Myocardial perfusion SPECT in a case of retropulmonary looping of left coronary artery in a baby after arterial switch surgery.
Pediatric myocardial perfusion imaging (MPI) is not a routine investigation in an Indian setting due to under referrals and logistic problems. However, MPI is a frequently performed and established modality of investigation in adults for the identification of myocardial ischemia and viability. We report myocardial perfusion scintigraphy in a case of retropulmonary looping of left coronary artery in a baby after arterial switch surgery. Adenosine stress MPI revealed a large infarct involving anterior segment with moderate reversible ischemia of the lateral left ventricular segment. Coronary angiogram later confirmed left main coronary artery ostial occlusion with retrograde collateral supply from dilated right coronary artery.
Department of Nuclear Medicine and PET CT, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham University, Cochin, Kerala, India.
Subramanyam
S
Padma
Department of Nuclear Medicine and PET CT, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham University, Cochin, Kerala, India.
Palaniswamy Shanmuga
PS
Sundaram
Arterial switch operation; Taussig–Bing anomaly; myocardial perfusion imaging; retropulmonary looping of coronaries; transposition of great vessels