Yusuke Nomura
Kanazawa Medical University
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Publication
Featured researches published by Yusuke Nomura.
Circulation-cardiovascular Imaging | 2010
Ichiro Matsunari; Hirofumi Aoki; Yusuke Nomura; Nozomi Takeda; Wei-Ping Chen; Junichi Taki; Kenichi Nakajima; Stephan G. Nekolla; Seigo Kinuya; Kouji Kajinami
Background—Although both 123I-metaiodobenzylguanidine (123I-MIBG) imaging and 11C-hydroxyephedrine (11C-HED) positron emission tomography (PET) are used for assessing cardiac sympathetic innervation, their relationship remains unknown. The aims were to determine whether 123I-MIBG parameters such as heart-to-mediastinum ratio (H/M) are associated with quantitative measures by 11C-HED PET and to compare image quality, defect size, and location between 123I-MIBG single-photon emission computed tomography (SPECT) and 11C-HED PET. Methods and Results—Twenty-one patients (mean left ventricular ejection fraction, 39±15%) underwent 123I-MIBG imaging and 11C-HED PET. Early (15-minute), late (3-hour) H/M, and washout rate (WR) were calculated for 123I-MIBG. Myocardial retention and WR was calculated for 11C-HED. Using a polar map approach, defect was defined as the area with relative activity <60% of the maximum. Both the early (r=0.76) and late (r=0.84) 123I-MIBG H/M were correlated with 11C-HED retention. 123I-MIBG WR was correlated with 11C-HED WR (r=0.57). Defect size could not be measured in 3 patients because of poor quality 123I-MIBG SPECT, whereas 11C-HED defect was measurable in all patients. Although defect size measured by early or late 123I-MIBG SPECT was closely correlated with that by 11C-HED PET (early: r=0.94; late: r=0.88), the late 123I-MIBG overestimated defect size particularly in the inferior and septal regions. Conclusions—123I-MIBG H/M gives a reliable estimate of cardiac sympathetic innervation as measured by 11C-HED PET. Furthermore, despite the close correlation in defect size, 11C-HED PET appears to be more suitable for assessing regional abnormalities than does 123I-MIBG SPECT.
European Journal of Nuclear Medicine and Molecular Imaging | 2006
Yusuke Nomura; Ichiro Matsunari; Hiroyuki Takamatsu; Yoshihiro Murakami; Takahiro Matsuya; Junichi Taki; Kenichi Nakajima; Stephan G. Nekolla; Wei-Ping Chen; Kouji Kajinami
Annals of Nuclear Medicine | 2013
Hirofumi Aoki; Ichiro Matsunari; Yusuke Nomura; Wataru Fujita; Ryoko Komatsu; Yoshiharu Miyazaki; Stephan G. Nekolla; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2009
Ichiro Matsunari; Yusuke Nomura; Junichi Taki; Kenichi Nakajima; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2009
Yusuke Nomura; Ichiro Matsunari; Michihiko Kitayama; Takayoshi Asaji; Hiroichi Tsugawa; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2008
Minoru Wakasa; Yusuke Nomura; Osamichi Satake; Hironobu Akao; Yasuyuki Kawai; Hiroaki Uenishi; Michihiko Kitayama; Takayoshi Asaji; Hiroichi Tsugawa; Shinobu Matsui; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2007
Minoru Wakasa; Yusuke Nomura; Osamichi Satake; Hironobu Akao; Michihiko Kitayama; Takayoshi Asaji; Hiroichi Tsugawa; Shinobu Matsui; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2007
Hironobu Akao; Michihiko Kitayama; Yasuyuki Kawai; Atsushi Motoyama; Ryoko Satoh; Yusuke Nomura; Mizuho Sumida; Minoru Wakasa; Osamichi Satake; Nakaba Fujioka; Takayoshi Asaji; Hiroichi Tsugawa; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2006
Yusuke Nomura; Ichiro Matsunari; Takayoshi Asaji; Michihiko Kitayama; Hiroichi Tsugawa; Kouji Kajinami
Japanese Circulation Journal-english Edition | 2005
Yusuke Nomura; Ichiro Matsunari; Shinji Okubo; Hiroichi Tsugawa; Kouji Kajinami