Stollberger R, Fazekas F, Payer F, Flooh E
Magnetic Resonance Institute, Karl-Franzens University, Graz, Austria.
Nucl Med Commun. 1995 Apr;16(4):265-72. doi: 10.1097/00006231-199504000-00158.
Complementary morphological information is a prerequisite for the detailed analysis of cerebral SPET studies. We therefore developed a technique which allows the alignment of SPET and magnetic resonance scans by imaging identical slices using external landmarks on an individually fitted mask and subsequent two-dimensional image processing for in-plane matching. Regional analysis of tracer activities can be performed directly on the superimposed SPET and MR outline images or by tracing a region of interest on the original MR scan with a parallel display on the matched SPET image, and vice versa. Tests assessing correct in-plane alignment using MRI, inter- and intra-variability of the matching procedure, and its comparability with an objectively determined best-matching position, confirmed the feasibility, accuracy and usefulness of this procedure.
补充形态学信息是详细分析脑单光子发射计算机断层扫描（SPET）研究的前提条件。因此，我们开发了一种技术，通过使用单独定制面罩上的外部标记对相同层面进行成像，并随后进行二维图像处理以实现平面内匹配，从而实现SPET与磁共振扫描的对齐。示踪剂活性的区域分析可以直接在叠加的SPET和磁共振轮廓图像上进行，或者通过在原始磁共振扫描上描绘感兴趣区域并在匹配的SPET图像上进行平行显示来进行，反之亦然。使用磁共振成像评估平面内正确对齐、匹配程序的组间和组内变异性及其与客观确定的最佳匹配位置的可比性的测试，证实了该程序的可行性、准确性和实用性。
