Simple Frame-based Approach for MR Imaging-guided Abdominal Biopsy: Preliminary Evaluation in a Phantom Model.

Area of Science:

• Medical Imaging
• Surgical Technology
• Interventional Radiology

Background:

• MRI-guided abdominal biopsies traditionally rely on surgeon-centric approaches despite automation benefits.
• Existing methods may lack ergonomics or be prohibitively expensive (e.g., robotic systems).

Purpose of the Study:

• To present an ergonomic biopsy device for streamlining MRI-guided abdominal biopsies.
• To maintain operator control while enhancing the biopsy process.

Main Methods:

• A custom belt with an adjustable biopsy frame was developed.
• Needle guide alignment used a water-filled syringe and parallel MRI imaging.
• Testing was performed on an abdominal phantom using a 3T MRI scanner and a specific MRI sequence.

Main Results:

• The device demonstrated ease of use, even for inexperienced operators.
• Submillimeter alignment accuracy was achieved.
• The MRI sequence was robust, with final accuracy dependent on operator skill.

Conclusions:

• The proposed method offers enhanced stability, accuracy, ergonomics, and cost-effectiveness compared to traditional and robotic systems.
• Further preclinical and clinical evaluation is necessary to confirm effectiveness and safety.