Dynamic Intraoperative Prostate Brachytherapy Using 3D TRUS Guidance with Robot Assistance

Area of Science:

• Medical Robotics
• Oncology
• Medical Imaging

Background:

• Prostate brachytherapy is a minimally invasive treatment for prostate cancer.
• Accurate seed placement is crucial for effective treatment and minimizing side effects.
• Current methods may face challenges in real-time precision and intraoperative adjustments.

Purpose of the Study:

• To develop and evaluate a novel system for dynamic intraoperative prostate brachytherapy.
• To enhance treatment accuracy and efficiency through robotic assistance and 3D ultrasound guidance.
• To enable real-time planning and seed placement during the procedure.

Main Methods:

• Integration of 3D transrectal ultrasound (TRUS) imaging with a robotic system.
• Software for prostate segmentation, intraoperative planning, and needle/seed tracking.
• Utilized discrete dynamic contour method for prostate segmentation.
• Employed geometric optimization and simulated annealing for treatment planning.
• Real-time needle and seed segmentation using image analysis techniques.

Main Results:

• Achieved high needle placement accuracy at the patient skin (0.15mm ± 0.06mm).
• Demonstrated low needle angulation error (0.07°).
• Reported precise needle targeting accuracy (0.79mm ± 0.32mm).
• System successfully integrated 3D ultrasound, robotic control, and advanced planning software.

Conclusions:

• The developed robotic system with 3D ultrasound guidance offers high precision for intraoperative prostate brachytherapy.
• This technology has the potential to improve treatment outcomes and patient safety in prostate cancer management.
• The system's real-time capabilities and accuracy pave the way for more refined brachytherapy procedures.