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Digital human body modeling method for assigning density, constituent by CT value

A composition and human body modeling technology, applied in the field of digital human body modeling, can solve problems such as not being able to truly reflect the human body

Inactive Publication Date: 2009-06-17
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to aim at the shortcomings of the existing digital human body modeling method that cannot truly reflect the actual anatomical structure of the human body, and propose a digital human body modeling method that uses CT values ​​to endow density and composition. The present invention obtains After the CT film / color photo of the same human body, the color photo is segmented to identify each organ or tissue of the human body; the density and composition of the organ or tissue are determined by the CT value in the CT film after registration with the color photo. The mathematical conversion of

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  • Digital human body modeling method for assigning density, constituent by CT value
  • Digital human body modeling method for assigning density, constituent by CT value
  • Digital human body modeling method for assigning density, constituent by CT value

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Embodiment Construction

[0027] see figure 1 , figure 2 .

[0028] Utilize CT value to endow the digital human body modeling method of density, composition: comprise the following steps:

[0029] (1) Segment and identify the various organs and tissues of the human body

[0030] When obtaining human body tomographic image data, data in two formats of CT slices and color photos are collected at the same time; due to the high resolution of color photos, relatively accurate segmentation of organs and tissues can be achieved. Various important organs and tissues of the human body are manually outlined on color photos and filled with different colors. In this way, geometric information such as the shape, size, and position in the human body of various organs and tissues is obtained.

[0031] (2) Registration of CT films and color photos

[0032] Because the resolutions of CT films and color photos are different, their pixels are not in one-to-one correspondence. When using the two kinds of data to bui...

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Abstract

The invention discloses a digital body modeling method for using CT values to endow density and composing components, comprising: after obtaining a colorful picture and a CT film of human body, registering and dividing the colorful picture, marking important organs or tissues of human body; converting the CT values of the CT film after colorful picture registration, to obtain the density and composing components of the organs or tissues. The inventive digital body model can actually represent the three-dimension geometric information of human body, and can actually represent the internal anatomical structure of human body, which can be used to evaluate body radiation dose in nuclear medicine and radiation protection fields.

Description

technical field [0001] The invention relates to a digital human body modeling method, in particular to a digital human body modeling process and a method for assigning density and components. Background technique [0002] The digital human body model, referred to as the digital human, is a human body model that reflects the three-dimensional anatomical structure constructed by using medical imaging CT / MRI / color photo data through computer technology, and is mainly used in the fields of nuclear medicine and radiation protection. The assessment of human radiation dose is one of the important tasks of nuclear medicine and radiation protection. In actual work, due to the limitations of objective conditions such as time, site, and detectors, direct measurement is often impossible or inconvenient. The development of digital human body model provides a new method for the research of radiation protection and nuclear medicine. In addition, digital human body model will also be widel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T15/00
Inventor 程梦云吴宜灿黄群英陈朝斌宋钢曹瑞芬
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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