Article
Radiology, Nuclear Medicine & Medical Imaging
D. Murphy, J. Stephenson, Y. Bouhbib, J. Graby, A. Khavandi, S. Lyen, B. Hudson, J. C. L. Rodrigues
Summary: The aim of this study was to determine the proportion of CTCA referrals with CAC evident on previous non-cardiac CT imaging and how it impacted the diagnostic yield for CTCA, the requirement for additional diagnostic testing, and the associated costs. The study found that the identification of severe CAC on a non-gated thoracic CT altered the management in 42% of cases and was cost-effective.
CLINICAL RADIOLOGY
(2023)
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
T. P. W. van den Boogert, B. E. P. M. Claessen, S. M. Boekholdt, T. Leiner, R. Vliegenthart, S. F. Schuiling, J. R. Timmer, S. C. A. M. Bekkers, M. Voskuil, H. J. Siebelink, W. van Es, H. J. Lamb, M. Prokop, P. Damman, J. Stoker, H. C. Willems, J. P. Henriques, R. N. Planken
Summary: The survey shows that the Netherlands has a high CTCA services coverage, but a substantial increase in CTCA capacity is expected in order to implement the 2019 ESC-CCS recommendations on the use of CTCA. The importance of addressing variations in image acquisition and standardizing the interpretation and reporting of CTCA is highlighted.
INSIGHTS INTO IMAGING
(2021)
Article
Cardiac & Cardiovascular Systems
Daniel A. Jones, Anne-Marie Beirne, Matthew Kelham, Krishnaraj S. Rathod, Mervyn Andiapen, Lucinda Wynne, Thomas Godec, Nasim Forooghi, Rohini Ramaseshan, James C. Moon, Ceri Davies, Christos V. Bourantas, Andreas Baumbach, Charlotte Manisty, Andrew Wragg, Amrita Ahluwalia, Francesca Pugliese, Anthony Mathur, BYPASS-CTCA Trial Comm Investigators
Summary: This study assessed the benefit of computed tomography cardiac angiography (CTCA) in patients with previous coronary artery bypass grafting referred for invasive coronary angiography (ICA). The results showed that CTCA before ICA led to reductions in procedure time and contrast-induced nephropathy, with improved patient satisfaction.
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
Radiology, Nuclear Medicine & Medical Imaging
Young Joo Suh, Cherry Kim, June-Goo Lee, Hongmin Oh, Heejun Kang, Young-Hak Kim, Dong Hyun Yang
Summary: This study validated an AI-based automatic CAC scoring software on LDCT and found that it showed good to excellent reliability in CAC score and CAC severity categorization, although the reliability varied among different institutions.
EUROPEAN RADIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Natasa Javorszky, Balint Homonnay, Gary Gerstenblith, David Bluemke, Peter Kiss, Mihaly Torok, David Celentano, Hong Lai, Shenghan Lai, Marton Kolossvary
Summary: This study developed an open-source deep learning model for segmenting coronary plaques on coronary CT angiography. The model showed excellent performance in quantifying plaque volumes in both the test set and an external dataset, and transfer learning further improved the accuracy of the model.
EUROPEAN RADIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Meiling Li, Runjianya Ling, Lihua Yu, Wenyi Yang, Zirong Chen, Dijia Wu, Jiayin Zhang
Summary: In this study, a deep learning model was developed for automated reconstruction of chronic total occlusion (CTO) imaging. The model significantly reduced postprocessing time and demonstrated excellent correlation and agreement in the assessment of occlusion features.
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
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
Seokhun Yang, Masahiro Hoshino, Bon-Kwon Koo, Taishi Yonetsu, Jinlong Zhang, Doyeon Hwang, Eun-Seok Shin, Joon-Hyung Doh, Chang-Wook Nam, Jianan Wang, Shaoliang Chen, Nobuhiro Tanaka, Hitoshi Matsuo, Takashi Kubo, Hyuk-Jae Chang, Tsunekazu Kakuta, Jagat Narula
Summary: The study found that high-risk plaque features and plaque burden at coronary CT angiography were associated with coronary pressure and flow, and could independently predict the occurrence of cardiovascular events.
Review
Medicine, General & Internal
Alyssa L. S. Chow, Saad D. Alhassani, Andrew M. Crean, Gary R. Small
Summary: The article discusses the roles of CCTA and CAC-scoring in subclinical atherosclerosis, as well as their applications in screening and guiding therapy, suggesting that CCTA plays an essential role in the detection and management of clinical coronary artery disease.
JOURNAL OF CLINICAL MEDICINE
(2021)
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
Wanjiang Li, Kaiyue Diao, Yuting Wen, Tao Shuai, Yongchun You, Jin Zhao, Kai Liao, Chunyan Lu, Jianqun Yu, Yong He, Zhenlin Li
Summary: The use of 70-kVp tube voltage combined with DLIR-H in CCTA for patients with BMI < 26 kg/m(2) significantly reduces radiation and contrast doses while improving image quality compared to the conventional 120-kVp tube voltage with 60% ASIR-V.
EUROPEAN RADIOLOGY
(2022)