Geer CP, Simonds J, Anvery A, Chen MY, Burdette JH, Zapadka ME, Ellis TL, Tatter SB, Lesser GJ, Chan MD, McMullen KP, Johnson AJ. Does MR perfusion imaging impact management decisions for patients with brain tumors? A prospective study. AJNR Am J Neuroradiol. 2012 Mar; 33(3):556-62.