Yasuji Ryu

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To understand the hemodynamics of hepatocellular carcinoma (HCC) is important for the precise imaging diagnosis and treatment, because there is an intense correlation between their hemodynamics and pathophysiology. Angiogenesis such as sinusoidal capillarization and unpaired arteries shows gradual increase during multi-step hepatocarcinogenesis from(More)
  • Ken-ichiro Kato, Toshinari Takamura, Yumie Takeshita, Yasuji Ryu, Hirofumi Misu, Tsuguhito Ota +5 others
  • 2014
OBJECTIVE The aim of this study was to examine the association between ectopic fat and organ-specific insulin resistance (IR) in insulin-target organs in patients with nonalcoholic fatty liver disease (NAFLD). METHODS Organ-specific IR in the liver (hepatic glucose production (HGP) × fasting plasma insulin (FPI) and suppression of HGP by insulin [%HGP]),(More)
Parametric-fitting approaches for tracer kinetic modeling depend on the capability of a computational method to describe underlying physiologic processes that cause temporal intensity changes in dynamic contrast-enhanced (DCE) images. Rapid scan techniques allow perfusion CT imaging with high temporal resolution. In clinical practice, however, the perfusion(More)
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