The Experts below are selected from a list of 11190 Experts worldwide ranked by ideXlab platform
Yukichi Tanahashi - One of the best experts on this subject based on the ideXlab platform.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:AbstraCT Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols ( p p Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols (p < 0.05). Mean DLP with 210-mA (533.8 mGy cm) was reduced by 31% from that with 450-mA (768.4 mGy cm) and by 38% from that with no-limitation protocol (861.3 mGy cm), respeCTively. Image quality was slightly degraded (p < 0.017) with 210 mA relative to the others in thorax and pelvis, but no difference was found in diagnostic acceptability. Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
Masayuki Kanematsu - One of the best experts on this subject based on the ideXlab platform.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:AbstraCT Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols ( p p Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols (p < 0.05). Mean DLP with 210-mA (533.8 mGy cm) was reduced by 31% from that with 450-mA (768.4 mGy cm) and by 38% from that with no-limitation protocol (861.3 mGy cm), respeCTively. Image quality was slightly degraded (p < 0.017) with 210 mA relative to the others in thorax and pelvis, but no difference was found in diagnostic acceptability. Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT angiography with low tube voltage and low concentration contrast material to reduce radiation dose and iodine load
American Journal of Roentgenology, 2014Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Haruo Watanabe, Kyongtae T BaeAbstract:OBJECTIVE. The purpose of this study was to prospeCTively evaluate the contrast enhancement, vascular depiCTion, image quality, and radiation dose of low-tube-voltage Whole-Body CT angiography (CTA) performed with low-concentration iodinated contrast material. SUBJECTS AND METHODS. Whole-Body CTA was performed on 109 patients with a 64-MDCT scanner. Patients were randomized into three groups: CTA with 240-mg/mL contrast material at 80 kVp (240-80 group), 300-mg/mL at 80 kVp (300-80 group), and 370-mg/mL at 120 kVp (370-120 group). Signal-to-noise ratio (SNR), arterial depiCTion, image quality, and radiation dose were assessed. Figure of merit was computed to normalize signal-to-noise ratio, estimated effeCTive dose, and iodine weight. RESULTS. In the 240-80 group, the mean load of administered iodine was 21.6 g; for the 300-80 group, 26.8 g; and the 370-120 group, 34.0 g (p < 0.05). The ranges of mean vascular enhancement were 508–521 HU, 546–593 HU, and 435–442 HU (p < 0.05). Arterial depiCTion and image...
Hiroshi Kondo - One of the best experts on this subject based on the ideXlab platform.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:AbstraCT Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols ( p p Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols (p < 0.05). Mean DLP with 210-mA (533.8 mGy cm) was reduced by 31% from that with 450-mA (768.4 mGy cm) and by 38% from that with no-limitation protocol (861.3 mGy cm), respeCTively. Image quality was slightly degraded (p < 0.017) with 210 mA relative to the others in thorax and pelvis, but no difference was found in diagnostic acceptability. Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT angiography with low tube voltage and low concentration contrast material to reduce radiation dose and iodine load
American Journal of Roentgenology, 2014Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Haruo Watanabe, Kyongtae T BaeAbstract:OBJECTIVE. The purpose of this study was to prospeCTively evaluate the contrast enhancement, vascular depiCTion, image quality, and radiation dose of low-tube-voltage Whole-Body CT angiography (CTA) performed with low-concentration iodinated contrast material. SUBJECTS AND METHODS. Whole-Body CTA was performed on 109 patients with a 64-MDCT scanner. Patients were randomized into three groups: CTA with 240-mg/mL contrast material at 80 kVp (240-80 group), 300-mg/mL at 80 kVp (300-80 group), and 370-mg/mL at 120 kVp (370-120 group). Signal-to-noise ratio (SNR), arterial depiCTion, image quality, and radiation dose were assessed. Figure of merit was computed to normalize signal-to-noise ratio, estimated effeCTive dose, and iodine weight. RESULTS. In the 240-80 group, the mean load of administered iodine was 21.6 g; for the 300-80 group, 26.8 g; and the 370-120 group, 34.0 g (p < 0.05). The ranges of mean vascular enhancement were 508–521 HU, 546–593 HU, and 435–442 HU (p < 0.05). Arterial depiCTion and image...
Toshiharu Miyoshi - One of the best experts on this subject based on the ideXlab platform.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:AbstraCT Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols ( p p Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols (p < 0.05). Mean DLP with 210-mA (533.8 mGy cm) was reduced by 31% from that with 450-mA (768.4 mGy cm) and by 38% from that with no-limitation protocol (861.3 mGy cm), respeCTively. Image quality was slightly degraded (p < 0.017) with 210 mA relative to the others in thorax and pelvis, but no difference was found in diagnostic acceptability. Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT angiography with low tube voltage and low concentration contrast material to reduce radiation dose and iodine load
American Journal of Roentgenology, 2014Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Haruo Watanabe, Kyongtae T BaeAbstract:OBJECTIVE. The purpose of this study was to prospeCTively evaluate the contrast enhancement, vascular depiCTion, image quality, and radiation dose of low-tube-voltage Whole-Body CT angiography (CTA) performed with low-concentration iodinated contrast material. SUBJECTS AND METHODS. Whole-Body CTA was performed on 109 patients with a 64-MDCT scanner. Patients were randomized into three groups: CTA with 240-mg/mL contrast material at 80 kVp (240-80 group), 300-mg/mL at 80 kVp (300-80 group), and 370-mg/mL at 120 kVp (370-120 group). Signal-to-noise ratio (SNR), arterial depiCTion, image quality, and radiation dose were assessed. Figure of merit was computed to normalize signal-to-noise ratio, estimated effeCTive dose, and iodine weight. RESULTS. In the 240-80 group, the mean load of administered iodine was 21.6 g; for the 300-80 group, 26.8 g; and the 370-120 group, 34.0 g (p < 0.05). The ranges of mean vascular enhancement were 508–521 HU, 546–593 HU, and 435–442 HU (p < 0.05). Arterial depiCTion and image...
Satoshi Goshima - One of the best experts on this subject based on the ideXlab platform.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:AbstraCT Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols ( p p Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT with high heat capacity x ray tube and automated tube current modulation effeCT of tube current limitation on contrast enhancement image quality and radiation dose
European Journal of Radiology, 2015Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Yukichi TanahashiAbstract:Purpose To evaluate the effeCT of tube current limitation on contrast enhancement, image quality, and radiation dose in Whole-Body 64-deteCTor CT with a high heat-capacity X-ray tube and automated tube current modulation. Materials and methods One hundred eighteen patients were randomized into three Whole-Body CT protocols: tube current limitation at 210 mA, 450 mA, and no limitation. Signal-to-noise ratio (SNR), dose-length produCT (DLP), estimated effeCTive dose (ED), and image quality were assessed. Results Mean SNR of aorta was comparable among protocols, but that of liver was somewhat lower in 210-mA than in 450-mA and no-limitation protocols (p < 0.05). Mean DLP with 210-mA (533.8 mGy cm) was reduced by 31% from that with 450-mA (768.4 mGy cm) and by 38% from that with no-limitation protocol (861.3 mGy cm), respeCTively. Image quality was slightly degraded (p < 0.017) with 210 mA relative to the others in thorax and pelvis, but no difference was found in diagnostic acceptability. Conclusion For Whole-Body CT using multideteCTor CT mounted with a high heat-capacity X-ray tube, an appropriate tube current limitation setting may help reduce excessive radiation dose without significant compromise in diagnostic acceptability.
-
Whole Body CT angiography with low tube voltage and low concentration contrast material to reduce radiation dose and iodine load
American Journal of Roentgenology, 2014Co-Authors: Masayuki Kanematsu, Hiroshi Kondo, Toshiharu Miyoshi, Satoshi Goshima, Yoshifumi Noda, Haruo Watanabe, Kyongtae T BaeAbstract:OBJECTIVE. The purpose of this study was to prospeCTively evaluate the contrast enhancement, vascular depiCTion, image quality, and radiation dose of low-tube-voltage Whole-Body CT angiography (CTA) performed with low-concentration iodinated contrast material. SUBJECTS AND METHODS. Whole-Body CTA was performed on 109 patients with a 64-MDCT scanner. Patients were randomized into three groups: CTA with 240-mg/mL contrast material at 80 kVp (240-80 group), 300-mg/mL at 80 kVp (300-80 group), and 370-mg/mL at 120 kVp (370-120 group). Signal-to-noise ratio (SNR), arterial depiCTion, image quality, and radiation dose were assessed. Figure of merit was computed to normalize signal-to-noise ratio, estimated effeCTive dose, and iodine weight. RESULTS. In the 240-80 group, the mean load of administered iodine was 21.6 g; for the 300-80 group, 26.8 g; and the 370-120 group, 34.0 g (p < 0.05). The ranges of mean vascular enhancement were 508–521 HU, 546–593 HU, and 435–442 HU (p < 0.05). Arterial depiCTion and image...
