Výsledky vyhledávání - "Hiroki Nosaka"

Akademický článek

Influence of brain atrophy using semiquantitative analysis in [123I]FP-CIT single-photon emission computed tomography by a Monte Carlo simulation study

Autor: Hiroki Nosaka, Masahisa Onoguchi, Hiroyuki Tsushima, Masaya Suda, Satoshi Kurata, Ayano Onoma, Ryosuke Murakawa

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)

Abstract The specific binding ratio (SBR) is an objective indicator of N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-[123I] iodophenyl) nortropane ([123I]FP-CIT) single-photon emission computed tomography (SPECT) that could be used for the diagnosis of P

Externí odkaz: https://doaj.org/article/26ba6210b3a543ec99b9f2c4956dc7f2

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Feasibility of using counts-per-volume approach with a new SPECT phantom to optimize the relationship between administered dose and acquisition time

Autor: Hajime Ichikawa, Takayuki Shibutani, Hideki Shimada, Koichi Okuda, Toyohiro Kato, Hiroki Nosaka, Akio Nagaki, Masahisa Onoguchi

Publikováno v: Radiological Physics and Technology. 16:244-253

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a614d759617a1959e24eb643ac98417
https://doi.org/10.1007/s12194-023-00713-6

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Development of a z-axis tilting technique using a chest phantom to reduce radiation exposure during computed tomography coronary angiography

Autor: Rumiko Nosaka, Tomokazu Shohji, Nobutaka Yanano, Kazuki Kuriyama, Hiroki Nosaka

Publikováno v: Radiation Protection Dosimetry.

Japan has the highest estimated exposure frequency of diagnostic X-rays in the world. Furthermore, the volumetric computed tomography dose index (CTDIvol) and dose length product (DLP) of computed tomography coronary angiography are relatively high i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc07156d1b8f33ac707fa024ff632901
https://doi.org/10.1093/rpd/ncad159

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Validation of Simulation Codes for Nuclear Imaging Using Digital Phantoms

Autor: Hiroki Nosaka, Hajime Ichikawa, Koichi Okuda, Michael Ljungberg, Akihiro Kikuchi, Toshimune Ito, Noriyasu Yamaki, Seiji Shirakawa, Hiroyuki Tsushima, Norikazu Matsutomo

Publikováno v: Japanese Journal of Radiological Technology. 77:41-47

Validation study of simulation codes was performed based on the measurement of a sphere phantom and the National Electrical Manufacturers Association (NEMA) body phantoms. SIMIND and Prominence Processor were used for the simulation. Both source and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8805ce947d31027e49797f8aa07feaf
https://doi.org/10.6009/jjrt.2021_jsrt_77.1.41

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