Introduction: Three-dimensional rotational angiography (3DRA) is a new imaging method used to guide ablation of the left atrium. The objective of this work was to create a protocol for imaging the left ventricle in support of ventricular tachycardia (VT) ablation.
Methods: We used own protocol based on direct left atrial protocol for acquisition of raw image data of left ventricle in 13 patients. Models were manually segmented and fused with live fluoroscopy on Philips EP Navigator workstation. The point-tagging system was used in 2 patients. In 5 patients were compared dimensions in raw image data obtained from 3DRA and from CT scan. In 2 patients we performed fusion of 3DRA model and electroanatomical map from EnSite Velocity system.
Results: The 3D model was applicable for all patients. The 3DRA fluoroscopy exposure was 12948 ± 4631 mGycm2. Correlation between 3DRA and CT measurements was found (r = 0,975, p < 0,05).
Conclusions: The 3DRA seems to be applicable to guide VT ablations and benefit for the patient is lower radiation dose and lower dose of contrast agent compared to CT scan.