Cardiac device motion tracking from kilovoltage projections during stereotactic arrhythmia radioablation.

ABSTRACT:

Background and purpose

Cardiac and respiratory motion present a challenge to accurate dose delivery during stereotactic arrhythmia radioablation (STAR). This study investigated a motion tracking method using kilovoltage (kV) images on a gantry-mounted linear accelerator during STAR.

Materials and methods

An implantable cardioverter-defibrillator (ICD) lead tip was used for motion tracking. Planning computed tomography and cone beam computed tomography scans were analysed retrospectively on ten patients treated with STAR in RAdiosurgery for VENtricular TAchycardia (RAVENTA) (four patients underwent deep inspiratory breath-hold, two with free breathing, three under abdominal compression, and one using high frequency ventilation). A template-matching approach was developed to s

SUBMITTER: Xiong W 

PROVIDER: S-EPMC12925050 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature