Kotsianos Dorothea, Wirth Stefan, Fischer Tanja, Euler Ekkehard, Rock Clemens, Linsenmaier Ulrich, Pfeifer Klaus Jürgen, Reiser Maximilian
Departments of Radiology and Surgery, Klinikum der Universität München, Innenstadt, Nussbaumstrasse 20, 80336 Munchen, Germany.
Eur Radiol. 2004 Sep;14(9):1590-5. doi: 10.1007/s00330-004-2316-2. Epub 2004 Apr 1.
The purpose of this study was to evaluate the image quality of the new 3D imaging system (ISO-C-3D) for osteosyntheses of tibial condylar fractures in comparison with spiral CT (CT). Sixteen human cadaveric knees were examined with a C-arm 3D imaging system and spiral computed tomography. Various screws and plates of steel and titanium were used for osteosynthesis in these specimens. Image quality and clinical value of multiplanar (MP) reformatting of both methods were analyzed. In addition, five patients with tibial condylar fractures were examined for diagnosis and intra-operative control. The image quality of the C-arm 3D imaging system in the cadaveric study was rated as significantly worse than that of spiral CT with and without prostheses. After implantation of prostheses an increased incidence of artifacts was observed, but the diagnostic accuracy was not affected. Titanium implants caused the smallest number of artifacts. The image quality of ISO-C is inferior to CT, and metal artifacts were more prominent, but the clinical value was equal. ISO-C-3D can be useful in planning operative reconstructions and can verify the reconstruction of articular surfaces and the position of implants with diagnostic image quality.
本研究的目的是评估新型3D成像系统（ISO-C-3D）用于胫骨髁骨折骨合成的图像质量，并与螺旋CT（CT）进行比较。使用C形臂3D成像系统和螺旋计算机断层扫描对16个尸体膝关节进行检查。在这些标本中使用各种钢和钛的螺钉及钢板进行骨合成。分析了两种方法多平面（MP）重建的图像质量和临床价值。此外，对5例胫骨髁骨折患者进行了诊断和术中检查。在尸体研究中，C形臂3D成像系统的图像质量被评为明显低于有或无假体情况下的螺旋CT。植入假体后观察到伪影发生率增加，但诊断准确性未受影响。钛植入物产生的伪影数量最少。ISO-C的图像质量低于CT，金属伪影更明显，但临床价值相当。ISO-C-3D在手术重建规划中可能有用，并且可以通过具有诊断图像质量来验证关节面的重建和植入物的位置。
