Regions of interest tracking in temporal scans based on statistical analysis of gray scale and edge properties and registration of images

被引：2

作者：

Saeed, N ^{[1
]}

Hajnal, JV ^{[1
]}

Oatridge, A ^{[1
]}

Young, IR ^{[1
]}

机构：

[1] Hammersmith Hosp, Robert Steiner Magnet Resonance Unit, London W12 0HS, England

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1998年 / 8卷 / 01期

关键词：

MRI; region of interest tracking; image registration; temperature measurement;

D O I：

10.1002/jmri.1880080131

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Precise measurement of T1 is needed for its use in temperature monitoring in vivo. Movement of tissue relative to fixed regions of interest can result in large variations in apparent T1, with consequent substantial errors in the measured temperature. This paper evaluates methods of tracking regions of interest as tissue moves during a study in an effort to minimize errors from this cause, Tracking techniques evaluated are based on maintaining constant gray scale levels, locating nearby edges and maintaining position relative to them, and global image registration.

引用

页码：182 / 187

页数：6

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