Page 111 - 南京医科大学自然版
P. 111

第45卷第11期                           南京医科大学学报(自然科学版)
                 2025年11月                   Journal of Nanjing Medical University(Natural Sciences)     ·1641 ·


               ·临床研究·

                相位对比 MRI 在评估结缔组织病相关肺动脉高压预后中的应

                用研究



                许定虎 ,刘王琰 ,周清清 ,徐 怡 ,祝因苏                   3*
                                                 1
                                         2
                       1,2
                                1
                南京医科大学第一附属医院放射科,江苏                南京    210029;南京医科大学附属江宁医院医学影像科,江苏                 南京    211100;
                1                                             2
                南京医科大学附属肿瘤医院(江苏省肿瘤医院)影像中心,江苏省肿瘤防治研究所,江苏                              南京 210009
                3
               [摘   要] 目的:探讨基于相位对比磁共振成像(phase contrast magnetic resonance imaging,PC⁃MRI)肺动脉血流参数在评估结
                缔组织病相关肺动脉高压(connective tissue disease⁃associated pulmonary arterial hypertension,CTD⁃PAH)患者预后中的应用
                价值。方法:回顾性分析136例CTD⁃PAH患者的临床资料及心脏磁共振(cardiac magnetic resonance,CMR)参数,以及基于PC⁃MRI
                测得的主肺动脉(main pulmonary artery,MPA)血流参数。根据随访结果将患者分为发生临床恶化事件组与未发生临床恶化事
                件组。两组患者的CMR指标差异通过独立样本t检验或Mann⁃Whitney非参数检验评估。通过Cox比例风险回归筛选终点事
                件的独立预测因子,依据受试者工作特征(receiver operating characteristic,ROC)曲线最佳阈值进行分组,并采用Kaplan⁃Meier
                生存分析验证其预后差异。结果:与未发生临床恶化事件组相比,发生临床恶化事件组患者的左心室收缩末期容积指数、左心
                室射血分数、右心室射血分数、左心室心脏指数、主肺动脉峰值流速及主肺动脉平均流速(main pulmonary artery mean velocity,
                MPAMV)均减低,右心室舒张末期容积指数(right ventricular end⁃diastolic volume index,RVEDVI)、右心室收缩末期容积指数、
                右心室心肌质量指数和心室质量指数均升高,组间差异均有统计学意义(P均 < 0.05)。Cox回归分析表明,MPAMV、RVEDVI
                                                                                                                2
                是CTD⁃PAH患者发生临床恶化事件的独立预测因子。Kaplan⁃Meier生存分析显示当MPAMV≤6.65 cm/s、RVEDVI≥110.24 mL/m
                时临床恶化事件发生率增加(P均 < 0.001)。结论:RVEDVI与基于PC⁃MRI序列测得的MPAMV对预测CTD⁃PAH患者发生临
                床恶化事件具有重要价值,两指标联合使用可进一步提高预测效能。
               [关键词] 结缔组织病;肺动脉高压;心脏磁共振;相位对比;预后
               [中图分类号] R593.2                   [文献标志码] A                      [文章编号] 1007⁃4368(2025)11⁃1641⁃08
                doi:10.7655/NYDXBNSN250444


                Research on the application of phase contrast MRI in evaluating the prognosis of CTD⁃PAH

                                                             1
                                       1
                         1,2
                                                      2
                XU Dinghu ,LIU Wangyan ,ZHOU Qingqing ,XU Yi ,ZHU Yinsu  3*
                1 Department of Radiology,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029;Department
                                                                                                      2
                of Medical Imaging,the Affiliated Jiangning Hospital of Nanjing Medical University,Nanjing 211100;Medical
                                                                                                         3
                Image Center,the Affiliated Cancer Hospital of Nanjing Medical University(Jiangsu Cancer Hospital,Jiangsu
                Institute of Cancer Research),Nanjing 210009,China
               [Abstract] Objective:To explore the application value of pulmonary blood flow parameters based on phase contrast magnetic
                resonance imaging(PC ⁃ MRI)in assessing the prognosis of patients with connective tissue disease ⁃ associated pulmonary arterial
                hypertension(CTD⁃PAH). Methods:A retrospective analysis was conducted on the clinical data and cardiac magnetic resonance
               (CMR)parameters of 136 patients with CTD⁃PAH,as well as the main pulmonary artery(MPA)blood flow parameters measured by
                PC⁃MRI. Based on the follow⁃up results,patients were divided into two groups:the group with clinical deterioration events and the
                group without clinical deterioration events. The comparison of CMR indicators between the two groups was conducted using either
                the independent sample t⁃test or the Mann⁃Whitney nonparametric test. Independent predictors of endpoint events were screened by
                Cox proportional hazards regression. Subsequently,patients were grouped based on the optimal cut⁃off point of the receiver operating


               [基金项目] 江苏省自然科学基金(BK20231369)
                通信作者(Corresponding author),E⁃mail:zhuyinsu@njmu.edu.cn(ORICD:0000⁃0001⁃9279⁃8192)
                ∗
   106   107   108   109   110   111   112   113   114   115   116