OBJECTIVE: To investigate the feasibility and handling of abdominal MRI-guided biopsies in a 3-T MRI system. METHODS: Over a 1-year period, 50 biopsies were obtained in 47 patients with tumours of the upper abdominal organs guided by 3-T MRI with a large-bore diameter of 70 cm. Lesions in liver (47), spleen (1) and kidney (2) were biopsied with a coaxial technique using a 16-G biopsy needle guided by a T1-weighted three-dimensional gradient recalled echo volumetric interpolated breath-hold examination (T1w-3D-GRE-VIBE) sequence. Sensitivity, specificity, accuracy, complication rate, interventional complexity, room/intervention time and needle artefacts were determined. RESULTS: A sensitivity of 0.93, specificity of 1.0 and accuracy of 0.94 were observed. Three patients required a rebiopsy. There was a minor complications rate of 13.6%, and no major complications were observed. Histopathology revealed 38 malignant lesions, and 3-month follow-up confirmed 9 benign lesions. Mean lesion diameter was 3.4 ± 3.1 cm (50% being smaller than 2 cm). Mean needle tract length was 10.8 ± 3.3 cm. Median room time was 42.0 ± 19.8 min and intervention time 9.3 ± 8.1 min. Needle artefact size was about 9-fold greater for perpendicular access versus access parallel to the main magnetic field. CONCLUSION: Biopsies of the upper abdomen can be performed with great technical success and easy handling because of the large-bore diameter. The MRI-guided biopsy needle had an acceptable susceptibility artefact at 3 T. However future research must aim to reduce the susceptibility effects of the biopsy systems.
OBJECTIVE: To investigate the feasibility and handling of abdominal MRI-guided biopsies in a 3-T MRI system. METHODS: Over a 1-year period, 50 biopsies were obtained in 47 patients with tumours of the upper abdominal organs guided by 3-T MRI with a large-bore diameter of 70 cm. Lesions in liver (47), spleen (1) and kidney (2) were biopsied with a coaxial technique using a 16-G biopsy needle guided by a T1-weighted three-dimensional gradient recalled echo volumetric interpolated breath-hold examination (T1w-3D-GRE-VIBE) sequence. Sensitivity, specificity, accuracy, complication rate, interventional complexity, room/intervention time and needle artefacts were determined. RESULTS: A sensitivity of 0.93, specificity of 1.0 and accuracy of 0.94 were observed. Three patients required a rebiopsy. There was a minor complications rate of 13.6%, and no major complications were observed. Histopathology revealed 38 malignant lesions, and 3-month follow-up confirmed 9 benign lesions. Mean lesion diameter was 3.4 ± 3.1 cm (50% being smaller than 2 cm). Mean needle tract length was 10.8 ± 3.3 cm. Median room time was 42.0 ± 19.8 min and intervention time 9.3 ± 8.1 min. Needle artefact size was about 9-fold greater for perpendicular access versus access parallel to the main magnetic field. CONCLUSION: Biopsies of the upper abdomen can be performed with great technical success and easy handling because of the large-bore diameter. The MRI-guided biopsy needle had an acceptable susceptibility artefact at 3 T. However future research must aim to reduce the susceptibility effects of the biopsy systems.
Authors: Bernd M Müller-Bierl; Petros Martirosian; Hansjörg Graf; Andreas Boss; Claudius König; Philippe L Pereira; Fritz Schick Journal: Med Phys Date: 2008-06 Impact factor: 4.071
Authors: P R Mueller; S G Silverman; G Tung; J A Brink; G Cardenosa; S Saini; B H Forman; P F Hahn Journal: Radiology Date: 1989-10 Impact factor: 11.105
Authors: H Honda; H Onitsuka; Y Kanazawa; T Matsumata; T Hayashi; K Kaneko; T Fukuya; Y Tateshi; E Adachi; K Masuda Journal: Acta Radiol Date: 1995-03 Impact factor: 1.990
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: Sicco J Braak; Harm H E van Melick; Mircea G Onaca; Johannes P M van Heesewijk; Marco J L van Strijen Journal: Eur Radiol Date: 2012-06-02 Impact factor: 5.315