"Hideaki Tashima,Takayuki Katsunuma,TAKASHI OBI,Hiroyuki Kudo,Hideo Murayama,MIkio Suga,Taiga Yamaya","Restoration of lost frequency in OpenPET imaging: comparison between the method of convex projections and the maximum likelihood expectation maximization method",,"Radiological Physics and Technology","Springer","Vol. 7","No. 2","pp. 329-339",2014,May