Samset Eigil, Hirschberg Henry
Interventional Center, National Hospital of Norway, University of Oslo, Oslo, Norway.
Stereotact Funct Neurosurg. 2002;79(3-4):191-201. doi: 10.1159/000070832.
To compare stereotactic target determination, based on images obtained from interventional MRI (iMRI), conventional closed MR and CT.
Stereotactic coordinates for 55 targets in an artificial scull were derived from iMRI scans and compared using CT as the standard. Stereotactic coordinates were also derived from iMRI scans in a series of patients and compared using iMRI fused with CT as the standard.
The mean difference between targets in the skull phantom determined from iMRI and CT images was 0.90 +/- 0.28 mm, with a maximum difference of 1.57 mm. The mean difference between targets in the patients derived from iMRI alone and interventional MR fused with CT was 1.39 +/- 0.54 mm, with a maximum difference of 2.47 mm.
The results indicate that iMRI can be used for stereotactic target localization.
比较基于介入性磁共振成像（iMRI）、传统封闭式磁共振成像（MR）和计算机断层扫描（CT）所获图像进行立体定向靶点确定的情况。
从iMRI扫描中得出人工颅骨内55个靶点的立体定向坐标，并以CT作为标准进行比较。还从一系列患者的iMRI扫描中得出立体定向坐标，并以融合了CT的iMRI作为标准进行比较。
根据iMRI和CT图像确定的颅骨模型中靶点的平均差异为0.90±0.28毫米，最大差异为1.57毫米。仅由iMRI得出的患者靶点与融合了CT的介入性磁共振成像得出的靶点之间的平均差异为1.39±0.54毫米，最大差异为2.47毫米。
结果表明iMRI可用于立体定向靶点定位。
