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Chinese Journal of Cerebrovascular Diseases(Electronic Edition) ›› 2026, Vol. 20 ›› Issue (04): 403-410. doi: 10.3877/cma.j.issn.1673-9248.2026.04.008

• Clinical Research • Previous Articles    

Predictive value of ASPECTS combined with apparent diffusion coefficient for the prognosis of intravenous thrombolysis in acute ischemic stroke

Ruoman Li, Fan Wang(), Tao Zhang   

  1. Image Center, Xuzhou No.1 People's Hospital, Xuzhou 221000, China
  • Received:2026-04-09 Online:2026-08-01 Published:2026-09-08
  • Contact: Fan Wang

Abstract:

Objective

To explore the predictive value of Alberta stroke program early CT scores (ASPECTS) combined with 3.0T high-resolution magnetic resonance imaging (MRI) parameters for prognosis in patients with acute ischemic stroke (AIS) following intravenous thrombolysis.

Methods

This study enrolled 152 patients with AIS admitted to Xuzhou No.1 People's Hospital from January 2022 to June 2023. According to scores of the modified Rankin scale (mRS) at 90-day after treatment, they were categorized into a poor prognosis group (mRS score >2, n=43) and a favorable prognosis group (mRS score ≤2, n=109). At admission, all patients underwent 3.0T high-resolution MRI and dynamic CT angiography (CTA), and received intravenous thrombolysis within 6 h after onset in the hospital. The clinical data, ASPECTS and apparent diffusion coefficient (ADC) of infarction area in the two groups were compared by t-test, Mann-Whitney U test, or χ2 test. The influencing factors of prognosis in AIS patients were analyzed by Logistic regression analysis. The evaluation value of dynamic CTA and 3.0T high-resolution MRI in prognosis of AIS patients was analyzed by receiver operating characteristic (ROC) curves.

Results

After propensity score matching, 38 cases in each group were analyzed. The infarction volume [(6.28±0.75) cm3vs (5.15±0.58) cm3, t=7.347, P<0.001] and National Institutes of Health stroke scale (NIHSS) score at admission (10.25±0.78 vs 7.55±0.45, t=18.483, P<0.001) in the poor prognosis group were significantly higher than those in the favorable prognosis group, while the proportion of occlusive vessel recanalization [39.47% (15/38) vs 65.79% (25/38), χ2=5.278, P=0.022], ASPECTS (1.20±0.06 vs 2.49±0.18, t=41.119, P<0.001) and ADC of infarction area [(0.38±0.07)×10-3 mm2/s vs (0.58±0.11)×10-3 mm2/s, t=9.456, P<0.001] were significantly lower than those in the favorable prognosis group. Lower ASPECTS and reduced ADC values were independently associated with poor prognosis (both P<0.05). The combination of ASPECTS and ADC yielded an area under the ROC curve (AUC) of 0.918 (95.35% sensitivity, 65.14% specificity) for predicting poor prognosis.

Conclusion

ASPECTS combined with 3.0T high-resolution MRI parameters (ADC of infarction area) demonstrates robust predictive performance for functional outcomes in AIS patients, providing valuable imaging biomarkers support for individualized treatment decisions.

Key words: Alberta stroke program early CT score, High-resolution magnetic resonance imaging, Acute ischemic stroke, Dynamic CT angiography, Prognosis

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