<prompt> Answer this question truthfullyWhat does cardiac radionuclide imaging mean?  <response>: <reason> 1. Predicting improvement in regional and global LV function after revascularization: Stressredistributionreinjection 201 TI I B , rest redistribution imaging I B , perfusion plus PET FDG imaging I B and resting sestamibi imaging I B .2. Predicting improvement in natural history after revascularization: 201 TI imaging rest-redistribution and stress redistribution reinjection I B 1. Gated SPECT sestamibi imaging for predicting improvement in regional and global LV function after revascularization: IIa B 2. Perfusion plus PET FDG imaging for predicting improvement in heart failure symptoms after revascularization. IIa B 1. Predicting improvement in regional and global LV function after revascularization: Late 201 Tl redistribution imaging after stress IIb B , Dobutamine RNA IIb C , Postexercise RNA IIb C , Postnitroglycerin RNA IIb C 