Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Yasuhiko OKURA"'
Autor:
Megumi, Yamamoto, Yasuhiko, Okura
Publikováno v:
Japanese Journal of Radiological Technology. 78:129-139
DSA processing is not applied to the coronary artery because heavy artifacts will be generated in DSA images by heart beats and breathing of the patient. However, DSA images of coronary artery contribute to the accuracy of diagnosis and elucidating n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10fa306db8ec65666d3f3b670f5e410d
https://doi.org/10.6009/jjrt.780203
https://doi.org/10.6009/jjrt.780203
Publikováno v:
Kawasaki Medical Journal; 2023, Vol. 49, p87-91, 5p
Autor:
Atsushi Ono, Tatsuhiro Gotanda, Hajime Harauchi, Akiko Hayashi, Rumi Gotanda, Akihiko Tabuchi, Shinichi Arao, Yasuhiko Okura
Publikováno v:
IFMBE Proceedings ISBN: 9789811090349
Tumor volumetric measurement using liver 3D-MR imaging tends to cause measurement errors because the liver moves with the diaphragm during imaging while the patient is holding the breath. The breath holding method of the patient when 3D-MR imaging fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::783f7692e2a139af3080402d8d6d7cf6
https://doi.org/10.1007/978-981-10-9035-6_5
https://doi.org/10.1007/978-981-10-9035-6_5
Autor:
Yutaka Kobayashi, Keiji Umetani, Motomu Minamiyama, James T. Pearson, Yutaka Fujii, Mikiyasu Shirai, Syuji Inamori, Masuhide Yakehiro, Yasuhiko Okura, Naoki Yahagi
Publikováno v:
ASAIO Journal. 59:374-379
Currently, nonpulsatile selective cerebral perfusion for cerebroprotection against thoracic aortic aneurysm is used in clinical settings. We performed synchrotron radiation microangiography to determine the effects on selective cerebral perfusion mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5c440712f4988a6f591ddb0ac6df39e
https://doi.org/10.1097/mat.0b013e3182976939
https://doi.org/10.1097/mat.0b013e3182976939
Publikováno v:
Japanese Journal of Radiological Technology. 66:1449-1456
With the screen/film X-rays imaging system, Wakamatsu et al. reported that there was a close relationship between the square root of spectral signal-to-noise ratio area and sensitivity measure d' in receiver operating characteristic (ROC) analysis. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f3ef7ee638874beb8161913be474fc7
https://doi.org/10.6009/jjrt.66.1449
https://doi.org/10.6009/jjrt.66.1449
Autor:
Takayuki Ishida, Yasuhiko Okura, Masaharu Ishihara, Masayuki Kagemoto, Kengo Harada, Megumi Yamamoto
Publikováno v:
Journal of Digital Imaging. 22:319-325
The purpose of this research is to develop a new method of digital subtraction angiography (DSA) that can be applied to real time with reducing motion artifacts caused by heart movement and respiration. To create the mask image for DSA, the maximum p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59093e5e242df87eda2c36c0e9d25c4b
https://doi.org/10.1007/s10278-008-9108-1
https://doi.org/10.1007/s10278-008-9108-1
Fundamental Technology for Computer-aided Diagnosis. 3. Image Processing in Spatial Frequency Domain
Autor:
Yasuhiko, Okura
Publikováno v:
Japanese Journal of Radiological Technology. 64:852-861
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90b3f1569b155a4de975b1036f6c3f34
https://doi.org/10.6009/jjrt.64.852
https://doi.org/10.6009/jjrt.64.852
Autor:
Yasuhiko Okura, Hiroshi Takeda, Yuichiro Yamamoto, Kiyonari Inamura, Yoshiharu Sukenobu, Susumu Kousaka, Yasushi Matsumura
Publikováno v:
Computerized Medical Imaging and Graphics. 27:121-128
First, history of PACS in Japan from 1982 to 2002 has been investigated. By 2002 total of 1468 PACS units have been installed. Of these, 1174 are small-size PACS with less than four image display terminals, 203 are medium-size with 5-14 terminals, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f666597f27c909b022575b4f1e7a98f
https://doi.org/10.1016/s0895-6111(02)00085-x
https://doi.org/10.1016/s0895-6111(02)00085-x
Autor:
Hiroshi Inada, Hiroko Kou, Hajime Harauchi, Kuniyuki Hidaka, Kiyonari Inamura, Hiromichi Yokoyama, Yasuhiko Okura, Yasushi Matsumura
Publikováno v:
Journal of Digital Imaging. 15:210-215
The purpose of this study is to evaluate the influence of MPEG-2 compression scheme on coronary angiography and to search the highest compression ratio at which no significant effect to accuracy of assessment of stenosis severity occurs. Forty-Four d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eacf5e4a0654c97ddba477bd166ed516
https://doi.org/10.1007/s10278-002-0013-8
https://doi.org/10.1007/s10278-002-0013-8
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 70(11)
With the digitization of general radiography, there are some concerns about an increase in radiation exposure doses. Therefore, the exposure index (EI) as a new dose index was proposed in 2008 by IEC. However, the settings for the interest region and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa871ddda629c2603505bf349f33606e
https://pubmed.ncbi.nlm.nih.gov/25410331
https://pubmed.ncbi.nlm.nih.gov/25410331