Fractal analysis of 4D dynamic myocardial stress-CT perfusion imaging differentiates micro- and macrovascular ischemia in a multi-center proof-of-concept study. - Michallek, Florian; Nakamura, Satoshi; Ota, Hideki; Ogawa, Ryo; Shizuka, Takehito; Nakashima, Hitoshi; Wang, Yi-Ning; Ito, Tatsuro; Sakuma, Hajime; Dewey, Marc; Kitagawa, Kakuya (Scientific Reports, 2022)