PURPOSE: To assess the feasibility of magnetic resonance (MR)-guided radiofrequency ablation (RFA) of hepatic malignancies using a high-field MR scanner. MATERIALS AND METHODS: A total of 10 patients with 14 primary (N = 1) or secondary (N = 13) hepatic malignancies underwent MR-guided RFA using a closed-bore 1.5 T MR scanner. Lesion diameters ranged from 2.0 cm to 4.7 cm. RFA was performed using a 200-W generator in combination with a 3.5-cm LeVeen electrode applying a standardized energy protocol. RESULTS: RFA was technically feasible in all patients. Necrosis diameter ranged from 2.5 cm to 6.8 cm. The mean follow-up period is 12.2 (1-18) months. In nine out of 10 patients, local tumor control was achieved. For this purpose, a second CT-guided RFA was required in two patients. In four patients, multifocal hepatic tumor progression occurred, with the treated lesion remaining tumor-free in three of these patients. Two patients showed extrahepatic tumor progression. Four patients remained tumor-free. No major complications occurred. CONCLUSION: MR-guided RFA of hepatic malignancies in a closed-bore high-field MR scanner is technically feasible and safe. It can be advantageous in locations considered unfavorable for CT-guided puncture or in patients in which iodinated contrast material is contraindicated. Copyright 2004 Wiley-Liss, Inc.
PURPOSE: To assess the feasibility of magnetic resonance (MR)-guided radiofrequency ablation (RFA) of hepatic malignancies using a high-field MR scanner. MATERIALS AND METHODS: A total of 10 patients with 14 primary (N = 1) or secondary (N = 13) hepatic malignancies underwent MR-guided RFA using a closed-bore 1.5 T MR scanner. Lesion diameters ranged from 2.0 cm to 4.7 cm. RFA was performed using a 200-W generator in combination with a 3.5-cm LeVeen electrode applying a standardized energy protocol. RESULTS: RFA was technically feasible in all patients. Necrosis diameter ranged from 2.5 cm to 6.8 cm. The mean follow-up period is 12.2 (1-18) months. In nine out of 10 patients, local tumor control was achieved. For this purpose, a second CT-guided RFA was required in two patients. In four patients, multifocal hepatic tumor progression occurred, with the treated lesion remaining tumor-free in three of these patients. Two patients showed extrahepatic tumor progression. Four patients remained tumor-free. No major complications occurred. CONCLUSION: MR-guided RFA of hepatic malignancies in a closed-bore high-field MR scanner is technically feasible and safe. It can be advantageous in locations considered unfavorable for CT-guided puncture or in patients in which iodinated contrast material is contraindicated. Copyright 2004 Wiley-Liss, Inc.
Authors: Andreas Boss; Petros Martirosian; Christina Schraml; Stephan Clasen; Michael Fenchel; Artistotelis Anastasiadis; Claus D Claussen; Philippe L Pereira; Fritz Schick Journal: Eur Radiol Date: 2006-01-27 Impact factor: 5.315
Authors: Sascha Santosh Chopra; Sven Christian Schmidt; Robert Eisele; Ulf Teichgräber; Ivo Van der Voort; Christian Seebauer; Florian Streitparth; Guido Schumacher Journal: Surg Endosc Date: 2010-03-13 Impact factor: 4.584
Authors: Andrew S Mikhail; Ayele H Negussie; Cole Graham; Manoj Mathew; Bradford J Wood; Ari Partanen Journal: Med Phys Date: 2016-07 Impact factor: 4.071
Authors: Haytham Elhawary; Sota Oguro; Kemal Tuncali; Paul R Morrison; Servet Tatli; Paul B Shyn; Stuart G Silverman; Nobuhiko Hata Journal: Acad Radiol Date: 2010-11 Impact factor: 3.173
Authors: Yang Guo; Zhuoli Zhang; Dong-Hyun Kim; Weiguo Li; Jodi Nicolai; Daniel Procissi; Yi Huan; Guohong Han; Reed A Omary; Andrew C Larson Journal: Int J Nanomedicine Date: 2013-09-06