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| The influence factors on CT value of carotid atherosclerotic plaque in contrast enhanced qrterial phase |
| YE Huichuang1, KE Wenting2, FAN Hengxin2, CHEN Zhenjing3, FAN Shufeng4 |
| 1.Department of Radiology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027; 2.Department of Radiology, the Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou, 317000; 3.Department of Radiology, Ningbo Medical Center Lihuili Hospital, Ningbo, 315000; 4.Department of Radiology, the Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310000 |
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YE Huichuang,KE Wenting,FAN Hengxin, et al. The influence factors on CT value of carotid atherosclerotic plaque in contrast enhanced qrterial phase[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2018, 48(3): 194-196,201.
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Abstract Objective: To investigate the influence factors and measuring CT value of carotid atherosclerotic plaques in the contrast enhanced arterial phase. Methods: Forty successive clinical diagnostic cases of unilateral or bilateral carotid atherosclerotic plaques (the maximum thickness >2 mm) confirmed by CTA and clinical data were randomly collected. The region of interest on the maximum level of the plaque without calcification and obvious artifacts was measured, the difference (∆Hu) of the CT value after plain scan and enhanced scan on the same level was calculated and the influence factors were investigated. Results: Of 61 carotid atherosclerotic plaques enrolled from the 40 cases, the CT value of CTA-phase in 26 plaques (42.6%) rose >10 Hu, 8 plaques (13.1%) declined >10 Hu, while the rest 27 plaques (44.3%) between the rise and decline. The median, maximum and minimum CT values of ∆Hu were 4.8 (-4.4, 19.3) Hu, 49.6 Hu, -55.3 Hu respectively. Conclusion: The concentration of the contrast medium in the arterial phase could affect the CT value of CAS plaque.
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Received: 10 April 2017
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