RT Book, Section A1 Soman, Prem A1 Malhotra, Saurabh A2 Heller, Gary V. A2 Hendel, Robert C. SR Print(0) ID 1145443790 T1 ECG-Gated SPECT Imaging for Assessment of Ventricular Function and Dyssynchrony T2 Nuclear Cardiology: Practical Applications, 3e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259644993 LK accesscardiology.mhmedical.com/content.aspx?aid=1145443790 RD 2024/04/18 AB The introduction of electrocardiographic (ECG)-gated myocardial single-photon emission computed tomography (SPECT) in the 1990s expanded the application of myocardial perfusion imaging to routinely include the assessment of LV systolic function.1 The development and use of this technique occurred when technetium-based imaging agents were placed into clinical use as these tracers provided much higher counts, and therefore image quality for measuring function. This was a critical development in the evolution of myocardial perfusion imaging. Currently, the majority of myocardial perfusion studies performed in the United States use gated SPECT technology and Tc-99m tracers. A more recent development has been the evaluation of ventricular dyssynchrony by SPECT, providing further data beyond myocardial perfusion. This chapter will discuss both aspects of ventricular assessment.