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Updated: Jun 22, 2026
Use of MRI-ultrasound Fusion to Achieve Targeted Prostate Biopsy
Published on: April 9, 2019
[Retrospective 5-year analysis of MR-guided biopsies in a low-field MR system]
1Institut für Diagnostische und Interventionelle Radiologie, J.-W.-Goethe-Universität Frankfurt. Zangos@em.uni-frankfurt.de
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.
