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KMID : 1103720200810020272
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Journal of the Korean Society of Radiology
2020 Volume.81 No. 2 p.272 ~ p.289
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Computed Tomography of the Left Atrium and Left Atrial Appendage: A Pictorial Essay on the Anatomy, Normal Variants, and Pathology
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Song Min-Ji
Kim Sung-Jin
Koo Hyun-Jung
Kim Moon-Young
Yoo Jin-Young
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Abstract
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Current advances in CT techniques allow thorough evaluation of the beating heart. The strengths of cardiac CT relative to echocardiography and magnetic resonance imaging are its high availability in most institutions, rapid production of high-quality images, and outstanding delineation of the anatomy. For many normal variants and pathologic conditions, such as thrombi, masses, and congenital abnormalities of the left atrium, CT findings are sufficient to make a presumptive diagnosis. Assessments of the left atrium and left atrial appendage are particularly important for the management of atrial fibrillation, as various catheter-based procedures are aimed at the mechanical and electrical isolation of these structures. CT offers information crucial to a successful catheter-based procedure or surgery. Therefore, a comprehensive review of the geometry (shape, size, and relative position), along with various CT imaging features of pathologic states, should be provided in radiology reports to be of clinical value.
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KEYWORD
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Left Atrium, Atrial Appendage, Cardiac Catheterization, Atrial Remodeling, Heart Neoplasms, Atrial Fibrillation, Computed Tomography, X-Ray
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