COMPUTED TOMOGRAPHY RECONSTRUCTION FROM HOLLOW PROJECTIONS - APPLICATION TO INVIVO EVALUATION OF ARTIFICIAL HIP JOINTS

被引:48
作者
HINDERLING, T
RUEGSEGGER, P
ANLIKER, M
DIETSCHI, C
机构
[1] ETH ZURICH,INST BIOMED ENGN,MOUSSONSTR 18,CH-8044 ZURICH,SWITZERLAND
[2] UNIV ZURICH,ORTHOPED CLIN,CH-8006 ZURICH,SWITZERLAND
关键词
Artificial; Computed tomography; Hip; Image reconstruction; Joints;
D O I
10.1097/00004728-197902000-00009
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
The long-term mechanical stability of total hip arthroplasties limits the application of this widely used surgical procedure in cases of severe coxarthroses. A noninvasive method of assessing the tissue distribution in the vicinity of the implant-bone interface is needed to identify early signs of implant loosening and to evaluate new prosthetic solutions. In order to develop such a method, a modified computed tomography technique has been devised that yields cross-sectional images without the usual artifacts caused by metallic implants. This technique provides information on bone mineral and bone cement distributions as well as on the precise position and orientation of the implant within the femur shaft. Results obtained from excised human femurs and preliminary data from measurements on patients made 3 months post- operatively reveal that the bone cement distribution is much less favorable than is indicated by radiographs. © 1979 Raven Press, New York.
引用
收藏
页码:52 / 57
页数:6
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