1. Transcranial Color-Coded Sonography Criteria for Moderate and Severe Middle Cerebral Artery Stenosis.
- Author
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Liu, Ran, Li, Jingzhi, Hua, Yang, Yang, Jie, Zhao, Yue, Tian, Xiaojie, Ma, Yan, and Zhao, Wenbo
- Subjects
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ARTERIAL stenosis , *CEREBRAL arteries , *DIGITAL subtraction angiography , *ULTRASONIC imaging , *FLOW velocity , *ARTERIAL occlusions , *COLOR Doppler ultrasonography , *CROSS-sectional method , *STENOSIS , *TRANSCRANIAL Doppler ultrasonography , *RETROSPECTIVE studies , *SEVERITY of illness index - Abstract
This study aimed to establish optimal criteria for evaluation of moderate (50%-69%) and severe (70%-99%) middle cerebral artery (MCA) stenosis with transcranial color-coded sonography (TCCS). A total of 375 cases provided 409 TCCS/digital subtraction angiography vessel pairs. Peak systolic velocity (PSV), end-diastolic velocity (EDV) and mean flow velocity (MFV) of the MCA were measured. The stenotic/distal MFV ratios (SDRs) were calculated. With digital subtraction angiography as a reference, for 50%-69% MCA stenosis, the optimal combined criteria were PSV ≥180 cm/s (sensitivity 95.7%, specificity 64.9% and overall accuracy 69.7%); EDV ≥75 cm/s (90.0%, 66.4% and 68.7%); MFV ≥110 cm/s (95.7%, 64.0% and 69.4%); and SDR ≥2.5 (88.6%, 71.3% and 76.3%). Criteria for 70%-99% MCA stenosis were PSV ≥240 cm/s (93.5%, 89.9% and 85.5%); EDV ≥100 cm/s (96.8%, 89.0% and 87.3%); MFV≥160 cm/s (91.9%, 92.8% and 92.2%); and SDR ≥4 (87.1%, 92.2% and 91.4%). Parameters of the MCA detected by TCCS, especially SDR, may increase accuracy in diagnosis of 50%-69% and 70%-99% MCA stenosis. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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