van der Weide R, Zuiderveld K J, Bakker C J, Hoogenboom T, van Vaals J J, Viergever M A
Image Sciences Institute, University Hospital Utrecht, The Netherlands.
IEEE Trans Med Imaging. 1998 Oct;17(5):779-85. doi: 10.1109/42.736035.
Magnetic resonance imaging (MRI) offers potential advantages over conventional X-ray techniques for guiding and evaluating vascular interventions. Image guidance of such interventions via passive catheter tracking requires real-time image processing. Commercially available MR scanners currently do not provide this functionality. This paper describes an image processing environment that allows near-real-time MR-guided vascular interventions. It demonstrates 1) that flexibility can be achieved by separating the scanner and the image processing/display system, thereby preserving the stability of the scanner and 2) that sufficiently rapid visualization can be achieved by low-cost workstations equipped with graphics hardware. The setup of the hardware and the software is described in detail. Furthermore, image processing techniques are presented for guiding the interventionalist through simple vascular anatomy. Finally, results of a phantom balloon angioplasty experiment are presented.
与传统X射线技术相比，磁共振成像（MRI）在引导和评估血管介入治疗方面具有潜在优势。通过被动导管跟踪对这类介入治疗进行图像引导需要实时图像处理。目前市售的磁共振扫描仪不具备此功能。本文描述了一种允许进行近实时磁共振引导血管介入治疗的图像处理环境。它证明了：1）通过将扫描仪与图像处理/显示系统分离可实现灵活性，从而保持扫描仪的稳定性；2）配备图形硬件的低成本工作站可实现足够快速的可视化。详细描述了硬件和软件的设置。此外，还介绍了用于引导介入医生了解简单血管解剖结构的图像处理技术。最后，给出了模拟球囊血管成形术实验的结果。
