Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Nobuyoshi, Ohya"'
Autor:
Mana Akamatsu, Yasuo Yamashita, Go Akamatsu, Yuji Tsutsui, Nobuyoshi Ohya, Yasuhiko Nakamura, Masayuki Sasaki
Publikováno v:
Asia Oceania Journal of Nuclear Medicine and Biology, Vol 2, Iss 1, Pp 24-29 (2014)
Objective: The aim of this study was to evaluate the influences of reconstruction and attenuation correction on the differences in the radioactivity distributions in 123I brain SPECT obtained by the hybrid SPECT/CT device. Methods: We used the 3-dime
Externí odkaz:
https://doaj.org/article/e2303279c88d430f85304d06e093e2c3
Autor:
Nobuyoshi Ohya, Katsuhiko Mitsumoto, Masayuki Sasaki, Koichiro Abe, Kaori Ishikawa, Takafumi Taniguchi, Shingo Baba, Go Akamatsu
Publikováno v:
Clinical Nuclear Medicine. 38:407-412
The PET image quality of overweight patients and patients who receive low injected doses deteriorates because of increases in statistical noise. The purpose of this study was to investigate the benefits of the point-spread function (PSF) and time-of-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea854f075b43b85a6ce0f71cddd0490d
https://doi.org/10.1097/rlu.0b013e31828da3bd
https://doi.org/10.1097/rlu.0b013e31828da3bd
Autor:
Hidetaka Arimura, Hiroshi Honda, Nobuyoshi Ohya, Ohara Tomoyuki, Chiaki Tokunaga, Fukai Toyofuku, Yasuo Yamashita, Takashi Yoshiura, Yasuhiko Nakamura, Koji Kobayashi
Publikováno v:
Journal of Biomedical Science and Engineering. :1090-1098
Alzheimer’s disease (AD) is a dementing disorder and one of the major public health problems in countries with greater longevity. The cerebral cortical thickness and cerebral blood flow (CBF), which are considered as morphological and functional im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0772d5d98e26bd9624ed307c981de86
https://doi.org/10.4236/jbise.2013.611137
https://doi.org/10.4236/jbise.2013.611137
Autor:
Tiejiao, Zhang, Yosuke, Tachiya, Yuichi, Sakaguchi, Katsuhiko, Mitsumoto, Tatsuya, Mitsumoto, Nobuyoshi, Ohya, Masayuki, Sasaki
Publikováno v:
福岡醫學雜誌. 101(11):238-246
Objective : The aim of this study was to determine an appropriate threshold value for delineation of the target volume in PET/CT and to investigate whether we could delineate a target volume by phantom studies. Methods : A phantom consisted of six sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::66ed9955be3ecfc2b496aadc874164ca
http://hdl.handle.net/2324/18984
http://hdl.handle.net/2324/18984
Autor:
Yuichi Sakaguchi, Noriko Mizoguchi, Nobuyoshi Ohya, Yoshihiko Onizuka, Koichiro Abe, Tatsuya Mitsumoto, Koichiro Kaneko, Katsuhiko Mitsumoto, Kazuhiko Himuro, Shingo Baba, Masayuki Sasaki
Publikováno v:
Annals of Nuclear Medicine. 24(8):585-591
We evaluated the partial volume effect in PET/CT images and developed a simple correction method to address this problem. Six spheres and the background in the phantom were filled with F-18 and we thus obtained 4 different sphere-to-background (SB) r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53a86973d7d52d1dc45eccb7d0b86908
http://hdl.handle.net/2324/26103
http://hdl.handle.net/2324/26103
Autor:
Nobuyoshi Ohya, Yosuke Tachiya, Masayuki Sasaki, Yuichi Sakaguchi, Tiejiao Zhang, Katsuhiko Mitsumoto, Tatsuya Mitsumoto
Publikováno v:
Annals of Nuclear Medicine. 24(7):507-514
The aim of this study was to investigate the utility of gated PET/CT and CT attenuation correction (AC) for the quantitation of radioactivity. An ellipse phantom containing six spheres, ranging from 10 to 37 mm in diameter, was filled with 36.7 kBq/m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8683ca90facfc3a13d5a20f6b28d618c
http://hdl.handle.net/2324/26102
http://hdl.handle.net/2324/26102
Autor:
Masayuki Sasaki, Takashi Yoshiura, Hirofumi Sawamoto, Futoshi Mihara, Koichiro Abe, Nobuyoshi Ohya, Koichiro Kaneko, Hiroshi Honda, Hirofumi Koga, Takato Morioka
Publikováno v:
Nuclear Medicine Communications. 27:893-899
Objectives The aim of this study was to evaluate the usefulness of (123)I-iomazenil (IMZ) single photon emission computed tomography (SPECT) for the pre-surgical identification of epileptogenic areas in patients with temporal lobe epilepsy and to com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::692262e45d83eec4825c5a30b6b80559
https://doi.org/10.1097/01.mnm.0000243380.79872.32
https://doi.org/10.1097/01.mnm.0000243380.79872.32
Autor:
SHIGEO ANAI, NOBUYOSHI OHYA
Publikováno v:
Japanese Journal of Radiological Technology. 51:858-862
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79175d46a4454af06f281554764fc3b2
https://doi.org/10.6009/jjrt.kj00001352464
https://doi.org/10.6009/jjrt.kj00001352464
Autor:
Nobuyoshi Ohya, Yuichi Sakaguchi, Koichiro Abe, Tiejiao Zhang, Shingo Baba, Yosuke Tachiya, Katsuhiko Mitsumoto, Masayuki Sasaki
Publikováno v:
Nuclear medicine communications. 32(12)
The aim of this study was to determine the optimal acquisition scan protocol for deep inspiration breath-hold (BH) fluoro-2-deoxy-D-glucose positron emission tomography (PET) for the examination of thoracic lesions.We studied 32 thoracic lesions in 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9fd3c9d02efc21b75836d782578b51b
https://pubmed.ncbi.nlm.nih.gov/21968434
https://pubmed.ncbi.nlm.nih.gov/21968434
Autor:
Nobuyoshi Ohya, Toyoyuki Katoh
Publikováno v:
Japanese Journal of Radiological Technology. 51:1050
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9e72467e4e6ac56b9c81878d7c315a3
https://doi.org/10.6009/jjrt.kj00001352625
https://doi.org/10.6009/jjrt.kj00001352625