Implementation of Magnetic Resonance Safety Program for Radiation Oncology.

During the last decade, radiation oncology departments have integrated magnetic resonance imaging (MRI) equipment, procedures, and expertise into their practices. MRI safety is an important consideration because a large percentage of patients receiving radiation therapy have histories of multiple surgeries and implanted devices. However, MRI safety guidelines and workflows were traditionally designed for radiology departments.

MRI quality control for low-field MR-IGRT systems: Lessons learned.

Purpose: To present lessons learned from magnetic resonance imaging (MRI) quality control (QC) tests for low-field MRI-guided radiation therapy (MR-IGRT) systems.

Methods: MRI QC programs were established for low-field MRI- Co and MRI-Linac systems. A retrospective analysis of MRI subsystem performance covered system commissioning, operations, maintenance, and quality control.

Lessons Learned From the First Human Low-Field MRI Guided Radiation Therapy of the Heart in the Presence of an Implantable Cardiac Defibrillator.

Magnetic resonance imaging (MRI) guided radiation therapy is reported for the first time in a patient with an implantable cardioverter defibrillator (ICD) and cardiac fibroma in the left ventricle. Stereotactic body radiation therapy was delivered in 5 fractions at a dose of 700 cGy/fraction using a 0.35 T MRI-linear accelerator with real-time tumor tracking and beam gating.