Diagnostic value of MRI and CT imaging examinations in elderly patients with multiple cerebral infarction
MRI与CT影像检查在老年多发性脑梗死诊断中的价值体会

摘要

目的 探究2024年1月-2025年1月240例老年多发性脑梗死患者中磁共振成像（MRI）与CT的诊断价值。方法选取同期240例疑似患者，均行CT与MRI检查，以数字减影血管造影（DSA）为金标准，对比两种检查的诊断效能、不同位置及大小病灶检出率、不同发病时间段检出情况，以及检查耗时与患者耐受度。结果 MRI的诊断灵敏度、特异度及准确率均显著优于CT，对丘脑、基底节区等特定部位病灶，以及微小病灶和超急性期病灶的检出优势突出，而两者对部分表浅或较大病灶检出率无明显差异。MRI检查耗时更长，且存在金属植入物患者无法检查的情况，CT则更快速、适用范围更广。结论 MRI诊断整体效能更优，利于早期干预；CT适合急诊初步筛查，临床需结合患者情况合理选择。

Abstract

Objective To explore the diagnostic value of Magnetic Resonance Imaging (MRI) and CT in 240 elderly patients with multiple cerebral infarction admitted from January 2024 to January 2025.
Methods A total of 240 suspected patients during the same period underwent both CT and MRI examinations. With Digital Subtraction Angiography (DSA) as the gold standard, the diagnostic efficacy, lesion detection rates of different locations and sizes, detection results in different onset time periods, examination time and patient tolerance of the two methods were compared.
Results The diagnostic sensitivity, specificity and accuracy of MRI were significantly superior to those of CT. MRI had obvious advantages in detecting lesions in specific areas such as the thalamus and basal ganglia, as well as tiny lesions and hyperacute phase lesions. However, there was no significant difference in the detection rate of some superficial or larger lesions between the two methods. MRI took longer to examine and was not applicable to patients with metal implants, while CT was faster and had a wider scope of application.
Conclusion   MRI has superior overall diagnostic efficacy, which is conducive to early intervention; CT is suitable for preliminary emergency screening. Clinically, the examination method should be reasonably selected according to the patient's condition.