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  1. No Access

    Article

    Relationship between diverse patient body size- and image acquisition-related factors, and quantitative and qualitative image quality in coronary computed tomography angiography: a multicenter observational study

    We investigated the effects of patient- and image acquisition-related factors on the image quality in coronary CT angiography (CCTA).

    Daisuke Utsunomiya, Ryoichi Tanaka, Kunihiro Yoshioka in Japanese Journal of Radiology (2016)

  2. Article

    Open Access

    Effects of High-concentration contrast material and low-voltage CT on contrast for multiphasic CT of the upper abdomen: comparison using the simulation with virtual monochromatic imaging obtained by fast-switch kVp dual-energy CT

    The purpose of this study was to compare the effects of high-concentration contrast material and low-voltage CT simulated by virtual monochromatic (VM) imaging on contrast enhancement at multiphasic CT of the ...

    Makoto Sakane, Tonsok Kim, Masatoshi Hori, Hiromitsu Onishi in SpringerPlus (2014)

  3. No Access

    Article

    Endometrial cancer: preoperative staging using three-dimensional T2-weighted turbo spin-echo and diffusion-weighted MR imaging at 3.0 T: a prospective comparative study

    To prospectively assess the efficacy of 3-T magnetic resonance (MR) imaging using the three-dimensional turbo spin-echo T2-weighted and diffusion-weighted technique (3D-TSE/DW) compared with that of convention...

    Masatoshi Hori, Tonsok Kim, Hiromitsu Onishi, Izumi Imaoka in European Radiology (2013)

  4. No Access

    Article

    Diagnostic accuracy of C-arm CT during selective transcatheter angiography for hepatocellular carcinoma: comparison with intravenous contrast-enhanced, biphasic, dynamic MDCT

    This study was aimed to compare the accuracy, sensitivity, and positive predictive value of C-arm CT (CACT) during selective transcatheter angiography with those of multidetector CT (MDCT) in the detection of ...

    Hiroki Higashihara, Keigo Osuga, Hiromitsu Onishi, Atsushi Nakamoto in European Radiology (2012)

  5. No Access

    Article

    Hypervascular hepatocellular carcinomas: detection with gadoxetate disodium-enhanced MR imaging and multiphasic multidetector CT

    To retrospectively compare the accuracy of detection of hypervascular hepatocellular carcinoma (HCC) by multiphasic multidetector CT and by gadoxetate disodium-enhanced MR imaging.

    Hiromitsu Onishi, Tonsok Kim, Yasuharu Imai, Masatoshi Hori in European Radiology (2012)

  6. No Access

    Article

    18F-FDG PET/MRI fusion in characterizing pancreatic tumors: comparison to PET/CT

    To demonstrate that positron emission tomography (PET)/magnetic resonance imaging (MRI) fusion was feasible in characterizing pancreatic tumors (PTs), comparing MRI and computed tomography (CT) as map** imag...

    Mitsuaki Tatsumi, Kayako Isohashi in International Journal of Clinical Oncology (2011)

  7. No Access

    Article

    Hepatocellular nodules in liver cirrhosis: state of the art CT evaluation (perfusion CT/volume helical shuttle scan/dual-energy CT, etc.)

    The purpose of this article is to explain the role of advanced liver CT imaging, including perfusion CT, dual-energy CT, and volume helical shuttle (VHS) scanning, with regard to its clinical applications. Per...

    Masahiro Okada, Tonsok Kim, Takamichi Murakami in Abdominal Imaging (2011)

  8. No Access

    Article

    Gd-EOB-DTPA-enhanced magnetic resonance images of hepatocellular carcinoma: correlation with histological grading and portal blood flow

    To retrospectively investigate enhancement patterns of hepatocellular carcinoma (HCC) and dysplastic nodule (DN) in the hepatobiliary phase of gadolinium-ethoxybenzyl-diethylenetriamine (Gd-EOB-DTPA)-enhanced ...

    Sachiyo Kogita, Yasuharu Imai, Masahiro Okada, Tonsok Kim in European Radiology (2010)

  9. No Access

    Article

    Efficacy of double arterial phase dynamic magnetic resonance imaging with the sensitivity encoding technique versus dynamic multidetector-row helical computed tomography for detecting hypervascular hepatocellular carcinoma

    The aim of this study was to evaluate the efficacy of double arterial phase dynamic magnetic resonance imaging (MRI) with the sensitivity encoding technique (SENSE dynamic MRI) for detection of hypervascular h...

    Seishi Kumano, Masahiko Uemura, Toyoaki Haraikawa in Japanese Journal of Radiology (2009)

  10. No Access

    Article

    Angiographic evaluation of hepatic arterial damage after transarterial chemoembolization for hepatocellular carcinoma

    The aim of this study was to assess the incidence, degree, and predictors of hepatic arterial damage (HAD) after transarterial chemoembolization (TACE) for hepatocellular carcinoma (HCC).

    Noboru Maeda, Keigo Osuga, Koji Mikami, Hiroki Higashihara in Radiation Medicine (2008)

  11. No Access

    Article

    Quantitative Tissue Blood Flow Measurement of the Liver Parenchyma: Comparison Between Xenon CT and Perfusion CT

    The purpose of this study was to compare measurements of hepatic tissue blood flow (TBF) calculated by xenon and perfusion CT. Seven patients with normal liver and eight with chronic liver disease underwent bo...

    Kazuhiko Hashimoto, Takamichi Murakami, Keizo Dono in Digestive Diseases and Sciences (2007)

  12. No Access

    Article

    Single-Photon Emission Computed Tomography in the Screening for Postoperative Pulmonary Embolism

    The aim of the study was to evaluate the usefulness of serial lung perfusion scintigraphy prospectively using single-photon emission computed tomographic image (SPECT) in screening for pulmonary embolism (PE) ...

    Taishi Hata, Masataka Ikeda, Shoji Nakamori, Rei Suzuki in Digestive Diseases and Sciences (2006)

  13. No Access

    Article

    Evaluation of renal arteries in living renal donors: comparison between MDCT angiography and gadolinium-enhanced 3D MR angiography

    The purpose of this study was to clarify and compare the accuracy of contrast-enhanced computed tomography (CT) angiography using multidetector-row helical CT (MDCT angiography) and gadolinium-enhanced MR angi...

    Tonsok Kim, Takamichi Murakami, Satoru Takahashi, Masatoshi Hori in Radiation Medicine (2006)

  14. No Access

    Article

    Principles and techniques of transcatheter embolotherapy for peripheral vascular lesions

    Transcatheter embolotherapy (TCE), a common procedure for interventional radiologists, comprises transcatheter delivery of embolic agents into target vessels in order to eliminate lesions or lesion-associated ...

    Keigo Osuga, Koji Mikami, Hiroki Higashihara, Noboru Maeda in Radiation Medicine (2006)

  15. No Access

    Article

    Noninvasive method using multidetector CT for calculating the relative blood supply ratio of duplicated renal arteries in renal donors

    The aim of this study was to evaluate the correlation between the renal artery cross-sectional area measured by multidetector computed tomography (MDCT) and the nephrogram area calculated by renal arteriograph...

    Masatomo Kuwabara, Yoshifumi Narumi, Satoru Takahashi, Yoshinobu Sato in Radiation Medicine (2006)

  16. No Access

    Article

    Evaluation of Regional Liver Damage by Magnetic Resonance Imaging with Superparamagnetic Iron Oxide in Rat Liver

    The purpose of this study was to investigate whether regional liver damage could be detected by means of enhanced MR imaging with a superparamagnetic iron oxide (SH U 555A) in an ischemia–reperfusion model of ...

    Takamichi Murakami, Tonsok Kim, Manabu Takamura in Digestive Diseases and Sciences (2001)

  17. No Access

    Article

    Evaluation of Regional Liver Function by Gadolinium-EOB-DTPA-Enhanced MR Imaging

    We evaluated the role of magnetic resonance (MR)imaging withgadolinium-ethoxybenzyl-diethylenetriamine-pentaaceticacid (Gd-EOB-DTPA), in estimating regional liverfunction in a rat ischemia-reperfusion model. I...

    Junzo Shimizu, Keizo Dono, Mitsukazu Gotoh in Digestive Diseases and Sciences (1999)