Artifacts at PET and PET/CT caused by metallic hip prosthetic material

被引：133

作者：

Goerres, GW

Ziegler, SI

Burger, C

von Schulthess, TBGK

Buck, A

机构：

[1] Univ Zurich Hosp, Div Nucl Med, CH-8091 Zurich, Switzerland

[2] Tech Univ Munich, Nucl Med Clin, D-8000 Munich, Germany

来源：

RADIOLOGY | 2003年 / 226卷 / 02期

关键词：

images; processing; phantoms; positron emission tomography (PET); artifact; stents and prostheses; test objects;

D O I：

10.1148/radiol.2262012141

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 [临床医学]; 100207 [影像医学与核医学]; 1009 [特种医学];

摘要：

Hip prosthetic material and a steel rod were scanned in a water bath of fluorine 18 fluorodeoxyglucose (FDG) with positron emission tomographic (PET) and PET/computed tomographic (CT) scanners to evaluate the generation of artifacts adjacent to the metal. The influences of attenuation correction (AC), positioning of the object, and image reconstruction were examined. Use of CT- and germanium 68- based AC resulted in generation of artifacts that mimicked increased FDG uptake. These artifacts were more evident when the object was moved between the emission and transmission scans. When attenuation-weighted iterative reconstruction was used, these artifacts were less evident. (C) RSNA, 2002.

引用

页码：577 / 584

页数：8

共 13 条

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An automatic classification technique for attenuation correction in positron emission tomography [J].