Magnetic resonance imaging basics for the prostate brachytherapist

Area of Science:

• Medical Physics
• Radiation Oncology
• Radiology

Background:

• Magnetic resonance imaging (MRI) is increasingly adopted in radiation therapy.
• Integration of MRI into brachytherapy, particularly for prostate cancer, is becoming more prevalent.
• Understanding the technical aspects and workflow is crucial for successful implementation.

Purpose of the Study:

• To systematically review the physics and technical considerations of incorporating MRI into prostate brachytherapy.
• To outline the typical workflow components in prostate brachytherapy and identify areas for MRI integration.
• To discuss the challenges and considerations for establishing an MRI-guided brachytherapy program.

Main Methods:

• Systematic review of existing literature on MRI in prostate brachytherapy.
• Analysis of MRI system components and terminology relevant to brachytherapy.
• Examination of the standard brachytherapy workflow (diagnosis, implantation, planning, verification, delivery).

Main Results:

• MRI integration is feasible and beneficial across multiple stages of the brachytherapy workflow, including diagnosis, treatment planning, and real-time image guidance for implant placement.
• Key workflow components include diagnosis, implantation, treatment planning (scan + plan), implant verification, and delivery, with MRI offering advantages at several steps.
• Successful implementation requires addressing specific considerations and challenges related to MRI system compatibility, workflow adaptation, and staff training.

Conclusions:

• MRI integration offers significant potential to improve the precision and efficacy of prostate brachytherapy.
• A comprehensive understanding of the technical requirements and workflow modifications is essential for developing robust MRI-guided brachytherapy programs.
• Further research and standardization are needed to optimize MRI utilization in brachytherapy for improved patient outcomes.