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Outline
To evaluate the accuracy and clinical value of using CT angiography (CTA) to diagnose cerebral vessel stenosis-related diseases.
The clinical data and imaging data of 100 patients with suspected cerebral vessel stenosis who underwent CTA and digital subtraction angiography (DSA) examinations at Inner Mongolia People's Hospital from January 2024 to January 2025 were selected for comparative analysis. The results of DSA were used as the gold standard to assess the clinical manifestations of vascular stenosis and its severity diagnosed by CTA.
A total of 69 vascular stenosis lesions were found by DSA examination, including 9 mild stenosis, 39 moderate stenosis, and 21 severe stenosis. CTA examination detected 76 vascular stenosis lesions, including 13 mild stenosis, 39 moderate stenosis, and 24 severe stenosis. The diagnosis of vascular stenosis degree by CTA was consistent with DSA results in 67 cases, with a diagnostic accuracy rate of 90.79%. Among the 76 positive results of CTA, 67 were true positives, so the positive predictive value was 88.16%. Among the 24 negative results of CTA, 22 were true negatives, so the negative predictive value was 91.67%. The accuracy rate of CTA in diagnosing cerebral vessel stenosis was 89.00%, the sensitivity was 97.10%, and the specificity was 70.97%. The Kappa index of CTA in diagnosing cerebral vessel stenosis was 0.536 (P<0.001), indicating a strong consistency between the two examination methods.
High sensitivity indicates that CTA examination has a strong ability to detect patients with cerebral vessel stenosis and a low false-negative rate. The low specificity suggests that the false-positive rate of CTA is low, but there is a certain probability of misdiagnosis for patients with mild stenosis. The CTA examination technique has high accuracy in diagnosing cerebral vessel stenosis and evaluating the severity of stenosis, and its reasonable use has certain clinical significance.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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