Detection of the sinus node artery using electron beam computed tomography of the heart.

Background: Stenosis or obstruction of the sinus node artery (SNA) of the heart can cause cardiac arrhythmia and even sudden death. The purpose of this study was to evaluate the detectability of the SNA using electron beam computed tomography (EBCT).

Material And Methods: Eighty patients (mean age: 61 +/- 10 years, range: 31-80 years) were examined with ECG-triggered EBCT (exposure time: 100 ms, slice thickness: 1.