T
Takafumi Hayashi
Researcher at Niigata University
Publications - 188
Citations - 2652
Takafumi Hayashi is an academic researcher from Niigata University. The author has contributed to research in topics: Pseudorandom binary sequence & Sequence. The author has an hindex of 29, co-authored 175 publications receiving 2544 citations. Previous affiliations of Takafumi Hayashi include University of Tokyo & Shimane University.
Papers
More filters
Journal ArticleDOI
Developing an MR imaging strategy for diagnosis of ovarian masses
Izumi Imaoka,Akihiko Wada,Yasushi Kaji,Takafumi Hayashi,Michiharu Hayashi,Michimasa Matsuo,Kazuro Sugimura +6 more
TL;DR: A strategy for diagnosis of ovarian masses with MR imaging incorporates signal intensity characteristics into morphologic characteristics, which is indicative of fibrothecomas and Brenner tumors.
Journal ArticleDOI
Usefulness of Diffusion-Weighted Imaging and Dynamic Contrast-Enhanced Magnetic Resonance Imaging in the Diagnosis of Prostate Transition-Zone Cancer
Takeshi Yoshizako,Akihiko Wada,Takafumi Hayashi,Koji Uchida,Masahiro Sumura,Nobue Uchida,Hajime Kitagaki,Mikio Igawa +7 more
TL;DR: Adding DW-MRI to FST2-WI in the diagnosis of prostate TZ cancer increased the diagnostic accuracy and the addition of DCE-MRI may be an option to improve the specificity and PPV of diagnosing TZcancer with FST1-WI and DW- MRI.
Journal ArticleDOI
Scrotal disorders: evaluation of testicular enhancement patterns at dynamic contrast-enhanced subtraction MR imaging.
Yuji Watanabe,Masako Dohke,Kazutoshi Ohkubo,Takayoshi Ishimori,Yoshiki Amoh,Akira Okumura,Kazushige Oda,Takafumi Hayashi,Yoshihiro Dodo,Yoichi Arai +9 more
TL;DR: Dynamic contrast-enhanced subtraction MR imaging can provide information about testicular perfusion on the basis of contrast enhancement and can be used to differentiate testicular diseases from scrotal disorders.
Journal ArticleDOI
Application of digital image analysis to pattern formation in polymer systems
TL;DR: Digital image analysis (DIA) is applied to extract various types of physical information from an image of high-order structures in polymer systems observed under an optical microscope as mentioned in this paper, which can be applied to analyze the pattern formation phenomena in general.
Journal ArticleDOI
Dynamic subtraction contrast-enhanced MR angiography: technique, clinical applications, and pitfalls.
Yuji Watanabe,Masako Dohke,Akira Okumura,Yoshiki Amoh,Takayoshi Ishimori,Kazushige Oda,Takafumi Hayashi,Atsuto Hiyama,Yoshihiro Dodo +8 more
TL;DR: Dynamic subtraction MR angiography consists of first-pass imaging of long segments of arteries by using a three-dimensional fast field echo sequence with multiple rapid bolus injections of a small dose of gadopentetate dimeglumine to enable clear demonstration of the enhanced vascular lumen.