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Hirotaka Shimada
Researcher at Gunma University
Publications - 10
Citations - 46
Hirotaka Shimada is an academic researcher from Gunma University. The author has contributed to research in topics: Correction for attenuation & Primary progressive aphasia. The author has an hindex of 3, co-authored 10 publications receiving 40 citations.
Papers
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Journal ArticleDOI
CSF levels of Aβ1-38/Aβ1-40/Aβ1-42 and (11)C PiB-PET studies in three clinical variants of primary progressive aphasia and Alzheimer's disease.
Masaki Ikeda,Yuichi Tashiro,Eriko Takai,Sachiko Kurose,Naoko Fugami,Kazuhisa Tsuda,Yukiko Arisaka,Sayaka Kodaira,Yukio Fujita,Kouki Makioka,Yuji Mizuno,Hirotaka Shimada,Yasuo Harigaya,Masamitsu Takatama,Masakuni Amari,Tsuneo Yamazaki,Haruyasu Yamaguchi,Tetsuya Higuchi,Koichi Okamoto,Yoshito Tsushima,Yoshio Ikeda +20 more
TL;DR: The results of AD-CSF markers including Aβ1-38 and 11C PiB-PET in the lvPPA patients demonstrate a common pathological mechanism with the occurrence of AD.
Journal ArticleDOI
Evaluation of bone scan index change over time on automated calculation in bone scintigraphy.
Rini Shintawati,Arifudin Achmad,Tetsuya Higuchi,Hirotaka Shimada,Hiromi Hirasawa,Yukiko Arisaka,Ayako Takahashi,Takahito Nakajima,Yoshito Tsushima +8 more
TL;DR: Visual assessment showed that BONENAVI diagnosed some typical artifacts as metastases (hot spots) in bone scan images, and reading of BSIs and hot spot numbers was highly affected by acquisition time.
Journal ArticleDOI
Cerebral Microbleeds, Cerebrospinal Fluid, and Neuroimaging Markers in Clinical Subtypes of Alzheimer's Disease.
Masaki Ikeda,Sayaka Kodaira,Hiroo Kasahara,Eriko Takai,Kazuaki Nagashima,Yukio Fujita,Kouki Makioka,Kimitoshi Hirayanagi,Natsumi Furuta,Minori Furuta,Etsuko Sanada,Ayumi Kobayashi,Yasuo Harigaya,Shun Nagamine,Noriaki Hattori,Yuichi Tashiro,Kazuhiro Kishi,Hirotaka Shimada,Takayuki Suto,Hisashi Tanaka,Yasujiro Sakai,Tsuneo Yamazaki,Yukiko Tanaka,Yuko Aihara,Masakuni Amari,Haruyasu Yamaguchi,Koichi Okamoto,Masamitsu Takatama,Kenji Ishii,Tetsuya Higuchi,Yoshito Tsushima,Yoshio Ikeda +31 more
TL;DR: In this article, the authors investigated the relationship between lobar cerebral microbleeds and clinical subtypes of Alzheimer's disease (AD) and found that the number of lobar CMBs significantly increased the CSF levels of NFL in the total AD patients.
Journal ArticleDOI
Improvements in Segmentation Using Scatter and Photopeak Window Data for Attenuation Correction in Myocardial SPECT
TL;DR: A new extraction method is developed, adding a masking process to SSPAC, because the extraction of outlines was otherwise incomplete and will contribute to a widespread use of SSPac by improving the success rate in contouring.
Journal Article
[Normal database (NDB) of 123I-IMP brain perfusion SPECT examination is affected by statistical image analysis in the presence or absence of scatter correction and attenuation correction].
TL;DR: It was shown that the results from NDB coefficient of variation and 3D-SSP analysis were affected by the differences of image correction methods.