Margins to account for cardiac and respiratory motion in cardiac radioablation.

ABSTRACT:

Background

Cardiac radioablation (CR) is an emerging treatment for ventricular tachycardia, a rapid abnormal heart rhythm. Effectively delivering radiation to CR targets requires understanding and accounting for geometric uncertainties. One important uncertainty is motion induced by the cardiac and respiratory cycles, which can be accounted for by expanding the targeted region by a margin accounting for the motion's effect on dosimetry.

Purpose

To investigate margins to account for cardiac and respiratory motions in CR and compare different methods of computing these margins.

Methods

Eighty four hundred cardiorespiratory motion traces were created by joining 1050 cardiac motions derived from 30 Hz magnetic resonance images with eight respiratory motions from 5 Hz bi-p

SUBMITTER: Marshall J 

PROVIDER: S-EPMC12480060 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature