Analysis of Imaging Characteristics and Diagnostic Value of HRCT in Patients with Severe Pneumonia
Objective To explore the imaging characteristics and diagnostic value of high resolution CT(HRCT)in patients with severe pneumonia.Methods The clinical data of 31 patients with severe pneumonia and 65 patients with common pneumonia in our hospital were retrospectively analyzed from May 2021 to April 2023,and the above patients were included in severe group and non-severe group respectively.All patients underwent HRCT examination.The general data,lesion range and HRCT imaging characteristics were compared between both groups.ROC curve was used to analyze the diagnostic value of HRCT on severe pneumonia.Results The incidence rates of fever,asthma and consciousness/orientation disorder symptoms,white blood cell count,neutrophil ratio,C-reactive protein,hospital-acquired pneumonia rate,hypertension,cardiovascular and cerebrovascular diseases,diabetes mellitus and smoking history in severe group were higher than those in non-severe group(P＜0.05).There were 23 patients(74.19％)with 15-18 lung segments in severe group,followed by 13-15(12.90％).There were 29 patients(44.62％)with 7-12 lung segments in non-severe group,followed by 13-15(26.15％).There was a statistically significant difference in the distribution of lesion range between the two groups(P＜0.05).The incidence rates of interlobular septal thickening,strip shadow,lymph node enlargement,lymph node calcification,solid nodules,pleural thickening,pleural effusion,pericardial effusion,pulmonary air sac and pneumothorax were higher in severe group than those in non-severe group(P＜0.05).The AUCs of HRCT imaging characteristics such as strip shadow,lymph node enlargement,lymph node calcification,pleural thickening,pleural effusion,pericardial effusion,pulmonary air sac and pneumothorax in the diagnosis of severe pneumonia were 0.796,0.736,0.605,0.720,0.687,0.621,0.573 and 0.565 respectively(P＜0.05).Conclusion HRCT imaging characteristics have high specificity in the diagnosis of severe pneumonia,and can provide reference for clinical diagnosis.
Severe PneumoniaHigh Resolution CTImaging CharacteristicsDiagnostic Value
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