Das Chandan Jyoti, Goenka Ajit Harishkumar, Srivastava Deep Narayan
Department of Radiology, All India Institute of Medical Sciences, New Delhi, India.
Abdom Imaging. 2010 Apr;35(2):218-23. doi: 10.1007/s00261-009-9504-0. Epub 2009 Mar 4.
MR-guided biopsy may aid to obtain samples in cases which are not feasible with conventional US or CT guidance.
To evaluate safety and efficacy of MRI-guided abdominal biopsy at 1.5-T closed MR system.
MRI guided abdominal biopsy was performed using Siemens Avanto 1.5-T closed MR system. Eighteen samples were obtained in 10 patients under local anesthesia using a novel technique to define skin entry site. None of the cases included in the study were amenable to biopsy using the conventional ultrasound (US) or computed tomography (CT) guidance. MR compatible 18G needle (US Biopsy) was used to obtain biopsy samples. Intravenous gadolinium was used in two patients for better delineation during biopsy. Patients were followed up for 3-5 h and were discharged on the same day.
Technical success was achieved in all patients. Average number of biopsy passes were two (range 1-4). All biopsy samples were adequate for histopathological examination. Average size of the core biopsy specimen was 9 mm.
1.5-T closed MR system allows adequate biopsy sampling from various abdominal organs. This technique may help to sample lesions which are not otherwise amenable for biopsy under conventional CT or US guidance.
在传统超声或CT引导下无法完成取样的情况下，磁共振引导活检有助于获取样本。
评估在1.5-T封闭磁共振系统下进行磁共振引导腹部活检的安全性和有效性。
使用西门子Avanto 1.5-T封闭磁共振系统进行磁共振引导腹部活检。10例患者在局部麻醉下采用一种确定皮肤进针点的新技术获取了18个样本。该研究纳入的所有病例均无法采用传统超声（US）或计算机断层扫描（CT）引导进行活检。使用磁共振兼容的18G穿刺针（美国活检针）获取活检样本。2例患者在活检期间静脉注射钆剂以更好地进行勾勒。患者接受了3至5小时的随访，并于当天出院。
所有患者均获得技术成功。活检穿刺的平均次数为2次（范围1至4次）。所有活检样本均足以进行组织病理学检查。活检芯针样本的平均大小为9毫米。
1.5-T封闭磁共振系统能够从各种腹部器官获取足够的活检样本。该技术可能有助于对在传统CT或US引导下无法进行活检的病变进行取样。
