Doyle Steven, Wiltz Mauricio J, Kraut Richard A
N Y State Dent J. 2015 Jun-Jul;81(4):42-5.
The purpose of this study was to compare cone-beam computer tomography (CBCT) and multi-slice spiral computed tomography (MSCT) bone density measurements in the maxilla and mandible to determine whether any discrepancies between imaging modalities exist.
MATERIAL & METHODS: 33 sets of CBCT and MSCT scans were evaluated using Simplant software. Density measurements were made in eight regions of interest on each scan and were compared and analyzed.
Correlation of density measurements at specific regions of interest between CBCT and MSCT was only fair and ranged from 0.61-0.86. High-density areas, such as the anterior mandible, showed a higher correlation between imaging modalities than low-density regions, such as the posterior maxilla.
Care should be taken when relying upon CBCT to determine bone density, especially in low-density regions such as the posterior maxilla.
本研究的目的是比较锥形束计算机断层扫描（CBCT）和多层螺旋计算机断层扫描（MSCT）在上颌骨和下颌骨的骨密度测量结果，以确定成像方式之间是否存在差异。
使用Simplant软件评估33组CBCT和MSCT扫描。在每次扫描的八个感兴趣区域进行密度测量，并进行比较和分析。
CBCT和MSCT在特定感兴趣区域的密度测量相关性一般，范围为0.61 - 0.86。高密度区域，如下颌前部，成像方式之间的相关性高于低密度区域，如上颌后部。
在依靠CBCT确定骨密度时应谨慎，尤其是在上颌后部等低密度区域。
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