Výsledky vyhledávání - "Shinichi ARAO"

Akademický článek

Adoption of Radiation Protection Shielding During Head Computed Tomography Imaging to Reduce External Radiation Exposure.

Autor: Shinichi ARAO¹ arao@jc.kawasaki-m.ac.jp, Takanori MASUDA¹, Takayuki OKU², Atsushi ONO¹, Yasuhiko OKURA³

Publikováno v: Kawasaki Medical Journal. 2023, Vol. 49, p87-91. 5p.

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RADIATION DOSE REDUCTION AT LOW TUBE VOLTAGE WITH CORONARY ARTERY BYPASS GRAFT COMPUTED TOMOGRAPHY ANGIOGRAPHY BASED ON THE CONTRAST NOISE RATIO INDEX

Autor: Takanori Masuda, Takeshi Nakaura, Yoshinori Funama, Tomoyasu Sato, Shouko Masuda, Rumi Gotanda, Keiko Arao, Hiromasa Imaizumi, Shinichi Arao, Atsushi Ono, Junichi Hiratsuka, Kazuo Awai

Publikováno v: Radiation Protection Dosimetry. 199:527-532

To compare the radiation dose and diagnostic ability of the 100-kVp protocol, based on the contrast noise ratio (CNR) index, during coronary artery bypass graft (CABG) vessels with those of the 120-kVp protocol. For the 120-kVp scans (150 patients),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4bc3fe69acfa1a8fbcdecf00eb4eb93b
https://doi.org/10.1093/rpd/ncad049

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Prediction of Aortic Contrast Enhancement on Dynamic Hepatic Computed Tomography—Performance Comparison of Machine Learning Methods and Simulation Software

Autor: Takanori Masuda, Takeshi Nakaura, Toru Higaki, Yoshinori Funama, Tomoyasu Sato, Shouko Masuda, Takayuki Yoshiura, Shinichi Arao, Junichi Hiratsuka, Toshinori Hirai, Kazuo Awai

Publikováno v: Journal of Computer Assisted Tomography. 46:183-189

The aim of this study was to compare prediction ability between ensemble machine learning (ML) methods and simulation software for aortic contrast enhancement on dynamic hepatic computed tomography.We divided 339 human hepatic dynamic computed tomogr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae71fb8695c15e55fc2448377c04249f
https://doi.org/10.1097/rct.0000000000001273

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Usefulness of the patient-specific contrast enhancement optimizer simulation software during the whole-body computed tomography angiography

Autor: Takanori Masuda, Toru Higaki, Takeshi Nakaura, Yoshinori Funama, Yoriaki Matsumoto, Tomoyasu Sato, Tomokazu Okimoto, Rumi Gotanda, Keiko Arao, Hiromasa Imaizumi, Shinichi Arao, Junichi Hiratsuka, Kazuo Awai

Publikováno v: Heart and Vessels. 37:1446-1452

To evaluate whether the patient-specific contrast enhancement optimizer simulation software (p-COP) is useful for predicting contrast enhancement during whole-body computed tomography angiography (WBCTA). We randomly divided the patients into two gro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad36236cd83321426ce2214bebafd78a
https://doi.org/10.1007/s00380-022-02024-z

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Posteroanterior scout view of pediatric patients using computed tomography: Validation using pediatric anthropomorphic phantoms

Autor: Keiko Arao, Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Sato, Shouko Masuda, Takayuki Oku, Rumi Gotanda, Hiromasa Imaizumi, Shinichi Arao, Atsushi Ono, Junichi Hiratsuka, Kazuo Awai

Background: To compare the effect of obtaining the anteroposterior scout view (APSV) with that of posteroanterior scout view (PASV) on mammary gland dose in pediatric patients. Methods: We used a pediatric anthropomorphic phantom with a 64 detector-r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cb6c900d358b25cd2e77a1215ccc6177
https://doi.org/10.21203/rs.3.rs-2273893/v1

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Usefulness of Large Beam-shaping Filters at Different Tube Voltages of newborn chest CT

Autor: Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Sato, Kotaro Urayama, Masao Kiguchi, Takayuki Oku, Masato Yoshida, Shinichi Arao, Atsushi Ono, Junichi Hiratsuka, Kazuo Awai

Background: To investigate optimizing the use of different beam shaping filters (viz. small, medium and large) when using different tube voltages during the newborn chest computed tomography (CT) examination. Methods: We used pediatric anthropomorphi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::518e092a241b7927c4020f69d4ea446e
https://doi.org/10.21203/rs.3.rs-2122319/v1

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COMPARISON OF PEDIATRIC LENS DOSE MEASUREMENTS BETWEEN AXIAL SCAN MODE WITHOUT ACTIVE COLLIMATOR AND HELICAL SCAN MODE WITH ACTIVE COLLIMATOR BY USING A 64 DETECTOR-ROW COMPUTED TOMOGRAPHY SCANNER

Autor: Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Sato, Kotaro Urayama, Masao Kiguchi, Takayuki Oku, Shinichi Arao, Atsushi Ono, Junichi Hiratsuka, Kazuo Awai

Publikováno v: Radiation protection dosimetry. 198(19)

To investigate the pediatric eye lens entrance surface dose for both axial scan modes without an active collimator and helical scan modes with an active collimator on 64 detector-row computed tomography (CT) scanner. We used three pediatric anthropom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66da2259b50003060ed5ae0951d18460
https://pubmed.ncbi.nlm.nih.gov/36193882

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