Abstract: Objective    To compare and analyze the diagnostic value of CT angiography (CTA) and high-resolution magnetic resonance angiography (HR-MRI) in young stroke patients with arterial dissection. Methods    Seventy young stroke patients diagnosed in our hospital from January 2016 to December 2021 were selected, 47 were diagnosed with arterial dissection by digital subtraction angiography (DSA) and 23 were diagnosed with non-arterial dissection. All patients were performed with CTA and HR-MRI imaging. The diagnostic rate and consistency of CTA and HR-MRI in young stroke patients with arterial dissection were analyzed. The diagnostic value of CTA and HR-MRI in young stroke patients with arterial dissection was analyzed by receiver operating characteristic curve (ROC).    Results   Compared with non-dissected patients, patients with arterial dissection were older and had more head and neck pain symptom (P<0.05). The positive rate of CTA and HR-MRI for young stroke patients with artery dissection was 30.00%（21/70） and 48.57%（49/70）, respectively. Using DSA as the gold standard, the correlation between CTA and DSA was Kappa 0.458, and the correlation between HR-MRI and DSA was Kappa 0.829, indicating the consistency between HR-MRI and DSA was good. ROC curve analysis showed that the sensitivity of CTA and HR-MRI for young stroke patients with arterial dissection were 64.87% and 87.68%, respectively, the specificity were 80.27% and 90.82%, respectively, and the area under curve (AUC) of ROC were 0.86 and 0.95, respectively. Compared with the diagnostic efficiency of CTA, HR-MRI had a higher AUC. It had high diagnostic value for young stroke patients with arterial dissection.    Conclusions   Compared with CTA, HR-MRI has higher diagnostic value in highly suspected young stroke patients with arterial dissection.

Key words: CTA,  ,  ,  , HR-MRI,  ,  ,  , Stroke,  ,  ,  , Arterial dissection,  ,  ,  , Diagnostic value