目的探讨宫颈癌M血氧水平依赖性成像(OLD)的可行性及治疗前后肿瘤乏氧功能参数变化情况,初步研究其预测疗效的价值。方法收集28例临床诊断的进展期宫颈癌患者进行氧刺激(95%O2+5%O2高氧浓度混合气体)OLD成像,其中14例完成根治性同期放化疗者还进行治疗后复查,获取肿瘤乏氧功能参数值,包括基线(空气)2。值及动态(氧刺激前后2。差值)△2’值。采用独立样本检验比较治疗前宫颈肿瘤组织与宫体肌层的基线2。值,配对检验比较治疗前肿瘤组织氧刺激前后的2’值变化,采用Wiloxon符号秩和检验比较肿瘤治疗前后基线及动态2’值的变化情况,治疗前基线及动态2‘值在临床不同疗效组间的差异比较采用非参数Mnn.WhineyU检验。结果MOLD乏氧成像快捷,图像清晰。治疗前宫颈肿瘤与宫体肌层基线2’值分别为(15.92±2.71)/和(22.76±3.79)/,差异有统计学意义(=6.474,P〈0.01)。吸人高氧混合气体后肿瘤组织2‘值下降,吸人前和吸入后分别为(15.92±2.71)/和(12.44±2.51)/,差异有统计学意义(=7.886,P〈0.01)。治疗后肿瘤基线2’值上升,治疗前后中位数分别为15.67/和20.92/;治疗后肿瘤动态(氧刺激)2‘值较前下降,治疗前后中位数分别为2.23/和1.01/,差异均有统计学意义(z值分别为-2.731和-2.103,P值均〈0.05)。疗效好和差的患者分别为8和6例,治疗前基线2。及动态(氧刺激)2’值差异均无统计学意义(P值均〉0.05)。结论MOLD成像临床可行,乏氧功能参数在治疗前后的变化间接反映了肿瘤内部氧合状态的改变情况。
OjeiveoinveigeheppliionofMOLDimginginueineevilnendhevlueofhypoxieledMpmee2*nd2*inmonioingemeneponendpediingpognoi.Mehodwenyeighfemlepienwihlollydvnedueineevilneweeudiedpopeively.MOLDimgingwpefomedin3.0Mnnewihheindogengmixue(95%02±5%O2)inhlionlenely,14pienweeomplihedwihhemepooolefoendfeheemen.hehypoxieledpmee:umoeline2*(i)nddynmi2*(2*hngedvlueefoendfeogenginhlion)weeoined.Independenewuedoompeheeline2*vlueeweenevilneiuendueinemyomeium.PiedendWiloxonignednkeweeuedoompehehypoxieledpmeehngefeogengmixueinhlionwellfeemen.Mnn-WhineyUewuedoompehediffeeneeweenhegoodndpooeponeugoup.eulhenwonvenienndheimgingwgoodwihignifinoneweenumondheueinemyomeium[evilne(15.92±2.71)/,ueinemyomeium(22.76±3.79)/,=6.474,P〈0.01].umo2vluedeeedfeogenmixuegwdminiedi:(15.92±2.71)/,ogen:(12.44±2.51)/,=7.886,P〈0.01].feemen,umoeline2vlue(iinhlion)ineedfom15.67o20.92/(Z=-2.731,P〈0.05),whilehe2doppeddown[efoeemen:2.23/,feemen:1.01/,Z=-2.I03,P〈0.051.Howeve,heewnoignifiniildiffeeneeweenhegood(n=8)ndpoo(n=6)eponeugoupfehepyinohheeline2*(goodeponemedin:17.02/,pooeponemedin:15.19/,Z=-1.278,P〉0.05)nd△2*(goodeponemedin:2.06/,pooeponemedin:2.31/,Z=-1.670,P〉0.05)ofhepe-emenn.onluionheevluionofumohypoxiuieenilfodiionhepy.hehypoxieledpmee2ndP,2deivedofMOLDimgingnindielyefleheumooxygenionu,piullyhehngeuedyheemen.