Evaluation of [125I]IPOS as a molecular imaging probe for hypoxia-inducible factor-1-active regions in a tumor: Comparison among single-photon emission computed tomography/X-ray computed tomography imaging, autoradiography, and immunohistochemistryMasashi Ueda; Takashi Kudo; Yasuko Mutou; Izumi Ogihara Umeda; Azusa Miyano; Kei Ogawa; Masahiro Ono; Hirofumi Fujii; Shinae Kizaka-Kondoh; Masahiro Hiraoka; Hideo Saji · 2011