Stress-induced ischemia in the right ventricular myocardium on ^99mTc-MIBI myocardial perfusion scintigraphy in a rare case of double-chambered right ventricle

Excerpt

Right ventricle (RV) myocardial perfusion assessment is not attempted in stress/rest SPECT myocardial perfusion imaging (MPI) owing to poor visualization of the RV myocardium (unless hypertrophied) likely due to lower myocardial blood flow, less myocardial thickness, and limited spatial resolution of present-day gamma cameras.1 RV wall ischemia can occur along with left ventricular (LV) inferior wall ischemia since both are supplied by the right coronary artery (RCA) and hold significant prognostic value.2 The authors present a rare case of a 65-year-woman with reversible perfusion defects in inferior wall of left ventricle as well as right ventricle (RV) leading to the incidental detection of double-chambered RV (DCRV) with anomalous muscle band (AMB) in coronary angiography (CAG) as the possible etiology leading to the RV myocardial hypertrophy enabling it to be detected on MPI. …