TO THE EDITOR: In a recent article (1), my friend and colleague Grant Gullberg presented a method for the calculation of ejection fraction in gated myocardial perfusion SPECT studies. The crucial point is the avoidance of edge detection. In their method, the authors used the maximal activity plane as the ventricular delineator. The originality of the method resides in the latter, not in the for...

Over three decades of clinical experience have brought evidence that implantable cardioverter defibrillators (ICDs) should be considered as ‘gold standard’ therapy in prevention of sudden cardiac death. Implantable cardioverter defibrillators are currently indicated for secondary prevention in patients after cardiac arrest and life-threatening ventricular tachyarrhythmias or for primary prevent...

Fourteen patients with restrictive pulmonary disease due to sarcoidosis were studied with radionuclide angiocardiography in order to define the incidence and significance of right and left ventricular dysfunction. Right and left ventricular ejection fractions were determined by an equilibrium technique at both rest and exercise. All patients had a normal left ventricular ejection fraction with ...

UNLABELLED The purpose of this investigation was to evaluate the use of a commercially available lactose-free fatty-meal food supplement, as an alternative to sincalide cholescintigraphy, to develop a standard methodology, and to determine normal gallbladder ejection fractions (GBEFs) for this supplement. METHODS Twenty healthy volunteers all had negative medical histories for hepatobiliary a...

Consider the following clinical scenarios: (1) a 67-yearold man presents for follow-up of recent coronary bypass surgery. He had presented 6 months ago with heart failure, severe 3-vessel coronary disease, and a left ventricular ejection fraction (LVEF) of 30%. He has done well and remains asymptomatic on metoprolol succinate, lisinopril, eplerenone, and occasional furosemide. Repeat echocardio...