Thallium-201 imaging in a patient with mid-ventricular hypertrophic obstructive cardiomyopathy.

Findings specific to mid-ventricular hypertrophic obstructive cardiomyopathy were obtained in a patient by means of 201Tl planar myocardial scintigraphy. Namely, a myocardial band-like image dividing the left ventricle into two chambers was clearly shown. This was identified as hypertrophic muscle with sphincter-like muscular stenosis at the mid portion of the left ventricle.