absolute dose verification, which refers to measuring the dose at the reference point of the target area in the phantom (usually the isocenter of the radiation field) Compared with the dose of the re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F19/00
Inventor 刘乐乐侯氢勾成俊吴章文
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com