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Updated: Jul 16, 2025
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Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
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Optical Fiber-Based Needle Shape Sensing in Real Tissue: Single Core vs. Multicore Approaches
Dimitri A Lezcano1, Yernar Zhetpissov1, Alexandra Cheng2
1Mechanical Engineering, Johns Hopkins University, 3400 North Charles St., Baltimore, Maryland 21218, United States.
Arxiv
|September 21, 2023
Summary
This study compares single-core and multicore fiber optic sensors for flexible needle steering in prostate cancer surgery. Single-core sensors showed superior performance in real tissue, enhancing minimally-invasive procedures.
Area of Science:
- Biomedical Engineering
- Surgical Technology
- Optical Sensing
Background:
- Minimally-invasive surgeries for prostate cancer often require flexible needles for precise steering.
- Real-time needle placement feedback is crucial for avoiding vital structures and reducing patient discomfort.
- Optical shape sensors, including fiber Bragg gratings, offer a solution for intra-operative needle visualization.
Conclusions:
- Single-core fiber-based shape sensing is more effective than multicore configurations for real-time needle guidance in ex-vivo tissue.
- This finding has implications for improving the safety and efficacy of image-guided prostate cancer interventions.
- The study provides insights for future optimization of sensorized needles for minimally-invasive surgery.
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