PURPOSE: The purpose of this study was to evaluate the safety and clinical value of MR-guided biopsies in an open 0.2 T low-field system. MATERIALS AND METHODS: A total of 322 patients with suspicious lesions of different body regions were biopsied in a low-field MRI system (0.2 T, Concerto, Siemens). The procedures were guided using T 1-weighted Flash sequences (TR/TE = 100/9; 70 degrees). The lesions were repeatedly biopsied using the coaxial technique with a 15-gauge (diameter 2 mm) puncture needle. Complications and biopsy findings were analyzed retrospectively. RESULTS: In all cases the biopsy procedures were successfully performed with MR guidance. In 298 patients diagnosis was able to be confirmed on the basis of the probes. The clinical follow-up showed that in 24 patients the lesions were missed by MR-guided biopsy. From this a sensitivity of 86%, a specificity of 87% and an accuracy of 93% were calculated. In two patients major complications were observed (morbidity rate 0.6 %). CONCLUSION: MR-guided biopsy can be performed safely and precisely in a low-field MR system and are a supplement to US or CT-guided biopsies.
PURPOSE: The purpose of this study was to evaluate the safety and clinical value of MR-guided biopsies in an open 0.2 T low-field system. MATERIALS AND METHODS: A total of 322 patients with suspicious lesions of different body regions were biopsied in a low-field MRI system (0.2 T, Concerto, Siemens). The procedures were guided using T 1-weighted Flash sequences (TR/TE = 100/9; 70 degrees). The lesions were repeatedly biopsied using the coaxial technique with a 15-gauge (diameter 2 mm) puncture needle. Complications and biopsy findings were analyzed retrospectively. RESULTS: In all cases the biopsy procedures were successfully performed with MR guidance. In 298 patients diagnosis was able to be confirmed on the basis of the probes. The clinical follow-up showed that in 24 patients the lesions were missed by MR-guided biopsy. From this a sensitivity of 86%, a specificity of 87% and an accuracy of 93% were calculated. In two patients major complications were observed (morbidity rate 0.6 %). CONCLUSION: MR-guided biopsy can be performed safely and precisely in a low-field MR system and are a supplement to US or CT-guided biopsies.
Authors: Rüdiger Hoffmann; Christoph Thomas; Hansjörg Rempp; Diethard Schmidt; Philippe L Pereira; Claus D Claussen; Stephan Clasen Journal: Eur Radiol Date: 2011-09-30 Impact factor: 5.315
Authors: Tatjana Gruber-Rouh; Clara Lee; Jan Bolck; Nagy N N Naguib; Boris Schulz; Katrin Eichler; Rene Aschenbach; Julian L Wichmann; Thomas J Vogl; Stephan Zangos Journal: Korean J Radiol Date: 2015-07-01 Impact factor: 3.500
Authors: Tatjana Gruber-Rouh; Axel Thalhammer; Thomas Klingebiel; Nour-Eldin A Nour-Eldin; Thomas J Vogl; Katrin Eichler; Nagy Naguib; Martin Beeres Journal: Ital J Pediatr Date: 2017-01-06 Impact factor: 2.638