ATTENUATION COMPENSATION FOR CARDIAC SINGLE-PHOTON EMISSION COMPUTED TOMOGRAPHIC IMAGING .1. IMPACT OF ATTENUATION AND METHODS OF ESTIMATING ATTENUATION MAPS

被引：120

作者：

KING, MA ^{[1
]}

TSUI, BMW ^{[1
]}

PAN, TS ^{[1
]}

机构：

[1] UNIV N CAROLINA,DEPT BIOMED ENGN,CHAPEL HILL,NC

来源：

JOURNAL OF NUCLEAR CARDIOLOGY | 1995年 / 2卷 / 06期

关键词：

SINGLE-PHOTON EMISSION COMPUTED TOMOGRAPHY; ATTENUATION CORRECTION; TRANSMISSION IMAGING; SEGMENTATION;

D O I：

10.1016/S1071-3581(05)80044-3

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Attenuation is believed to be one of the major causes of false-positive cardiac single-photon emission computed tomographic (SPECT) perfusion images, This article reviews the physics of attenuation, the artifacts produced by attenuation, and the need for scatter correction in combination with attenuation correction, The review continues with a comparison of the various configurations for transmission imaging that could be used to estimate patient specific attenuation maps, and an overview of how these are being developed for use on multiheaded SPECT systems, including discussions of truncation, noise, and spatial resolution of the estimated attenuation maps, Ways of estimating patient specific attenuation maps besides transmission imaging are also discussed.

引用

页码：513 / 524

页数：12

共 66 条

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