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3.0
T_CMR
定量
技术
效能
评估
短期
预后
价值
李楠
实用医学杂志2023年第39卷第9期The Journal of Practical Medicine2023 Vol.39 No.9医 学 检 查 与 临 床 诊 断doi:10.3969/j.issn.10065725.2023.09.019基金项目:河北省医学科学研究课题计划(编号:20191779)3.0T CMR定量技术诊断急性病毒性心肌炎效能及评估短期预后的价值李楠康志雷衡水市人民医院(河北衡水 053000)【摘要】目的探讨3.0T心脏磁共振(CMR)定量技术诊断急性病毒性心肌炎(AVM)效能及评估短期预后的价值。方法选取衡水市人民医院2019年1月至2021年8月疑似AVM患者115例,以临床诊断为参照,分为AVM组与非AVM组,评价3.0T CMR定量参数 T2比值、早期强化成像(EGE)比值、延迟强化成像(LGE)体积、LGE占左心室质量百分比 对AVM的诊断价值,并对AVM患者随访3个月,统计预后情况,对比不同预后患者 3.0T CMR 定量参数,分析各参数与预后的关系。结果临床诊断显示,确诊为AVM患者81例,非AVM患者34例;AVM组T2比值、EGE比值、LGE体积、LGE占左心室质量百分比高于非AVM组(P 0.05);T2比值、EGE比值、LGE体积、LGE占左心室质量百分比联合诊断AVM的AUC 0.908(95%CI:0.8400.954)明显大于各参数单一诊断(均P 0.05);以ROC曲线获取的最截断值为界,分为阳性与阴性,T2比值、EGE比值、LGE体积、LGE占左心室质量百分比阳性患者AVM发生风险是阴性患者的8.815倍、2.938倍、2.183倍、4.337倍;随访3个月,AVM组预后良好67例,预后不良14例,预后不良患者T2比值、EGE 比值、LGE 体积、LGE 占左心室质量百分比高于预后良好患者(P 0.05);T2比值、EGE 比值、LGE体积、LGE占左心室质量百分比与AVM短期预后呈负相关(P 0.05)。结论3.0T CMR定量参数可作为临床诊断 AVM 的可靠影像学检查方式,还能用于短期预后评估中,可为临床诊治提供有效的客观信息。关键词 急性病毒性心肌炎;3.0T心脏磁共振定量技术;诊断价值;短期预后【中图分类号】R542.2;R445.2The value of 3.0T CMR quantitative technique for diagnosing the efficacy of acute viral myocarditis and assessing shortterm prognosisLI Nan,KANG Zhilei.Department of Medical Imaging,Hengshui Peoples Hospital,Hengshui,053000,China【Abstract】ObjectiveTo investigate the value of quantitative 3.0T cardiac magnetic resonance(CMR)techniques for diagnosing the efficacy of acute viral myocarditis(AVM)and assessing shortterm prognosis.Methods115 patients with suspected AVM from January 2019 to August 2021 in our hospital were selected and divided into AVM and nonAVM groups with reference to clinical diagnosis,to evaluate the diagnostic value of 3.0TCMR quantitative parametersT2 ratio,early intensification imaging(EGE)ratio,delayed intensification imaging(LGE)volume,and LGE as a percentage of left ventricular massfor AVM,and patients with AVM were Patientswith AVM were followed up for 3 months,prognosis was counted,3.0T CMR quantitative parameters were compared in patients with different prognosis,and the relationship between each parameter and prognosis was analyzed.ResultsClinical diagnosis showed that 81 patients with confirmed AVM and 34 patients with nonAVM;T2 ratio,EGE ratio,LGE volume,and LGE as a percentage of LV mass were higher in the AVM group than in the nonAVM group(P 0.05);the AUC of T2 ratio,EGE ratio,LGE volume,and LGE as a percentage of LV mass forthe combined diagnosis of AVM was 0.908(95%CI:0.840 to 0.954)was significantly greater than the single diagnosis of each parameter(all P 0.05).Using the most truncated value obtained from the ROC curve as the boundary,divided into positive and negative,the risk of AVM occurrence was 8.815 times,2.938 times,2.183 times,and 4.337 times higher in patients with positive T2 ratio,EGE ratio,LGE volume,and LGE as a percentage of LVmass than in patients with negative;at 3month followup,the AVM group had a good prognosis in 67 cases,apoor prognosis in 14 cases,and a poor prognosis in T2 ratio,EGE ratio,LGE volume,and percentage of LGE toLV mass were higher than those of patients with good prognosis(P 0.05);T2 ratio,EGE ratio,LGE volume,and percentage of LGE to LV mass were negatively correlated with shortterm prognosis of AVM(P 0.05).1169实用医学杂志2023年第39卷第9期The Journal of Practical Medicine2023 Vol.39 No.9ConclusionThe 3.0T CMR quantitative technique can be used as a reliable imaging modality for clinical diagnosis of AVM and also for shortterm prognostic assessment,which can provide effective objective information for clinical diagnosis and treatment.【Key words】Acute viral myocarditis;3.0T quantitative cardiac magnetic resonance technique;diagnostic value;shortterm prognosis急性病毒性心肌炎(Acute viral myocarditis,AVM)是临床常见心肌病毒感染性疾病,可造成局限性或弥漫性心肌炎病变,据统计,约有5%病毒感染可累及心脏,轻者无自觉症状,重者可引发心律失常、室性心动过速、心源性休克及心力衰竭,甚至导致猝死,预后较差12。故及早准确诊断至关重要。3.0T 心脏磁共振(Cardiac magnetic resonance,CMR)属于无创检查手段,具有多方位成像、组织分辨率高、大视野及可重复性好等优点,可清晰呈现心脏形态、功能及组织学改变,尤其是其 T2 加权成像、早期强化成像(Early gadoliniumenhancement,EGE)、延迟强化成像(Late gadoliniumenhancement,LGE)等定量技术能通过量化心脏病变情况,为临床提供客观的影像学数据支持,在多种心脏疾病诊治中发挥重要作用34。但关于3.0TCMR定量技术在AVM中的诊断价值及与短期预后的关系仍有待验证。为此,本研究尝试探讨该课题,在为临床诊治提供可靠的影像学诊断方式。1资料与方法1.1一般资料选取衡水市人民医院2019年1月至 2021 年 8 月疑似 AVM 患者 115 例作为研究对象,其中男 63 例,女 52 例,年龄 2452 岁,平均(37.954.23)岁,体 质 指 数 1731 kg/m2,平 均(23.641.85)kg/m2。本研究经我院伦理委员会审批通过。1.2选取标准纳入标准:(1)均伴有乏力、疲劳、气促、心肌、胸痛等临床症状;(2)就诊前13周内有病毒感染史;(3)CT冠状动脉成像、冠状动脉造影检查显示阴性;(4)AVM均经心肌酶学、超声心动图、心电图、实验室指标等临床检查确诊,经心内膜心肌活检证实,且符合相关诊断标准5;(5)患者均知情本研究,自愿签订知情同意书。排除标准:(1)合并毒物、药物诱发心脏损伤者;(2)伴有结缔组织病、甲状腺病、代谢性疾病等其他影响心肌功能疾病者;(3)存在冠心病、二尖瓣脱垂综合征等其他心脏疾病者;(4)心肝肾肺等其他重要脏器功能障碍者;(5)合并其他炎性、感染性疾病者;(6)伴有CMR检查禁忌或难以完成检查者;(7)妊娠期、哺乳期女性。1.3方法(1)3.0T CMR检查方法:采用美国GE公司的HDxt3.0T超导医用磁共振系统、18通道腹部线圈进行扫描检查,利用回顾性心电门控获取数据,扫描方式包含T2加权成像、EGE及LGE,相关参数设置:视野为220 mm280 mm,矩阵为200256,重复时间为 3 ms,翻转角为 45,回波时间为1.5 ms,层厚为8 mm,层间隔为0,屏气扫描采集信号1次,自由呼吸扫描采集信号3次;于静脉注射钆喷钽酸铵(0.1 mmol/kg)之前和注射之后 3 min内获取快速自旋回波序列强化前后SA位、HLA位加权成像,EGE 扫描结束后,再次静脉注射 0.1mmol/kg钆喷钽酸铵,于710 min后利用3D相位敏感反转恢复序列进行 SA 位、HLA 位、VLA 位LGE成像。(2)定量参数测定方法:T2比值测定方法:于 T2 高信号区域、所及层面骨骼肌区域分别选择 2 个感兴趣区,计算高信号区域与骨骼肌区域信号强度比值,即为 T2 比值;EGE 比值测定