目的:研究肺栓塞(PE)诊断中CT肺栓塞指数(PAOI)的应用价值.方法:自2020年06月-2021年06月时间段抽取58例PE患者,均开展CT肺血管成像检查,依据患者PAOI评估结果进行分组,＜30％为轻度组,30-50％为中度组,＞50％为重度组,分析PAOI和患者预后的相关性,并比较各组血气指标、右心功能.结果:三组性别、年龄、高血压与COPD等合并症情况无明显差异(p＞0.05);三组PAOI差异明显,且病情越严重病死率越高,差异有统计学意义(P＜0.05).病情越严重,患者血气分析指标水平越低“,”Objective: To study the application value of CT pulmonary embolism index (PAOI) in the diagnosis of pulmonary embolism (PE). Methods: From August 2020 to June 2021, 58 patients with PE were selected, and CT pulmonary angiography was performed, and the patients were grouped according to the results of the PAOI assessment. ＜ 30％ was the mild group, and 30-50％ was the moderate group. In the degree group, ＞ 50％ is the severe group. The correlation between PAOI and patient prognosis was analyzed, and the blood gas indexes and right heart function of each group were compared. Results: The three groups had no significant differences in comorbidities such as gender, age, hypertension and COPD (p ＞ 0.05); the three groups had significant differences in PAOI, and the more severe the disease, the higher the fatality rate, and the difference was statistically significant (P ＜ 0.05) . The more severe the disease, the lower the patient\'\'s blood gas analysis index level, the higher the RVd, RVd/LVd, RVs, RVs/LVs index levels and the higher the incidence of IVSD, IVCR and AZR. Among them, the three groups of PaO2 index levels, RVd, RVs, LVs, IVSD The difference between AZR and AZR was statistically significant (P ＜ 0.05). Conclusion: PE patients can effectively grasp the severity of the disease by evaluating PAOI, and then provide reference data for prognostic evaluation and treatment adjustment.