RT Journal Article SR Electronic T1 Recent Advances in Small-Animal Cardiovascular Imaging JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 667 OP 670 DO 10.2967/jnumed.108.058479 VO 50 IS 5 A1 Benjamin M.W. Tsui A1 Dara L. Kraitchman YR 2009 UL http://jnm.snmjournals.org/content/50/5/667.abstract AB Because of the development of gene knockout and transgenic technologies, small animals, such as mice and rats, have become the most widely used animals for cardiovascular imaging studies. Imaging can provide a method to serially evaluate the effect of a particular genetic mutation or pharmacologic therapy (1). In addition, imaging can be used as a noninvasive screening tool for particular cardiovascular phenotypes. Outcome measures of therapeutic efficacy, such as ejection fraction, left ventricular mass, and ventricular volume, can be determined noninvasively as well. Furthermore, small-animal imaging can be used to develop and test new molecular imaging probes (2,3). However, the small size of the heart and rapid heart rate of murine models create special challenges for cardiovascular imaging.