RT Journal Article SR Electronic T1 Imaging of the Cardiac Sympathetic Nervous System Has Potential Value in the Evaluation of Patients with HFpEF JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP jnumed.116.186130 DO 10.2967/jnumed.116.186130 A1 Nabil E Boutagy A1 Albert J. Sinusas YR 2017 UL http://jnm.snmjournals.org/content/early/2017/02/22/jnumed.116.186130.abstract AB