Equilibrium radionuclide angiocardiography: Its usefulness in current practice and potential future applications

Table 1 Older and recent applications of multigated acquisition

	Older applications	Recent applications	Evolving applications for routine use	Commonly employed modality in current practice
Chamber orientation	+	+/-	-	Echocardiogram
Chamber size	+	+/-	-	Echocardiogram
Rhythm abnormalities	+	-	-	Electrophysiologic studies
Global EF	++	++		Contrast angiogram, 2D echocardiogram
Regional EF	++	++		MUGA
Wall motion abnormalities	++	+/-	-	Gated myocardial perfusion scans
Diastolic function evaluation	-	+	++	Echo-Doppler with E/A measurements
Assessment of synchrony	-	-	++	Speckle tracking echocardiogram

EF: Ejection fraction; E/A wave: E wave depicts early [passive filling of left ventricular (LV)] and A wave represents active (atrial) filling of LV. Normally E>A. However, E<A is seen in diastolic dysfunction. ++: Strongly indicated; +: Indicated; +/-: Doubtful indication; -: Not indicated.