The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Zong Jun Zhang - One of the best experts on this subject based on the ideXlab platform.
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dual energy ct Lung Ventilation perfusion imaging for diagnosing pulmonary embolism
European Radiology, 2013Co-Authors: Long Jiang Zhang, Chang Sheng Zhou, Joseph U Schoepf, Hui Xue Sheng, Aleksander W Krazinski, Justin R Silverman, Felix G Meinel, Yan E Zhao, Zong Jun ZhangAbstract:Objectives To evaluate the feasibility and findings of combined dual-energy computed tomography (DECT) Lung Ventilation/perfusion imaging in patients with suspected pulmonary embolism (PE).
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dual energy ct Lung Ventilation perfusion imaging for diagnosing pulmonary embolism
European Radiology, 2013Co-Authors: Long Jiang Zhang, Chang Sheng Zhou, Joseph U Schoepf, Hui Xue Sheng, Aleksander W Krazinski, Justin R Silverman, Felix G Meinel, Yan E Zhao, Zong Jun ZhangAbstract:To evaluate the feasibility and findings of combined dual-energy computed tomography (DECT) Lung Ventilation/perfusion imaging in patients with suspected pulmonary embolism (PE). This study was institutional review board-approved and written informed consent was obtained from each patient. Thirty-two subjects (aged 11–61 years) underwent combined xenon-enhanced Ventilation and iodine-enhanced perfusion DECT. Ventilation, perfusion and morphological information were visually interpreted. Ventilation/perfusion information was classified as mismatch (differing patterns) or match (concordant patterns). Adverse reactions and radiation doses were recorded for each subject. Of 32 patients undergoing xenon-enhanced DECT, six patients reported adverse reactions (shortness of breath, n = 2; mild dizziness, n = 3; limb numbness, n = 1). Twenty-eight of 32 patients could be included into the data analysis. PE was detected in 10/28 patients. PE-related Ventilation/perfusion mismatch was found in 17 Lung lobes in 8/10 patients and matched Ventilation/perfusion was detected in 2 patients. Eighteen patients had no PE. In this group, there was no case of a Ventilation/perfusion mismatch. Matched Ventilation/perfusion impairment was seen in one patient. The overall radiation dose from two DECT acquisitions was 4.8 ± 1.4 mSv (range 2.7-7.5 mSv). DECT Lung Ventilation/perfusion imaging is feasible and can visualise Ventilation/perfusion match or mismatch in patients with suspected PE. • Combined dual-energy CT Lung Ventilation/perfusion imaging is feasible. • Combined dual-energy CT Ventilation/perfusion imaging provides Lung morphological and functional information. • Dual-energy CT can demonstrate Ventilation/perfusion mismatch in patients with pulmonary embolism.
Hoijun Yoo - One of the best experts on this subject based on the ideXlab platform.
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a 10 4 mw electrical impedance tomography soc for portable real time Lung Ventilation monitoring system
IEEE Journal of Solid-state Circuits, 2015Co-Authors: Sunjoo Hong, Jae Hyuk Lee, Joonsung Bae, Hoijun YooAbstract:An electrical impedance tomography (EIT) SoC is proposed for the portable real-time Lung Ventilation monitoring system. The proposed EIT SoC is integrated into belt-typefabric system with 32 electrodes and can show the dynamic images of the Lung Ventilation on the mobile devices. To get high fidelity images, a T-switch is adopted for high off-isolation between electrodes more than 60 dB, and I/Q signal generation and demodulation can obtain both real and imaginary part of images. For the real-time imaging, an on-chip fast demodulation scheme is proposed, and it can also reduce speed requirements of ADC for low-power consumption. The proposed EIT SoC of 5.0 mm × 5.0 mm is fabricated in 0.18 µm CMOS technology, and consumes only 10.4 mW with 1.8 V supply. As a result, EIT images were reconstructed with 97.3% of accuracy and up to 20 frames/s real-time Lung images can be displayed on the mobile devices.
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a 10 4 mw electrical impedance tomography soc for portable real time Lung Ventilation monitoring system
Asian Solid-State Circuits Conference, 2014Co-Authors: Sunjoo Hong, Jae Hyuk Lee, Joonsung Bae, Hoijun YooAbstract:An electrical impedance tomography (EIT) SoC is proposed for the portable real-time Lung Ventilation monitoring system. The proposed SoC is integrated into belt-type EIT system with 32 electrodes and can show the dynamic images of the Lung Ventilation on the mobile devices. It has 3 key building blocks; 1) a T-switch for high off isolation > 60 dB between electrodes, 2) a I/Q signal generation and demodulation for high fidelity image, and 3) an on-chip fast demodulation scheme to reduce scanning time and ADC speed. As a result, real and imaginary part of images can be reconstructed with 97.3% of accuracy and can be displayed on the mobile devices. The proposed EIT SoC of 5.0 mm × 5.0 mm is fabricated in 0.18 μm CMOS technology, and consumes only 10.4 mW with 1.8 V supply.
Long Jiang Zhang - One of the best experts on this subject based on the ideXlab platform.
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dual energy ct Lung Ventilation perfusion imaging for diagnosing pulmonary embolism
European Radiology, 2013Co-Authors: Long Jiang Zhang, Chang Sheng Zhou, Joseph U Schoepf, Hui Xue Sheng, Aleksander W Krazinski, Justin R Silverman, Felix G Meinel, Yan E Zhao, Zong Jun ZhangAbstract:Objectives To evaluate the feasibility and findings of combined dual-energy computed tomography (DECT) Lung Ventilation/perfusion imaging in patients with suspected pulmonary embolism (PE).
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dual energy ct Lung Ventilation perfusion imaging for diagnosing pulmonary embolism
European Radiology, 2013Co-Authors: Long Jiang Zhang, Chang Sheng Zhou, Joseph U Schoepf, Hui Xue Sheng, Aleksander W Krazinski, Justin R Silverman, Felix G Meinel, Yan E Zhao, Zong Jun ZhangAbstract:To evaluate the feasibility and findings of combined dual-energy computed tomography (DECT) Lung Ventilation/perfusion imaging in patients with suspected pulmonary embolism (PE). This study was institutional review board-approved and written informed consent was obtained from each patient. Thirty-two subjects (aged 11–61 years) underwent combined xenon-enhanced Ventilation and iodine-enhanced perfusion DECT. Ventilation, perfusion and morphological information were visually interpreted. Ventilation/perfusion information was classified as mismatch (differing patterns) or match (concordant patterns). Adverse reactions and radiation doses were recorded for each subject. Of 32 patients undergoing xenon-enhanced DECT, six patients reported adverse reactions (shortness of breath, n = 2; mild dizziness, n = 3; limb numbness, n = 1). Twenty-eight of 32 patients could be included into the data analysis. PE was detected in 10/28 patients. PE-related Ventilation/perfusion mismatch was found in 17 Lung lobes in 8/10 patients and matched Ventilation/perfusion was detected in 2 patients. Eighteen patients had no PE. In this group, there was no case of a Ventilation/perfusion mismatch. Matched Ventilation/perfusion impairment was seen in one patient. The overall radiation dose from two DECT acquisitions was 4.8 ± 1.4 mSv (range 2.7-7.5 mSv). DECT Lung Ventilation/perfusion imaging is feasible and can visualise Ventilation/perfusion match or mismatch in patients with suspected PE. • Combined dual-energy CT Lung Ventilation/perfusion imaging is feasible. • Combined dual-energy CT Ventilation/perfusion imaging provides Lung morphological and functional information. • Dual-energy CT can demonstrate Ventilation/perfusion mismatch in patients with pulmonary embolism.
Sunjoo Hong - One of the best experts on this subject based on the ideXlab platform.
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a 10 4 mw electrical impedance tomography soc for portable real time Lung Ventilation monitoring system
IEEE Journal of Solid-state Circuits, 2015Co-Authors: Sunjoo Hong, Jae Hyuk Lee, Joonsung Bae, Hoijun YooAbstract:An electrical impedance tomography (EIT) SoC is proposed for the portable real-time Lung Ventilation monitoring system. The proposed EIT SoC is integrated into belt-typefabric system with 32 electrodes and can show the dynamic images of the Lung Ventilation on the mobile devices. To get high fidelity images, a T-switch is adopted for high off-isolation between electrodes more than 60 dB, and I/Q signal generation and demodulation can obtain both real and imaginary part of images. For the real-time imaging, an on-chip fast demodulation scheme is proposed, and it can also reduce speed requirements of ADC for low-power consumption. The proposed EIT SoC of 5.0 mm × 5.0 mm is fabricated in 0.18 µm CMOS technology, and consumes only 10.4 mW with 1.8 V supply. As a result, EIT images were reconstructed with 97.3% of accuracy and up to 20 frames/s real-time Lung images can be displayed on the mobile devices.
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a 10 4 mw electrical impedance tomography soc for portable real time Lung Ventilation monitoring system
Asian Solid-State Circuits Conference, 2014Co-Authors: Sunjoo Hong, Jae Hyuk Lee, Joonsung Bae, Hoijun YooAbstract:An electrical impedance tomography (EIT) SoC is proposed for the portable real-time Lung Ventilation monitoring system. The proposed SoC is integrated into belt-type EIT system with 32 electrodes and can show the dynamic images of the Lung Ventilation on the mobile devices. It has 3 key building blocks; 1) a T-switch for high off isolation > 60 dB between electrodes, 2) a I/Q signal generation and demodulation for high fidelity image, and 3) an on-chip fast demodulation scheme to reduce scanning time and ADC speed. As a result, real and imaginary part of images can be reconstructed with 97.3% of accuracy and can be displayed on the mobile devices. The proposed EIT SoC of 5.0 mm × 5.0 mm is fabricated in 0.18 μm CMOS technology, and consumes only 10.4 mW with 1.8 V supply.
Justin R Silverman - One of the best experts on this subject based on the ideXlab platform.
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dual energy ct Lung Ventilation perfusion imaging for diagnosing pulmonary embolism
European Radiology, 2013Co-Authors: Long Jiang Zhang, Chang Sheng Zhou, Joseph U Schoepf, Hui Xue Sheng, Aleksander W Krazinski, Justin R Silverman, Felix G Meinel, Yan E Zhao, Zong Jun ZhangAbstract:Objectives To evaluate the feasibility and findings of combined dual-energy computed tomography (DECT) Lung Ventilation/perfusion imaging in patients with suspected pulmonary embolism (PE).
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dual energy ct Lung Ventilation perfusion imaging for diagnosing pulmonary embolism
European Radiology, 2013Co-Authors: Long Jiang Zhang, Chang Sheng Zhou, Joseph U Schoepf, Hui Xue Sheng, Aleksander W Krazinski, Justin R Silverman, Felix G Meinel, Yan E Zhao, Zong Jun ZhangAbstract:To evaluate the feasibility and findings of combined dual-energy computed tomography (DECT) Lung Ventilation/perfusion imaging in patients with suspected pulmonary embolism (PE). This study was institutional review board-approved and written informed consent was obtained from each patient. Thirty-two subjects (aged 11–61 years) underwent combined xenon-enhanced Ventilation and iodine-enhanced perfusion DECT. Ventilation, perfusion and morphological information were visually interpreted. Ventilation/perfusion information was classified as mismatch (differing patterns) or match (concordant patterns). Adverse reactions and radiation doses were recorded for each subject. Of 32 patients undergoing xenon-enhanced DECT, six patients reported adverse reactions (shortness of breath, n = 2; mild dizziness, n = 3; limb numbness, n = 1). Twenty-eight of 32 patients could be included into the data analysis. PE was detected in 10/28 patients. PE-related Ventilation/perfusion mismatch was found in 17 Lung lobes in 8/10 patients and matched Ventilation/perfusion was detected in 2 patients. Eighteen patients had no PE. In this group, there was no case of a Ventilation/perfusion mismatch. Matched Ventilation/perfusion impairment was seen in one patient. The overall radiation dose from two DECT acquisitions was 4.8 ± 1.4 mSv (range 2.7-7.5 mSv). DECT Lung Ventilation/perfusion imaging is feasible and can visualise Ventilation/perfusion match or mismatch in patients with suspected PE. • Combined dual-energy CT Lung Ventilation/perfusion imaging is feasible. • Combined dual-energy CT Ventilation/perfusion imaging provides Lung morphological and functional information. • Dual-energy CT can demonstrate Ventilation/perfusion mismatch in patients with pulmonary embolism.
