Sascha Santosh Chopra1, Guido Schumacher1, Sven Christian Schmidt1, Christian Seebauer2, Ioannis Papanikolaou3, Ivo Van der Voort3, Florian Streitparth4, Jens Rump4, Ulf Teichgraeber4
1Dept. of Surgery, Charit Campus Virchow-Clinic; University Medicine Berlin , Berlin, Germany; 2Dept. Trauma Surgery, Charit Campus Virchow-Clinic; University Medicine Berlin; 3Dept. Gastroenterology, Charit Campus Virchow-Clinic; University Medicine Berlin; 4Dept. of Radiology, Charit Campus Mitte; University Medicine Berlin
Aim of this study was to identify suitable interactive (dynamic) magnetic resonance (MR) sequences for real time MR guided liver dissection in a 1.0 Tesla high field open MRI Scanner. Four dynamic sequences encompassing balanced steady state free precession (bSSFP), T1W gradient echo (GRE), T2W GRE and T2W fast spin echo (FSE) were analyzed regarding the image quality, artifact susceptibility and the performance of SNR and CNR. The T2W TSE sequence (1.5 seconds/image) was considered superior due to an intraoperative SNR of 6.9 (0.7) and CNR (vessel to parenchyma) of 5.6 (1.7) in the interventional setting. As a proof of concept MR-guided laparoscopic liver resection was performed in two healthy house pigs using the T2W TSE sequence.