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KMID : 0880420190200121583
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Korean Journal of Radiology
2019 Volume.20 No. 12 p.1583 ~ p.1596
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Clinical Applications of Wide-Detector CT Scanners for Cardiothoracic Imaging: An Update
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Kang Eun-Ju
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Abstract
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Technical developments in multidetector computed tomography (CT) have increased the number of detector rows on the z-axis, and 16-cm wide-area-coverage CT scanners have enabled volumetric scanning of the entire heart. Beyond coronary arterial imaging, such innovations offer several advantages during clinical imaging in the cardiothoracic area. The wide-detector CT scanner markedly reduces the image acquisition time to less than 1 second for coronary CT angiography, thereby decreasing the volume of contrast material and radiation dose required for the examination. It also eliminates stair-step artifacts, allowing robust improvements in myocardial function and perfusion imaging. Additionally, new imaging techniques for the cardiothoracic area, including subtraction imaging and free-breathing scans, have been developed and further improved by using the wide-detector CT scanner. This article investigates the technical developments in wide-detector CT scanners, summarizes their clinical applications in the cardiothoracic area, and provides a review of the recent literature.
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KEYWORD
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Multidetector computed tomography, Wide-area detector, Coronary artery disease, Imaging, Technology
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