Noninvasive Estimation of the Aorta Input Function for Measurement of Tumor Blood Flow with [15O] Water. - Hiroshi Watabe; Michael A. Channing; Cyril Riddell; Frederic Jousse; Stephen K. Libutti; Jorge A. Carrasquillo; Stephen L. Bacharach; Richard E. Carson (IEEE Trans. Medical Imaging, 2001)