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자료유형
학술저널
저자정보
Choi, Jae Yong (Department of Nuclear Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine) Park, Ji-Ae (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) Kim, Jung Young (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) Lee, Ji Woong (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) Lee, Minkyung (Department of Nuclear Medicine, Inha University College of Medicine, Inha University Hospital) Shin, Un Chol (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) Kang, Joo Hyun (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) An, Gwang Il (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) Lee, Kyo Chul (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences) Ryu, Young Hoon (Department of Nuclear Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine) Kim, Kyeong Min (Molecular Imaging Research Center, Korea Institute of Radiological and Med)
저널정보
대한방사성의약품학회 대한방사성의약품학회지 대한방사성의약품학회지 제2권 제2호
발행연도
2016.1
수록면
108 - 112 (5page)

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Molecular imaging with the radiolabeled RGD peptides for ${\alpha}_v{\beta}_3$ integrin has been an increasing interest for tumor diagnosis and the treatment monitoring. Recently, $^{64}Cu$-NODAGA-gluco-E[c(RGDfK)]$_2$ was developed for quantification of ${\alpha}_v{\beta}_3$ integrin and its biological properties was elucidated. To better understand the molecular process in vivo, we performed the kinetic analysis for the $^{64}Cu$-NODAGA-gluco-E[c(RGDfK)]$_2$. After preparation of a radiotracer, dynamic PET images were obtained in the U87MG xenograft mice for 60 min (n = 6). Binding potential values were estimated from the 3-tissue compartment model, reference Logan and simplified reference tissue model. In the early time frame (0-20 min), the liver, kidney, intestine, urinary bladder and tumor were visualized but these uptakes were diminished as time went by. The tumors showed a good contrast at 40 min after administration. $^{64}Cu$-NODAGA-gluco-E[c(RGDfK)]$_2$ showed the 2-fold uptake in the tumor compared with that in the muscle. The parametric maps for binding values also provide the higher tumor-to-background contrast than the static images. A binding value obtained from the 3-tissue compartment model was comparable to other modeling methods. From these results, we conclude that $^{64}Cu$-NODAGA-gluco-E[c(RGDfK)]$_2$ may be a promising PET radiotracer for the evaluation of angiogenesis.

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