Search Results - "Yoshitake, Takayasu"

Clinical indications for the use of computed tomography in children who underwent frequent computed tomography: a near-13-year follow-up retrospective study at a single institution in Japan by Yoshitake, Takayasu, Ono, Koji, Ishiguchi, Tsuneo, Maeda, Toru, Kai, Michiaki

“…Recent studies suggest a causal link of childhood leukemia and brain tumor with repeated computed tomography (CT) scans. The reasons why frequent CT scans are…”
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Quantitative Analysis of the Clinical Reasons Influencing the Frequency of Pediatric Head CT Examinations: A Single-Center Observation Study by Yoshitake, Takayasu, Miyazaki, Osamu, Kitamura, Masayuki, Ono, Koji, Kai, Michiaki

“…Epidemiological studies on radiation exposure from pediatric CT scans have attracted attention in terms of radiological protection. These studies have not…”
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Calculating Patient-specific Organ Doses from Adult Body CT Scans by Monte Carlo Analysis Using Male-Individual Voxel Phantoms by Kamei, Osamu, Ojima, Mitsuaki, Yoshitake, Takayasu, Ono, Koji, Nishijima, Kohjiro, Kai, Michiaki

“…ABSTRACTComputed tomography (CT) dose calculators such as the WAZA-ARI are useful for estimating the radiation dose from CT examination. This study determined…”
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Comparison of pediatric lens scattered dose measurements between axial 40-mm and helical 160-mm detector width computed tomography scan modes by Masuda, Takanori, Kiguchi, Masao, Fujioka, Chikako, Oku, Takayuki, Ishibashi, Toru, Katsunuma, Yasushi, Yoshitake, Takayasu, Abe, Shuji, Awai, Kazuo

“…Background Reports comparing field lens doses between helical scans with a 40-mm detector width and axial scans with a 160-mm detector width using different…”
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Impact of beam collimation of z-overscanning on dose to the lens and thyroid gland in paediatric thoracic computed tomography imaging by Masuda, Takanori, Kiguchi, Masao, Fujioka, Chikako, Oku, Takayuki, Ishibashi, Toru, Katsunuma, Yasushi, Yoshitake, Takayasu, Abe, Shuji, Awai, Kazuo

“…Background Adaptive collimation reduces the dose deposited outside the imaged volume along the z-axis. An increase in the dose deposited outside the imaged…”
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Comparison of the equivalent doses of the eye lenses, thyroid, and mammary gland among three pediatric and one adult anthropomorphic phantom during the chest CT examinations using a 40 mm volume helical scan by Masuda, Takanori, Kiguchi, Masao, Fujioka, Chikako, Oku, Takayuki, Ishibashi, Toru, Katsunuma, Yasushi, Yoshitake, Takayasu, Abe, Shuji, Awai, Kazuo

“…Abstract Equivalent doses for the eye lenses, thyroid, and mammary glands were measured and compared between one adult and three pediatric anthropomorphic…”
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Effectiveness of low tube voltage scan in the exposure dose for lenses during paediatric thoracic CT examination: anthropomorphic phantoms study by Masuda, Takanori, Kiguchi, Masao, Fujioka, Chikako, Oku, Takayuki, Ishibashi, Toru, Katsunuma, Yasushi, Yoshitake, Takayasu, Abe, Shuji, Awai, Kazuo

“…Abstract To determine whether using lower-tube voltage reduces the scattered dose for the lens during paediatric thoracic computed tomography (CT). Two…”
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Numerical Analysis of Organ Doses Delivered During Computed Tomography Examinations Using Japanese Adult Phantoms with the WAZA-ARI Dosimetry System by Takahashi, Fumiaki, Sato, Kaoru, Endo, Akira, Ono, Koji, Ban, Nobuhiko, Hasegawa, Takayuki, Katsunuma, Yasushi, Yoshitake, Takayasu, Kai, Michiaki

“…ABSTRACTA dosimetry system for computed tomography (CT) examinations, named WAZA-ARI, is being developed to accurately assess radiation doses to patients in…”
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AUTOMATIC ACQUISITION OF CT RADIATION DOSE DATA: USING THE DIAGNOSTIC REFERENCE LEVEL FOR RADIATION DOSE OPTIMIZATION by Nakada, Yoshihiro, Okuda, Yasuo, Tsuge, Tatsuya, Suzuki, Jyunichi, Sakamoto, Hiroshi, Yamamoto, Tsuyoshi, Konishi, Yasuhiko, Tsujimoto, Takeshi, Nishiki, Shigeo, Satoh, Toshimitsu, Aoyama, Nobukazu, Morimoto, Kyohei, Aita, Masamichi, Yamashita, Yusuke, Yoshitake, Takayasu, Mukai, Masami, Yokooka, Yuki, Yokohama, Noriya, Akahane, Keiichi

“…The present work describes that we try to construct a system that collects dose information that performed CT examination from multiple facilities and unified…”
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WAZA-ARI: computational dosimetry system for X-ray CT examinations II: Development of web-based system by Ban, Nobuhiko, Takahashi, Fumiaki, Ono, Koji, Hasegawa, Takayuki, Yoshitake, Takayasu, Katsunuma, Yasushi, Sato, Kaoru, Endo, Akira, Kai, Michiaki

“…A web-based dose computation system, WAZA-ARI, is being developed for patients undergoing X-ray CT examinations. The system is implemented in Java on a Linux…”
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WAZA-ARI: computational dosimetry system for X-ray CT examinations. I. Radiation transport calculation for organ and tissue doses evaluation using JM phantom by Takahashi, Fumiaki, Sato, Kaoru, Endo, Akira, Ono, Koji, Yoshitake, Takayasu, Hasegawa, Takayuki, Katsunuma, Yasushi, Ban, Nobuhiko, Kai, Michiaki

“…A web system of WAZA-ARI is being developed to assess radiation dose to a patient in a computed tomography examination. WAZA-ARI uses one of organ dose data…”
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Comparison of a digital flat-panel versus screen-film, photofluorography and storage-phosphor systems by detection of simulated lung adenocarcinoma lesions using hard copy images by ONO, K, YOSHITAKE, T, AKAHANE, K, YAMADA, Y, MAEDA, T, KAI, M, KUSAMA, T

“…The purpose of this study was to compare hard copy images from a flat-panel detector digital radiography system with conventional radiography,…”
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