Guttman M A, McVeigh E R
Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1061, USA.
Magn Reson Med. 2001 Aug;46(2):317-23. doi: 10.1002/mrm.1194.
Stereoscopic MRI can impart 3D perception with only two image acquisitions. This economy over standard multiplanar 3D volume renderings allows faster frame rates, which are needed for real-time imaging applications. Real-time 3D perception may enhance the appreciation of complex anatomical structures, and may improve hand-eye coordination while manipulating a medical device during an image-guided interventional procedure. To this goal, a system is being developed to acquire and display stereoscopic MR images in real-time. A clinically used, fast gradient-recalled echo-train sequence has been modified to produce stereo image pairs. Features have been added for depth cueing, view sharing, and bulk signal suppression. A workstation was attached to a clinical MR scanner for fast data extraction, image reconstruction and stereoscopic image display.
立体磁共振成像(MRI)仅通过两次图像采集就能产生三维感知。与标准的多平面三维容积渲染相比,这种经济性使得帧率更快,而这是实时成像应用所必需的。实时三维感知可以增强对复杂解剖结构的理解,并且在图像引导介入手术中操作医疗设备时可能改善手眼协调能力。为了实现这一目标,正在开发一种系统以实时采集和显示立体磁共振图像。已对临床使用的快速梯度回波串序列进行修改以生成立体图像对。还添加了用于深度提示、视图共享和整体信号抑制的功能。将一台工作站连接到临床磁共振扫描仪以进行快速数据提取、图像重建和立体图像显示。