Dynamic contrast-enhanced MR imaging and MR-guided bone biopsy on a 0.23 Topen imager

Objective: To assess the feasibility of MR (magnetic resonance)-guided bone biopsies. Design and patients: Thirty-six consecutive patients with known or suspected benign or malignant bone lesions underwent comprehensive MR im aging. A dynamic contrast-enhanced sequence followed by stationary T1-weigh ted sequences were obtained and MR-guided bone biopsy of the tumor at the s ite with fastest enhancement was performed using an open 0.23 T MR imager. Results: All MR-guided bone biopsies samples were estimated to be sufficien t by the pathologists. The biopsy specimens were diagnostic in 34 of 36 cas es. Conclusion: MR-guided bone biopsies combined with dynamic contrast-enha nced imaging are feasible and safe for the diagnostic investigation of equi vocal bone lesions.