Comparison of 64-row and 16-row multidetector CT in the perfusion CT evaluation of acute ischemic stroke patients receiving intravenous thrombolytic therapy. - Sillanpaa, Niko; Rusanen, Harri; Saarinen, Jukka; Dastidar, Prasun; Soimakallio, Seppo (Neuroradiology, 2012)