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SIR 2025

Men's Health

Scientific Session

Session: Prostate 1

Soteria Prostate Biopsy: Single-Arm Retrospective Evaluation of the Pneumatic Robotic-Assisted Technique for Transrectal MR-Guided Prostate Biopsy

Tuesday, April 1, 2025
4:21 PM – 4:30 PM CT
Location: Music City Center, 204
Purpose: Cognitive fusion as well as software-assisted ultrasound/MR (magnetic resonance) fusion transrectal prostate lesion biopsy are current techniques to attain a diagnostic pathologic sample. Manual in-gantry MR-guided transrectal biopsy of prostatic lesions is an alternative method that offers more precise and accurate detection. We aim to evaluate the efficacy of a remote controlled pneumatic robotic system with in-bore MR-guided biopsy at our institution through comparison of pre- and post- biopsy data, offering an even higher level of precision and safety.

Materials and Methods: A sample of 25 patients with 28 lesions who received MRI assisted transrectal biopsies with the pneumatic robot system was identified, and the following data was collected: indication for biopsy, site and target of biopsy, location of biopsy, biopsy pathology, post-biopsy complications, MRI findings, upgrade in treatment plan, intervention type, upgrade in Gleason score, and biopsy success rate. Pre-biopsy data was also collected including the presence of lower urinary tract symptoms (LUTS), history of previous biopsy, type of previous biopsy, and prostate-specific antigen level.

Results: 60% of patients had an upgrade in management after utilizing the new biopsy technique. 35% had an increase from their Is Gleason score. None lead to a decrease. Post-biopsy pain was reported in 3/28, associated with transient hematuria in 1 case and transient dysuria in another. No infections were identified.

Conclusion: The advanced technique of a remote controlled robotic-assisted in-bore MR-guided biopsy system allows a precise collection of histologically relevant tissue maximizing sensitivity of the procedure while decreasing the room for error in other techniques e.g., fusion, or missing cancerous tissue, while maintaining high safety and minimum to no complications.