Moström U, Ytterbergh C
Uppsala University, Department of Diagnostic Radiology, Sweden.
J Comput Assist Tomogr. 1988 May-Jun;12(3):474-81. doi: 10.1097/00004728-198805010-00023.
A phantom was constructed with the intention of simulating the clinical situation at examination of the spine. Artifacts from bony vertebral structures were analyzed and the uniformity in a body-shaped object was studied. Tests were carried out on eight CT scanners. A considerable variation in uniformity was found between the tested scanner models. The CT numbers within the spinal canal and in a region anterior to the spine were elevated for most of the scanners. The deviation varied considerably, however, between models.
构建了一个体模，旨在模拟脊柱检查时的临床情况。分析了来自椎体骨结构的伪影，并研究了一个身体形状物体内的均匀性。在八台CT扫描仪上进行了测试。发现测试的扫描仪型号之间在均匀性方面存在相当大的差异。对于大多数扫描仪，椎管内和脊柱前方区域的CT值升高。然而，不同型号之间的偏差差异很大。
