Integration of Projection Profile Matching into Clinical MR Scanner System for Real-Time Organ Tracking and Image Registration
Integration of Projection Profile Matching into Clinical MR Scanner System for Real-Time Organ Tracking and Image Registration
复制标题
将投影轮廓匹配集成到临床 MR 扫描仪系统中，以实现实时器官跟踪和图像配准
DOI：
10.1007/978-3-540-39903-2_39
复制
发表时间：
2003
期刊：
影响因子：
3.8
通讯作者：
N. Hata
中科院分区：
文献类型：
--
作者：
J. Tokuda;Masaya Hirano;T. Tsukamoto;T. Dohi;N. Hata
我们建议将投影轮廓匹配集成到1.5特斯拉临床磁共振（MR）扫描仪系统中，以实时跟踪目标器官，用于MRI引导治疗。一旦扫描仪获得回波，磁共振回波数据立即从扫描仪传输到“实时”处理计算机，执行投影轮廓匹配，图像重建，图像配准和运动校正，系统以高达10 Hz的帧率和200毫秒的延迟时间提供有关目标器官的呼吸运动信息。我们报告了一个幻影和一个志愿者的测量，以评估延迟和运动测量的准确性，相对于真实的运动，和可行性。这项研究比较了基于投影轮廓匹配的测量方法和用摄像机跟踪幽灵获得的“黄金标准”。误差为1.5 mm，延迟为200 ms。我们跟踪了一名志愿者的肝脏运动，两项研究表明，该系统可以应用于临床。
We propose integrating projection profile matching into a 1.5 Tesla clinical magnetic resonance (MR) scanner system to track a target organ in real-time for MRI guided therapy. As soon as a scanner acquires echoes, MR echo data are transferred immediately from the scanner to an “on-the-fly” processing computer that executes projection profile matching, image reconstruction, image registration and motion correction, The system provides respiratory motion information about a target organ with a frame rate of up to 10 Hz and delay time of 200 ms. We report measurements of a phantom and a volunteer to evaluate the delay and the accuracy of the motion measurement with respect to the true motion, and feasibility. The study compares projection profile matching-based measurement and a “golden-standard” obtained by tracking a phantom with a video camera. The error was 1.5 mm with a delay of 200 ms. We tracked the moving liver of a volunteer, and two studies demonstrates that the system can be applied to clinical use.
影响因子：
2.2
作者：
Essner, R;Daghighian, F;Giuliano, AE
通讯作者：
Giuliano, AE