Zobrazeno 1 - 10 of 35 pro vyhledávání: '"Naoyuki, Imada"'
1
Effect of Patient Characteristics on Vessel Enhancement in Pediatric Chest Computed Tomography Angiography
Autor: Takanori Masuda, Tetsuya Nitta, Naoyuki Imada, Yoshinori Funama, Toru Higaki, Yasutaka Baba, Yoriaki Matsumoto, Kazuo Awai, Takeshi Nakaura, Tomoyasu Sato
Publikováno v: Canadian Association of Radiologists Journal. 70:181-185
Introduction To evaluate the effect of sex, age, height, cardiac output (CO), total body weight (TBW), body surface area (BSA), and lean body weight (LBW) on vessel enhancement of the ascending aorta in pediatric chest computed tomography angiography
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1042ad89ed7a15b27ebaec08fe91458
https://doi.org/10.1016/j.carj.2018.08.005
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2
Machine-learning integration of CT histogram analysis to evaluate the composition of atherosclerotic plaques: Validation with IB-IVUS
Autor: Toru Higaki, Yasutaka Baba, Takanori Masuda, Noritaka Noda, Tomokazu Okimoto, Naoyuki Imada, Yoshinori Funama, Tomoyasu Sato, Takeshi Nakaura, Kazuo Awai
Publikováno v: Journal of Cardiovascular Computed Tomography. 13:163-169
Background To determine whether machine learning with histogram analysis of coronary CT angiography (CCTA) yields higher diagnostic performance for coronary plaque characterization than the conventional cut-off method using the median CT number. Meth
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::816b7b5bec8b427ff4ea3d276c806bfb
https://doi.org/10.1016/j.jcct.2018.10.018
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3
Radiation Dose Reduction at Low Tube Voltage CCTA Based on the CNR Index
Autor: Kazuo Awai, Tomokazu Okimoto, Yukari Yamashita, Naoyuki Imada, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Satou, Takanori Masuda
Publikováno v: Academic Radiology. 25:1298-1304
We compared the radiation dose and diagnostic accuracy on 120- and 100-kVp coronary computed tomography angiography (CCTA) scans whose contrast-to-noise ratio (CNR) was the same.We studied 1311 coronary artery segments from 100 patients. For 120-kVp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9e3886786349e82e344a6baa5d9ab4a
https://doi.org/10.1016/j.acra.2018.01.019
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4
Effect of Patient Characteristics on Vessel Enhancement at Lower Extremity CT Angiography
Autor: Masao Kiguchi, Naoyuki Imada, Takeshi Nakaura, Takanori Masuda, Yukari Yamashita, Tomoyasu Sato, Kazuo Awai, Yoshinori Funama, Toru Higaki
Publikováno v: Korean Journal of Radiology
Objective To evaluate the effect of patient characteristics on popliteal aortic contrast enhancement at lower extremity CT angiography (LE-CTA) scanning. Materials and Methods Prior informed consent to participate was obtained from all 158 patients.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ce81ad3ca60529627503fddc6dc872c
http://europepmc.org/articles/PMC5840055
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5
Does the Tube Voltage Affect the Characterization of Coronary Plaques on 100- and 120-kVp Computed Tomography Scans
Autor: Takanori Masuda, Yoriaki Matsumoto, Kazuo Awai, Noritaka Noda, Takeshi Nakaura, Yoshinori Funama, Tomoyasu Sato, Tomokazu Okimoto, Naoyuki Imada, Yukari Yamashita
Publikováno v: Journal of computer assisted tomography. 43(3)
Objective The aim of this study was to compare the diagnostic performance of 100- and 120-kVp coronary computed tomography (CT) angiography (CCTA) scans for the identification of coronary plaque components. Methods We included 116 patients with coron
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdb3ac4a42324f0481bf778884a3556e
https://pubmed.ncbi.nlm.nih.gov/30762654
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6
Study of CT Automatic Exposure Control System (CT-AEC) Optimization in CT Angiography of Lower Extremity Artery by Considering Contrast-to-Noise Ratio
Autor: Naoya Maruyama, Tomoyasu Sato, Satoshi Inada, Takanori Masuda, Yukari Yamashita, Naoyuki Imada
Publikováno v: Japanese Journal of Radiological Technology. 72:21-30
PURPOSE To evaluate the image quality and effect of radiation dose reduction by setting for computed tomography automatic exposure control system (CT-AEC) in computed tomographic angiography (CTA) of lower extremity artery. METHODS Two methods of set
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fc8b8f46cf993858b42a23d4080161d
https://doi.org/10.6009/jjrt.2016_jsrt_72.1.21
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7
Automated determination of cardiac rest period on whole-heart coronary magnetic resonance angiography by extracting high-speed motion of coronary arteries
Autor: Hiroya Asou, Tomoyasu Sato, Naoyuki Imada, Katsuhiro Ichikawa, Yuichi Nishiyama
Publikováno v: Clinical imaging. 52
The aim of the present study was to develop an automated system for determining the cardiac rest period during whole-heart coronary magnetic resonance angiography (CMRA) examination.Ten healthy male volunteers (25-51 years old, 50-77 beats/min heart
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::852c3b439d7211cb08f856da85529ea2
https://pubmed.ncbi.nlm.nih.gov/30098491
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8
Radiation Dose Reduction With a Low-Tube Voltage Technique for Pediatric Chest Computed Tomographic Angiography Based on the Contrast-to-Noise Ratio Index
Autor: Tomoyasu Sato, Masao Kiguchi, Takanori Masuda, Naoyuki Imada, Yukari Yamashita, Yoshinori Funama, Takeshi Nakaura, Masahiro Tahara, Kazuo Awai
Publikováno v: Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes. 69(4)
Introduction The aim of this study was to evaluate the radiation dose and image quality at low tube-voltage pediatric chest computed tomographic angiography (CTA) that applies the same contrast-to-noise ratio (CNR) index as the standard tube voltage
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de54ef88ff6bc985b30efd206cffe633
https://pubmed.ncbi.nlm.nih.gov/30249409
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9
CT Angiography of Suspected Peripheral Artery Disease: Comparison of Contrast Enhancement in the Lower Extremities of Patients Undergoing and Those Not Undergoing Hemodialysis
Autor: Kazuo Awai, Takanori Masuda, Tomokazu Okimoto, Naoyuki Imada, Takeshi Nakaura, Tomoyasu Sato, Yoshinori Funama
Publikováno v: AJR. American journal of roentgenology. 208(5)
The objective of our study was to compare contrast enhancement on CT angiography (CTA) images of the lower extremity in patients with suspected peripheral artery disease who did not undergo hemodialysis (HD) and patients who were scanned before or af
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d33a4d097f87afac9b938cf6bef003b
https://pubmed.ncbi.nlm.nih.gov/28177650
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10
Prediction of Aortic Enhancement on Coronary CTA Images Using a Test Bolus of Diluted Contrast Material
Autor: Fuminari Tatsugami, Tomoyasu Sato, Takanori Masuda, Takuji Yamagami, Kazuo Awai, Naoyuki Imada, Yoshinori Funama
Publikováno v: Academic Radiology. 21:1542-1546
The purpose of our study was to compare test bolus techniques using undiluted or diluted contrast material for their ability to predict aortic enhancement on coronary computed tomographic angiography (c-CTA) images.We divided 200 consecutive patients
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::643fe06bb664a9f6272598d94f30a9da
https://doi.org/10.1016/j.acra.2014.07.002
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