Rousseau J, Gibon D, Coste E, Blond S, Pertuzon B, Coche B, Vasseur C, Marchandise X
CLARC, Centre Hospitalier et Universitaire, Lille, France.
Acta Neurochir Suppl. 1995;64:40-4. doi: 10.1007/978-3-7091-9419-5_9.
The authors present a method of stereotaxic localisation using magnetic resonance imaging (MRI) computerized tomography (CT) and digital subtracted angiography (DSA) which does not require localisation frams fixed to the patient's skull, but uses only four cranial landmarks corresponding to the holders of the neurosurgical stereotaxic frame. The method presents no major constraints in routine examinations. The geometrical distortions of the imaging devices are corrected. Three-dimensional localisation is performed using sagittal and axial slices in MRI, axial slices in CT and only two associated frontaly and lateral views in DSA. The images data are transferred to a PC-based system. By locating the landmarks on the images, the transformation matrixes can be computed to obtain the 3D coordinates of a target in the stereotaxic space and in any imaging modality. The results obtained show the precision of the corrections and the millimetre accuracy of pin-point target localisation.
作者提出了一种立体定向定位方法，该方法使用磁共振成像（MRI）、计算机断层扫描（CT）和数字减影血管造影（DSA），不需要将定位框架固定在患者颅骨上，而是仅使用与神经外科立体定向框架固定器相对应的四个颅骨标志。该方法在常规检查中没有重大限制。成像设备的几何失真得到校正。使用MRI中的矢状面和轴位切片、CT中的轴位切片以及DSA中仅两个相关的额面和侧面视图进行三维定位。图像数据被传输到基于PC的系统。通过在图像上定位标志，可以计算变换矩阵，以获得立体定向空间中以及任何成像模态下目标的三维坐标。所获得的结果显示了校正的精度以及 pinpoint 目标定位的毫米级准确性。
