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ID:36797590
大小:1.87 MB
页数:41页
时间:2019-05-15
《脊柱转移瘤氢质子磁共振波谱初步研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、摘要目的:对比观察脊柱转移瘤与健康对照组椎体的氢质子磁共振波谱(1H-MRS)表现,定量分析和评价两组间椎体的脂/水比率(LWR)、脂肪百分含量(FF%)及其与年龄的相关性。方法:①应用3.oT磁共振扫描仪对23例经临床及病理证实的脊柱转移瘤患者及25例健康对照者进行常规磁共振成像检查;②选择肿瘤累及的感兴趣椎体和对照组L2椎体进行1H-MRS成像。采用单体素频谱(SV)空间定位和点分辨频谱(PRESS)序列对两组选定的椎体进行波谱采集。重复时间(TR)=2000毫秒(ms),回波时间(TE)=35ms,感兴趣容积(VOI)为lxlxlcm3—2x2x2cm3,选用水和脂肪不被抑制
2、的选项;③对比观察两组选定椎体的1H-MRS的波形表现;④应用统计学方法对转移瘤组与对照组感兴趣椎体的脂/水比率(LWR)、脂肪百分含量(FF%)及其与年龄的相关性进行定量对比分析。结果:①脊柱转移瘤组椎体与对照组椎体1H-MRS都表现为脂峰和水峰两个波峰。与对照组比较,转移瘤组椎体的脂峰明显降低或消失,水峰增高。②转移瘤组椎体的平均LWR为0.038±O.024,平均FF%为3.66±2.20%;对照组椎体的平均LWR为0.64+0.20,平均FF%为37.9l±8.66%;转移瘤组的LWR、FF%明显低于对照组(t=14.7,p3、组患者的平均年龄为59.5±10.2岁,LWR、FF%与其年龄无相关性(r=O.142,旷0.519>0.05和r=O.151,/7=0.491>0.05),对照组受检者平均年龄为56.2±9.3岁,LWR、FF%与年龄具有相关性(r=O.955:仄0.01和r=O.936;仄O.01)。结论:脊柱转移瘤组与健康对照组比较,1H-MRS显示脂峰明显降低或消失,水峰增高;LWR及FF%值均明显降低,两组间比较具有显著性差异,转移瘤组LWR、FF%值与年龄无相关性,对照组LWR值与年龄具有正相关性,随年龄增大其椎体的LWR增大;FF%与年龄亦具有相关性,随年龄的增大椎体的脂肪含量越高。4、1H-MRS可以量化地分析脊柱转移瘤椎体与对照组椎体的水和脂肪的变化,为临床提供活体椎体的生物代谢信息。关键词:脊柱:转移瘤;氢质子磁共振波谱、健康对照、年龄相关性AbstractObjective:Toobserveprotonmagneticresonancespectroscopy(1H.MRS)performanceofvertebraewithmetastatictumorsandhealthycontrolvertebrae,andtoquantitativelyanalyzeandevaluatethelipid/waterratio(LWR),percentageo5、ffat(FF%)anditscorrelationwithageofthetwogroupsofvertebralbodys.Method:①23clinicallyandpathologicallyconfirmedcaseswithspinalmetastasesand25healthycaseswereperformedwithconventionalMRIby3.0TMR.②1H—MRSimagingoftumor-involvedvertebralbodyandL2vertebralbodywereobtained.SingleVoxelsequence(SVS)and6、pointresolvedspectroscopysequence(PRESS)wereselectedforspectralacquisitionofthevertebralbody.R面etitiontime(TR)=2000ms,echotime(TE)=35ms,thevolumeofinterest(VOI)=lxlxlcm’--2x2x2cm3,waterandfatsuppressionnotselected.③1H—MRSwaveformperformanceofselectedvertebraeswereobserved.④Applicatingstatistic7、almethods,thefat/waterratio(LWR),percentageoffat(FF%)anditsage--correlationoftheinterestedvertebralbodyswerequantitativelyanalyzedcomparingthemetastatictumorgroupwithcontrolgroup.Result:①Vertebral1H—MRSofmetastasesgroupandcontrolgroupha
3、组患者的平均年龄为59.5±10.2岁,LWR、FF%与其年龄无相关性(r=O.142,旷0.519>0.05和r=O.151,/7=0.491>0.05),对照组受检者平均年龄为56.2±9.3岁,LWR、FF%与年龄具有相关性(r=O.955:仄0.01和r=O.936;仄O.01)。结论:脊柱转移瘤组与健康对照组比较,1H-MRS显示脂峰明显降低或消失,水峰增高;LWR及FF%值均明显降低,两组间比较具有显著性差异,转移瘤组LWR、FF%值与年龄无相关性,对照组LWR值与年龄具有正相关性,随年龄增大其椎体的LWR增大;FF%与年龄亦具有相关性,随年龄的增大椎体的脂肪含量越高。
4、1H-MRS可以量化地分析脊柱转移瘤椎体与对照组椎体的水和脂肪的变化,为临床提供活体椎体的生物代谢信息。关键词:脊柱:转移瘤;氢质子磁共振波谱、健康对照、年龄相关性AbstractObjective:Toobserveprotonmagneticresonancespectroscopy(1H.MRS)performanceofvertebraewithmetastatictumorsandhealthycontrolvertebrae,andtoquantitativelyanalyzeandevaluatethelipid/waterratio(LWR),percentageo
5、ffat(FF%)anditscorrelationwithageofthetwogroupsofvertebralbodys.Method:①23clinicallyandpathologicallyconfirmedcaseswithspinalmetastasesand25healthycaseswereperformedwithconventionalMRIby3.0TMR.②1H—MRSimagingoftumor-involvedvertebralbodyandL2vertebralbodywereobtained.SingleVoxelsequence(SVS)and
6、pointresolvedspectroscopysequence(PRESS)wereselectedforspectralacquisitionofthevertebralbody.R面etitiontime(TR)=2000ms,echotime(TE)=35ms,thevolumeofinterest(VOI)=lxlxlcm’--2x2x2cm3,waterandfatsuppressionnotselected.③1H—MRSwaveformperformanceofselectedvertebraeswereobserved.④Applicatingstatistic
7、almethods,thefat/waterratio(LWR),percentageoffat(FF%)anditsage--correlationoftheinterestedvertebralbodyswerequantitativelyanalyzedcomparingthemetastatictumorgroupwithcontrolgroup.Result:①Vertebral1H—MRSofmetastasesgroupandcontrolgroupha
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