Article
Medicine, General & Internal
Muhammad Taha Hagar, Martin Soschynski, Matthias Benndorf, Thomas Stein, Jana Taron, Christopher L. Schlett, Fabian Bamberg, Tobias Krauss
Summary: This study investigated whether adjusting the scan length of prospectively ECG-triggered CCTA using CAS-CT images can reduce overall radiation doses. The results showed that planning CCTA using CAS-CT led to a shorter scan length and slightly lower effective dose compared to planning via scout view, except for high-pitch spiral CCTA where a slightly opposite effect was observed.
Article
Radiology, Nuclear Medicine & Medical Imaging
Qing Zhang, Haifeng Mi, Xubo Shi, Wei Li, Senlin Guo, Ping Wang, Hongna Suo, Ziyi Wang, Shanshan Jin, Fei Yan, Yantao Niu, Junfang Xian
Summary: By increasing iodine concentration and noise level, it is possible to further reduce radiation dose in coronary CT angiography without compromising image quality.
ACADEMIC RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Yining Wang, Yu Chen, Peijun Liu, Wan Lv, Jianlin Wu, Mengqi Wei, Dapeng Shi, Xianheng Wu, Wenya Liu, Xiaofeng Tao, Hongjie Hu, Xiangxing Ma, Xiaozheng Yang, Huadan Xue, Zhengyu Jin
Summary: This study aimed to evaluate the image quality and feasibility of 80-kV acquisition protocols with varying iodine delivery rates (IDR) and contrast concentrations in non-obese patients. The results showed that contrast opacification was significantly higher in the 80-kV 1.2 gI/s IDR scanned segments, but lower with 0.96 gI/s IDR. Despite lower contrast-to-noise ratios and signal-to-noise ratios in the 80-kV images, the image quality and diagnostic confidence remained good. Compared to the standard protocol, the 80-kV protocols led to reductions in radiation dose by 44-52% and iodine dose by 19%.
EUROPEAN RADIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Yukako Izoe, Michinobu Nagao, Mei Tokai, Hiroyuki Hashimoto, Isao Tanaka, Koichi Chida
Summary: The study compared and validated the radiation dose of dynamic CCTA with a 320-row scanner with that of standard CCTA and the latest diagnostic reference levels (DRL). The results showed that the radiation exposure dose during dynamic CCTA does not exceed that of standard CCTA and is sufficient to meet the latest DRL.
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS
(2021)
Article
Medicine, General & Internal
Marian Ondrejkovic, Dusan Salat, Daniel Cambal, Andrej Klepanec
Summary: This study aimed to evaluate the impact of high and irregular heart rate on the image quality and radiation exposure in CT coronary angiography using a 256-row, 16cm wide detector CT system. The results showed that patients with a regular heart rate had better image quality and lower radiation dose compared to patients with an irregular heart rhythm. The use of a CT scanner with a 16cm wide detector enabled low radiation exposure even at high heart rates or irregular heart rhythms.
Article
Radiology, Nuclear Medicine & Medical Imaging
Liang Jin, Yiyi Gao, An'qi Jiang, Zhenlin Li, Peijun Wang, Ming Li
Summary: The study aimed to investigate whether using coronary artery calcium score scan (CACS) could reduce radiation dose for coronary computed tomography angiography (CCTA) scanning and overall radiation exposure (ORE). The results showed that CACS led to shorter scan lengths and lower dose-length product (DLP) in CCTA scanning, but its effectiveness in reducing overall radiation exposure was weak.
ACADEMIC RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Weifeng Guo, Yuru Lin, Akira Taniguchi, Yaxin Zhu, Pratik Tripathi, Shan Yang, Junzhen Liu, Hong Yun, Hang Jin, Jie Zhang, Jing Yang, Mengsu Zeng
Summary: The study compared the diagnostic power of on-site CT-FFR combined with CCTA versus using CCTA alone in detecting patients with flow-limiting CAD. The results showed that CT-FFR provided significant incremental diagnostic improvement over CCTA in identifying patients with flow-limiting CAD.
EUROPEAN RADIOLOGY
(2021)
Article
Chemistry, Physical
Vasileios Metaxas, Christos P. Dimitroukas, Fotios O. Efthymiou, Petros E. Zampakis, George S. Panayiotakis, Christina P. Kalogeropoulou
Summary: This study evaluates radiation dose during CTA examinations with GE Light Speed 16 and Toshiba Aquilion Prime 80 CT systems, establishing institutional DRLs. The study finds lower radiation dose with the Toshiba system compared to GE, and the Toshiba system's IDRLs and ED values are comparable or lower than previous studies. Patient dose surveys help increase awareness and understanding of radiation dose levels during CTA examinations.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Medicine, General & Internal
Matthias A. Fink, Sibylle Stoll, Claudius Melzig, Andrea Steuwe, Sasan Partovi, Dittmar Boeckler, Hans-Ulrich Kauczor, Fabian Rengier
Summary: The purpose of this study was to analyze the image quality and radiation dose of BMI-adapted low-radiation and low-iodine dose CTA of the thoracoabdominal aorta in obese and non-obese patients. The results showed that the BMI-adapted CTA method provided diagnostic image quality in both obese and non-obese patients, with better results in females and the elderly.
Article
Radiology, Nuclear Medicine & Medical Imaging
Gerald Gheysens, Walter De Wever, Lesley Cockmartin, Hilde Bosmans, Walter Coudyzer, Sofie De Vuysere, Mathieu Lefere
Summary: The study demonstrates that scoutless ultra-low-dose CT is reliable for detecting solid lung nodules, particularly those with larger volumes. However, detection rates decrease significantly for nodules with smaller volumes when compared to standard-dose CT. Patient body mass index and chest circumference do not influence nodule detectability.
EUROPEAN RADIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
David C. Rotzinger, Salim A. Si-Mohamed, Jerome Yerly, Sara Boccalini, Fabio Becce, Loic Boussel, Reto A. Meuli, Salah D. Qanadli, Philippe C. Douek
Summary: The study demonstrates that VMI outperform conventional CT in terms of accuracy and precision in vitro, while low-keV VMI allows for a 40% iodine dose reduction in vivo while maintaining diagnostic image quality and improving the CNR between lumen versus fat and muscle.
EUROPEAN RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Dominik C. Benz, Sara Ersoezlue, Francois L. A. Mojon, Michael Messerli, Anna K. Mitulla, Domenico Ciancone, David Kenkel, Jan A. Schaab, Catherine Gebhard, Aju P. Pazhenkottil, Philipp A. Kaufmann, Ronny R. Buechel
Summary: DLIR enables a 43% reduction in radiation dose from CCTA without significant impacts on image noise, stenosis severity, plaque composition, and quantitative plaque volume.
EUROPEAN RADIOLOGY
(2022)
Article
Cardiac & Cardiovascular Systems
Andriy Nykonenko, Gudrun Feuchtner, Olexandr Nykonenko, Karina Chmul, Andrii Makarenkov, Darya Naumova, Vyacheslav Osaulenko, Orest Chevtchik
Summary: This study demonstrated that performing CABG surgery solely based on CCTA results is clinically safe and effective. Patients maintained a good quality of life one year after surgery, with mortality and major adverse cardiovascular events rates at 0%.
JOURNAL OF CARDIOVASCULAR COMPUTED TOMOGRAPHY
(2021)
Article
Multidisciplinary Sciences
Entesar Zawam Dalah, Abdulmunhem Obaideen, Sabaa Anam, Khalid Alzimami, Layal Khalid Jambi, David A. Bradley
Summary: This study estimated the lifetime risk of lung cancer in CAD patients receiving enhanced CCTA and unenhanced CTCS. The results showed significant differences in patient effective dose and organ doses between CTCS and CCTA. Female patients, younger patients, and those undergoing both CCTA and CTCS scans had higher risk. The mAs parameter had the greatest impact on patient dose.
Article
Radiology, Nuclear Medicine & Medical Imaging
Salim A. Si-Mohamed, Sara Boccalini, Hugo Lacombe, Adja Diaw, Mohammad Varasteh, Pierre-Antoine Rodesch, Riham Dessouky, Marjorie Villien, Valerie Tatard-Leitman, Thomas Bochaton, Philippe Coulon, Yoad Yagil, Elias Lahoud, Klaus Erhard, Benjamin Riche, Eric Bonnefoy, Gilles Rioufol, Gerard Finet, Cyrille Bergerot, Loic Boussel, Joel Greffier, Philippe C. Douek
Summary: The study compared the quality of coronary CT angiography (CCTA) scans obtained with a photon-counting CT (PCCT) system and an energy-integrating dual-layer CT (DLCT) system. The results showed that PCCT provided improved image quality and diagnostic confidence compared to DLCT.
Article
Cardiac & Cardiovascular Systems
Sang Yoon Kim, Suryeun Chung, Dong Jung Kim, Jun Sung Kim, Cheong Lim, Kay-Hyun Park
EUROPEAN JOURNAL OF CARDIO-THORACIC SURGERY
(2018)
Article
Cardiac & Cardiovascular Systems
Sung Hye Kong, Ji Won Yoon, Sang Yoon Kim, Tae Jung Oh, Kay-Hyun Park, Joong Haeng Choh, Young Joo Park, Cheong Lim
AMERICAN JOURNAL OF CARDIOLOGY
(2018)
Article
Critical Care Medicine
Tak Kyu Oh, In-Ae Song, Jae Ho Lee, Cheong Lim, Young-Tae Jeon, Hee-Joon Bae, You Hwan Jo
ANNALS OF INTENSIVE CARE
(2019)
Article
Medicine, General & Internal
Tak Kyu Oh, In-Ae Song, Young-Jae Cho, Cheong Lim, Young-Tae Jeon, Hee-Joon Bae, You Hwan Jo
JOURNAL OF CLINICAL MEDICINE
(2019)
Article
Anesthesiology
Tak Kyu Oh, In-Ae Song, Sang-Hwan Do, Sanghoon Jheon, Cheong Lim
JOURNAL OF ANESTHESIA
(2019)
Article
Cardiac & Cardiovascular Systems
Wonsuk Choi, Hyoung Woo Chang, Si-Hyuck Kang, Chang-Hwan Yoon, Young-Seok Cho, Tae-Jin Youn, In-Ho Chae, Dong Jung Kim, Jun Sung Kim, Kay-Hyun Park, Hyo-Soo Kim, Cheong Lim, Jung-Won Suh
CIRCULATION JOURNAL
(2019)
Article
Anesthesiology
Tak Kyu Oh, In-Ae Song, Jae Ho Lee, Cheong Lim, Young-Tae Jeon, Hee-Joon Bae, You Hwan Jo, Hee-Jung Jee
Article
Anesthesiology
Tak Kyu Oh, In-Ae Song, Jae Ho Lee, Cheong Lim, Young-Tae Jeon, Hee-Joon Bae, You Hwan Jo, Hee-Jung Jee
BRITISH JOURNAL OF ANAESTHESIA
(2019)
Article
Cardiac & Cardiovascular Systems
Ki-Bong Kim, Jae Woong Choi, Se Jin Oh, Ho Young Hwang, Jun Sung Kim, Jae-Sung Choi, Cheong Lim
ANNALS OF THORACIC SURGERY
(2020)
Article
Surgery
Kichun Kim, Cheong Lim, Gilhyang Kim, Jin-Haeng Chung, Young-Seok Cho, Jun Hwan Cho, Jae -Bin Seo, Woo -Young Chung, Se-Jin Oh, Jae -Sung Choi, Jun -Sung Kim, Jin Joo Park, Jung -Won Suh, Tae-Jin Youn, In -Ho Chae, Dong-Ju Choi
ANNALS OF VASCULAR SURGERY
(2020)
Article
Endocrinology & Metabolism
Eun Shil Hong, Cheong Lim, Hye Yeon Choi, Yun Kyung Lee, Eu Jeong Ku, Jae Hoon Moon, Kyong Soo Park, Hak Chul Jang, Sung Hee Choi
BMJ OPEN DIABETES RESEARCH & CARE
(2019)
Article
Medicine, General & Internal
Sang-Yeong Cho, Yeonyee E. Yoon, Wonjae Lee, Si-Hyuck Kang, Young Hwan Song, Cheong Lim, Goo-Yeong Cho, Jeong-Wook Seo
JOURNAL OF MEDICAL CASE REPORTS
(2019)
Article
Medical Informatics
Jiwon Kang, Jae Hun Kim, Kyung Hyun Lee, Woo Seok Lee, Hyoung Woo Chang, Jun Sung Kim, Kay-Hyun Park, Cheong Lim
HEALTHCARE INFORMATICS RESEARCH
(2019)
Article
Engineering, Biomedical
Dong Jung Kim, Young-Jae Cho, Sang Hon Park, Cheong Lim, Kay-Hyun Park, Sanghoon Jheon, Jun Sung Kim
Article
Cardiac & Cardiovascular Systems
Tae Jung Oh, Chang Ho Ahn, Bo-Rahm Kim, Kyoung Min Kim, Jae Hoon Moon, Soo Lim, Kyong Soo Park, Cheong Lim, HakChul Jang, Sung Hee Choi
CARDIOVASCULAR DIABETOLOGY
(2017)