LAUSR

Papillary muscles (PM) are important structural components of the heart, giving support to the atrioventricular valve (AV valve). Functional incompetence of PM due to ischemia or other anomalies can result in AV valve dysfunctions, and their ischemia exacerbated during stress is reported to cause transient mitral regurgitation. Stress myocardial perfusion imaging (MPI) done with conventional SPECT gamma camera demonstrates the perfusion pattern of left ventricle (LV) walls but fails to reveal the PM status due to its limited spatial resolution. In this article, we present a middleaged hypertensive man showing reversible perfusion defect in the hypertrophied PM in stress SPECT MPI done using CZT-based gamma camera, confirmed on 2D Echocardiography and cardiac magnetic resonance imaging (MRI).