Evaluation of left ventricular venous system with 320-slice dynamic volume computed tomography

Objective To facilitate the implantation of left ventricular（LV） lead in cardiac resynchronization therapy（CRT） by evaluating the LV venous system with 320-slice dynamic volume computed tomography（CT）. Methods The LV venous system was reconstructed in 110 patients with coronary heart disease（40 males and 70 females） at the age of 57.9±10.8 years during which the R–R interval of body surface ECG was 30%-80%. Results The LV venous system was clearly observed in all patients.The best imaging was achieved in 91.2% of the patients when the R–R interval of body surface ECG was 30%-50%.One of the 2 most frequently used target veins（postero-lateral vein and lateral vein） in CRT was not found in 23.6%-26.4% of the patients,while both of them were not be observed in 5.5% of the patients. Conclusion 320-slice dynamic volume CT can clearly show the LV venous system and evaluate the most frequently used target veins in CRT,thus contributing to the implantation of LV lead during CRT.