Comparison of CT Imaging Artifacts from Craniomaxillofacial Internal Fixation Devices
Comparison of CT Imaging Artifacts from Craniomaxillofacial Internal Fixation Devices
复制标题
颅颌面内固定装置CT成像伪影比较
DOI：
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发表时间：
1993
影响因子：
3.6
通讯作者：
M. Yaremchuk
中科院分区：
文献类型：
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作者：
T. Fiala;R. Novelline;M. Yaremchuk
&NA;本研究比较了颅颌面内固定器械在CT图像中引起的伪影。对下颌骨重建和“微型”钛、Vitallium和不锈钢系统、“微型”钛和Vitallium系统以及不锈钢丝进行了评价。将硬件放置在尼龙网格上并浸没在水中。在骨和软组织窗口设置下获得CT图像。对所有伪影进行比较，并在每次至少5次观察后进行分级。发现“星爆”伪影的严重程度与固定硬件的物理尺寸及其组成有关。钛硬件引起的伪影最少。除骨折块间钢丝外，Vitallium和不锈钢固定器械产生的伪影明显更多。这些结果与理论预测一致。数据表明，当术后成像是重要的临床考虑因素时，（1）应使用实现稳定固定所需的最少量植入物材料，（2）应考虑植入物材料与感兴趣区域的接近度，（3）钛植入物产生的伪影少于Vitallium或不锈钢植入物。（Plast。重建92：1227，1993）。
&NA; This study compares the artifacts caused by craniomaxillofacial internal fixation devices in CT images. Mandibular reconstruction and “mini” titanium, Vitallium, and stainless steel systems, “micro” titanium and Vitallium systems, and stainless steel wires were evaluated. The hardware was placed on a nylon grid and submerged in water. CT images were obtained with both bone and soft‐tissue window settings. All artifacts were compared and graded after a minimum of five observations each. The severity of “starburst” artifact was found to be related to the physical size of the fixation hardware and its composition. Titanium hardware caused the least amount of artifact. Vitallium and stainless steel fixation devices, with the exception of interfragmentary wiring, produced significantly more artifact. These results agree with theoretical predictions. The data indicate that when postoperative imaging is an important clinical consideration, (1) the least amount of implant material necessary to achieve stable fixation should be used, (2) the proximity of implant material to the area of interest should be considered, and (3) titanium implants produce less artifact than Vitallium or stainless steel implants. (Plast. Reconstr. Surg. 92: 1227, 1993.)