Orthostatic posture affects brain hemodynamics and metabolism in cerebrovascular disease patients with and without coronary artery disease: a positron emission tomography study. - Yasuomi Ouchi; Etsuji Yoshikawa; Toshihiko Kanno; Masami Futatsubashi; Yoshimoto Sekine; Hiroyuki Okada; Tatsuo Torizuka; Keisei Tanaka (NeuroImage, 2005)