Dosimetric characteristics of cardiorespiratory motion during cardiac stereotactic body radiotherapy and dose gain from respiratory gating.

ABSTRACT:

Background

Cardiac stereotactic body radiotherapy (CSBRT) is a promising new option for patients with refractory arrhythmias, but complex combined cardiopulmonary motion poses a challenge for precise CSBRT treatment. At present, the dosimetric effects of cardiopulmonary motion on the actual delivery of CSBRT are still unclear, which may deter its widespread clinical application. This study aimed to evaluate the dosimetric effects of complex cardiorespiratory motion during CSBRT and explore the dosimetric advantages of respiratory gating.

Methods

A dynamic cardiac phantom was used to simulate different patterns of cardiac pulsation, respiratory motion, and cardiorespiratory motion. Radiochromic film was used to measure the dose, with radiation doses measured for both free-bre

SUBMITTER: Wang G 

PROVIDER: S-EPMC12780564 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature