Wacker F K, Faiss S, Reither K, Zimmer T, Wendt M, Wolf K J
Department of Radiology, University Hospital Benjamin Franklin, Free University of Berlin, Germany.
Rofo. 2000 Sep;172(9):744-7. doi: 10.1055/s-2000-7223.
To test the feasibility of MR imaging (MRI)-guided percutaneous biliary drainages in patients using an open MR-system.
6 patients with mechanical cholestasis underwent MRI-guided puncture and catheterization of the biliary system following intervention planning with magnetic resonance cholangiography (MRC) in an open low-field MR system. Data on the number of punctures required, success in establishing external and internal drainage, and total procedure time were compared to those of 6 patients who underwent biliary drainage with fluoroscopic guidance.
MRC facilitated intervention planning in all patients. Near-real-time MR imaging enabled interactive positioning of the devices. The bile ducts were punctured under MRI control in three patients in the first, in two in the second, and in one in the third attempt. MRI-guided puncture was faster than the fluoroscopic procedure. Catheterization for external drainage was successful in all patients. Passing the obstructions was not possible under MRI guidance. The procedure time for MRI-guided catheterization was longer than in the conventional technique.
MRI-guidance allows reliable placement of an external biliary drainage in an open low-field MR system.
在开放磁共振系统中，测试磁共振成像（MRI）引导下经皮经肝胆道引流术在患者中的可行性。
6例机械性胆汁淤积患者在开放低场MR系统中，经磁共振胆胰管造影（MRC）进行干预规划后，接受MRI引导下的胆道系统穿刺和置管。将所需穿刺次数、建立外引流和内引流的成功率以及总操作时间等数据，与6例在透视引导下进行胆道引流的患者的数据进行比较。
MRC有助于所有患者的干预规划。近实时MRI成像可实现设备的交互式定位。3例患者在首次尝试时、2例在第二次尝试时、1例在第三次尝试时在MRI控制下穿刺胆管。MRI引导下的穿刺比透视操作更快。所有患者外引流置管均成功。在MRI引导下无法通过梗阻部位。MRI引导下置管的操作时间比传统技术更长。
在开放低场MR系统中，MRI引导可实现外胆道引流的可靠放置。
