减少金属植入物引起的CT伪影。
Reduction of CT artifacts caused by metallic implants.
作者信息
Kalender W A, Hebel R, Ebersberger J
出版信息
Radiology. 1987 Aug;164(2):576-7. doi: 10.1148/radiology.164.2.3602406.
Abstract
A technique to reduce metallic implant artifacts on computed tomography scans is presented. The implant boundaries are determined semiautomatically; the missing projection data are replaced by linear interpolation. The complete procedure requires 1-2 minutes per scan. Images with greatly improved quality were obtained in the presence of surgical clips and pelvic implants; success is limited in highly structured regions, such as the facial skull.
摘要
本文介绍了一种减少计算机断层扫描中金属植入物伪影的技术。植入物边界通过半自动方式确定；缺失的投影数据通过线性插值法进行替换。每次扫描的整个过程需要1至2分钟。在存在手术夹和骨盆植入物的情况下获得了质量大幅提高的图像；在高度结构化的区域，如面部颅骨，效果有限。
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