Pfirrmann 椎間盤退變的MRI(T2WI)分級標準

Pfirrmann椎間盤退變的MRI(T2WI)分級標準Pfirrmann椎間盤退變的MRI(T2WI)分級標準Pfirrmann椎間盤退變的MRI(T2WI)分級標準xxx公司Pfirrmann椎間盤退變的MRI(T2WI)分級標準文件編號：文件日期：修訂次數(shù)：第1.0次更改批準審核制定方案設計，管理制度Pfirrmann椎間盤退變的MRI(T2WI)分級標準

分級結構髓核與纖維環(huán)邊界信號椎間盤高度

Ⅰ質均，色亮白清高或等于腦脊液正常

Ⅱ非均質，有或無水平帶清高或等于腦脊液正常

Ⅲ非均質，灰不清中等正?；蜉p度降低

Ⅳ非均質，灰或黑消失中等或低信號正?；蛑卸冉档?/p>

Ⅴ非均質，黑消失低信號椎間盤間隙塌陷Figure1.A-E,腰椎間盤退變的分級系統(tǒng)，逐漸退變嚴重:GradeI:thestructureofthediscishomogeneous,withbrighthyperintensewhitesignalintensityanynormaldischeight.GradeII:thestructureofthediscisinhomogeneous,withthehyperintensewhitesignal.Thedistinctionbetweennucleusandannulusisclear,andthedischeightisnormal,withorwithoutahorizontalgraybands.GradeIII:thestructureofthediscisinhomogeneous,withanintermittentgraysignalintensity.Thedistinctionbetweennucleusandannulusisunclear,andthedischeightisnormalorslightlydecreased.GradeIV:thestructureofthediscisinhomogeneous,withahypointensedarkgraysignalintensity.Thedistinctionbetweenthenucleusandannulusislost,thedischeightisnormalormoderatelydecreased.GradeV:thestructureofthediscisinhomogeneous,withahypointenseblacksignalintensity.Thedistinctionbetweennucleusandannulusislost,andthediscspaceiscollapsed.GradingisperformedonT2-weightedMid-sagittalfastspin-echoimages.

Pfirrmann腰椎間盤突出MRI分級是一種很直觀的分級，是MRI橫斷面上突出間盤和神經(jīng)跟的關系確定的一種分級（如下圖所示）。

PfirrmannI級突出間盤與神經(jīng)跟無接觸

PfirrmannII級突出間盤與神經(jīng)根接觸，神經(jīng)根無移位

PfirrmannIII級突出間盤與神經(jīng)根接觸，神經(jīng)根向后移位

PfirrmannIV級突出間盤與神經(jīng)根接觸，神經(jīng)根壓至椎管后壁

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