CT of the Hip Prosthesis: Appearance of Components, Fixation, and Complications

被引:89
作者
Roth, Trenton D. [1 ]
Maertz, Nathan A. [1 ]
Parr, J. Andrew [2 ]
Buckwalter, Kenneth A. [1 ]
Choplin, Robert H. [1 ]
机构
[1] Indiana Univ Sch Med, Univ Hosp, Dept Radiol & Imaging Sci, Indianapolis, IN 46202 USA
[2] Indiana Univ Sch Med, Univ Hosp, Dept Orthoped Surg, Indianapolis, IN 46202 USA
关键词
METAL ARTIFACT REDUCTION; X-RAY CT; COMPUTED-TOMOGRAPHY; ACETABULAR OSTEOLYSIS; ORTHOPEDIC HARDWARE; ARTHROPLASTY; REPLACEMENT; CLASSIFICATION; OSSIFICATION; INFECTION;
D O I
10.1148/rg.324115183
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
Multidetector computed tomography (CT) is an excellent way to supplement the radiographic evaluation of problematic hip prostheses. Multidetector CT is well suited for assessing periprosthetic bone, determining precise acetabular cup position, and evaluating periprosthetic fluid collections or ossified masses. Metal implants pose a number of challenges in the performance and interpretation of CT examinations. However, metal artifacts can be minimized by decreasing the detector collimation and pitch, increasing the kilovolt peak and milliampere-seconds, and using appropriate reconstruction algorithms and section thickness. Image interpretation requires a basic understanding of hip reconstruction and hip implants, as well as use of a systematic method of analysis that incorporates prior radiographic findings and CT findings. Radiologists must be familiar with the normal and abnormal CT appearances of hip prostheses and be able to recognize common complications on CT scans. (C)RSNA, 2012 . radiographics.rsna.org
引用
收藏
页码:1089 / +
页数:20
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