X-ray-based attenuation correction of myocardial perfusion scans: practical feasibility and diagnostic impact.

Objectives: This study describes the practical implementation of X-ray-based attenuation correction (AC) of myocardial perfusion scans in a large teaching hospital, characterizes the impact of AC on the diagnostic confidence of the interpreter and tries to predict which patients are likely to benefit from the technique.

Methods: One hundred and seven consecutive patients underwent a 2 day (99m)Tc-tetrofosmin protocol with adenosine stress using GE Millennium VG with AC and ECG-gated acquisition (ECG-g). The diagnostic impact of AC/ECG-g was judged by a panel of three observers.