Characterization of a deformable beating cardiac phantom with real-time dosimetric capabilities for validation of MRI-guided heart radiotherapy.

ABSTRACT:

Background

Stereotactic arrhythmia radioablation (STAR) has emerged as a salvage treatment for patients with ventricular tachycardia, and the MR-linacs offer MRI-guidance during such treatment. However, available workflows on MR-linacs are not yet optimized and characterized dedicatedly to perform heart radiotherapy due to a lack of realistic MRI-compatible cardiac phantoms suitable for real-time dosimetry.

Purpose

This work introduces a newly designed, deformable, and MRI-compatible cardiac phantom with real-time and multi-point dosimetric capabilities, characterizes its MRI properties and mechanical behavior, and showcases its use for MR-linac end-to-end workflow testing.

Methods

This cardiac phantom (IBA QUASAR, London, Ontario, Canada) is composed of a deformable

SUBMITTER: Aubert MMN 

PROVIDER: S-EPMC12900995 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature