Assessment of myocardial viability in low signal intensity areas on cine MRI comparison with late gadolinium enhancement imaging in patients with prior myocardial infarction by Tanimoto Takashi, Kimura Keizo, Ota Shingo, Masuno Tomizo, Ozaki Yuichi, Hirata Kumiko, Kubo Takashi, Toshio Imanishi, Akasaka Takashi