Most reports about the clinical use of MRI-guided interventions have thus far been limited to biopsies and the monitoring of ablation techniques, where MRI either replaces or supplements another tomographic procedure. In a clinical feasibility study , MRI was ideally suited for guiding a percutaneous transhepatic bile drainage. During this intervention a percutaneous approach is followed by intraductal catheterization. In contrast to conventionally used fluoroscopic guidance, MRI guidance allows a targeted puncture and a reliable catheter positioning based on selective bile duct visualization (magnetic resonance cholangio pancreatography, MRCP) and tomographic information, both prior to and during the actual intervention.
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