Title:
医用画像に基づく組織元素質量比率の脱構築方法及び幾何的モデルの構築方法
Document Type and Number:
Japanese Patent JP6938646
Kind Code:
B2
Abstract:
The present disclosure provides a process for analyzing elements and mass ratios of elements of a tissue and a method for establishing a geometric model based on a medical image. The process for analyzing elements and mass ratios of elements of a tissue includes approximating the tissue having unknown elements and mass ratios of the unknown elements thereof using the data of the medical image corresponding to a tissue having known elements and mass ratios of the known elements thereof. The method for establishing a geometric model includes: reading data of the medical image; defining a type of a tissue according to a conversion relationship between the data of the medical image and tissue types or according to the process; determining a quantity of tissue clusters of the tissue; defining a tissue density of the tissue by a conversion relationship between the data of the medical image and density values; establishing a 3D coding matrix with information about the tissue and the tissue density; and generating the geometric model. By using the medical image data of the known tissues to analyze the elements and mass ratios of elements of a living tissue, the voxel phantom is more realistic to the real situation when made, thereby improving the accuracy of the dose calculation to improve the quality of treatment.
Inventors:
Liu Takashi Go
Xiao Mingcheng
Xiao Mingcheng
Application Number:
JP2019537223A
Publication Date:
September 22, 2021
Filing Date:
July 13, 2017
Export Citation:
Assignee:
Neuboron Medtech Ltd.
International Classes:
A61N5/10; A61B6/03
Domestic Patent References:
| JP2012088771A | ||||
| JP2010172427A | ||||
| JP2014046211A |
Foreign References:
| US20150154374 | ||||
| CN104267425A |
Other References:
Vanderstraeten B. et al.,"Conversion of CT numbers into tissue parameters for Monte Carlo dose calculations: a multi-centre study",Physics in Medicine and Biology,2007年01月05日,vol.52, no.3,pp.539-562
Schneider W. et al.,"Correlation between CT numbers and tissue parameters needed for Monte Carlo simulations of clinical dose distributions",Physics in Medicine and Biology,2000年,vol.45,pp.459-478
Schneider W. et al.,"Correlation between CT numbers and tissue parameters needed for Monte Carlo simulations of clinical dose distributions",Physics in Medicine and Biology,2000年,vol.45,pp.459-478
Attorney, Agent or Firm:
Murai Koji
Soichiro Koide
Soichiro Koide