The aim of this article is to illustrate the main technical improvements in the last generation of 64-row CT scanners and the possible applications in coronary angiography. In particular, we describe the new physical components (X-ray tube-detectors system) and the general scan and reconstruction parameters. We then define the scan protocols for coronary angiography with the new generation of 64-row CT scanners to enable radiologists to perform a CT study on the basis of the diagnostic possibilities.
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Cardiovasc Diagn Ther
June 2023
Department of Cardiology, The First Hospital of China Medical University, Shenyang, China.
Background: Previous studies have shown that neo-commissural orientation of transcatheter heart valve (THV) can influence coronary obstruction during transcatheter aortic valve replacement (TAVR), long-term durability of THV, and coronary artery access for reintervention after TAVR. Specific initial orientations of Evolut R/Pro and Acurate Neo aortic valves can improve commissural alignment. However, the method of achieving commissural alignment with the Venus-A valve remains unknown.
View Article and Find Full Text PDFCurr Med Imaging
November 2023
Department of Radiology, Seoul National University Hospital, Seoul, Korea
Background: Whether deep learning-based CT reconstruction could improve lesion conspicuity on abdominal CT when the radiation dose is reduced is controversial.
Objectives: To determine whether DLIR can provide better image quality and reduce radiation dose in contrast-enhanced abdominal CT compared with the second generation of adaptive statistical iterative reconstruction (ASiR-V).
Aims: This study aims to determine whether deep-learning image reconstruction (DLIR) can improve image quality.
Dermatol Surg
March 2023
Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Guangzhou City, Guangdong Province, People's Republic of China.
Nihon Hoshasen Gijutsu Gakkai Zasshi
August 2022
Department of Medical Physics, Faculty of Life Sciences, Kumamoto University.
Purpose: We retrospectively evaluated the visualization of pediatric coronary computed tomography angiography (CCTA) images by using the 64-detector row CT scanner between the electrocardiogram-gated helical scan and non-electrocardiogram-gated helical scan.
Methods: From January 2015 to March 2019, 100 children who underwent CT angiography examination were retrospectively enrolled. Group A consisted of 50 patients with electrocardiogram-gated helical scan.
J Cardiovasc Comput Tomogr
April 2022
Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan. Electronic address:
Background: The development of ultra-high-resolution CT (U-HRCT) is expected to improve the accuracy of coronary stenosis evaluation. This study aimed to evaluate the accuracy of the stenosis severities of coronary artery phantoms estimated using U-HRCT by comparing them to those estimated with conventional CT.
Methods: Coronary artery phantoms with non-calcified and calcified lesions were scanned with conventional CT (64-row × 0.
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