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KMID : 1149520170010030205
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Cardiovasclar Imaging Asia
2017 Volume.1 No. 3 p.205 ~ p.207
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Napkin-Ring Sign on Coronary Computed Tomography Angiography-Tiered Enhancement of Coronary Lumen and Plaque
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Utsunomiya Daisuke
Hokimoto Seiji
Kanemaru Yusuke
Oda Seitaro
Nakaura Takeshi
Kidoh Masafumi
Yuki Hideaki
Hirata Kenichiro
Yamashita Yasuyuki
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Abstract
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We present the case of an 85-year-old man showing the “napkin-ring sign” tiered enhancement pattern on dual-phase coronary CT angiography using a 320-row multidetector CT. This has not been previously reported. In the first-phase scan, only the coronary arterial lumen was opacified. In the second-phase scan, not only the coronary arterial lumen but also the plaque margin was clearly enhanced (the “napkin-ring sign”). We considered that the tiered enhancement pattern might reflect the pathology of the “napkin-ring sign” which includes a necrotic core in the center of a plaque surrounded by fibrosis with proliferation of microangiotextures.
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KEYWORD
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Coronary artery disease, Plaque, Atherosclerotic, Multidetector computed tomography
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Listed journal information
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