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1、实用放射学杂志2006年3月第22卷第3期JPractRadio,lMar2006,Vo.l22,No.3#317#骨梗死的影像学诊断刘玉珂,王锐,张敏(河南省洛阳正骨医院医学影像中心,河南洛阳471002)摘要:目的探讨骨梗死的影像学特征。方法搜集经临床随访及病理证实的骨梗死13例,男5例,女8例。所有病例均行X线检查,其中同时行CT检查者4例,行MR检查者7例,3种检查都进行者2例。将骨梗死分为早、中、晚期,分析X线、CT及MRI表现,总结其影像学特征。结果骨梗死早、中期X线、CT表现为局部的骨质疏松及斑点
2、状钙化,MRT1WI骨梗死灶中央部分呈等或略低信号,边缘为迂曲匐行的低信号带,T2WI中央部分呈等或略高信号,边缘呈迂曲的高信号带;晚期X线及CT呈不规则、迂曲状骨质硬化,MRT1WI及T2WI均呈低信号。结论MRI是诊断早期骨梗死最有效的方法,可以发现早期病变,X线平片对中晚期病变有帮助,CT较平片敏感,骨梗死的诊断应三者相结合。关键词:骨梗死;X线摄影术;体层摄影术,X线计算机;磁共振成像中图分类号:R681;R814.42;R445.2文献标识码:A文章编号:1002-1671(2006)03-0317-
3、04ImagingDiagnosisoftheBoneInfarctLIUYU-ke,WANGRui,ZHANGMin(MedicalImagingCenter,LuoyangOrthopedicHospital,Luoyang,HenanProvince471002,China)Abstract:ObjectiveToevaluatetheimagingcharacteristicsoftheboneinfarct.Methods13casesoftheboneinfarctprovedbyclinicalm
4、anifestationandsurgicalpathologywerecollected,therewere5malesand8females.AllpatientshadX-rayfilms,4wereimagedwithCTscanning,7wereimagedwithMRI,and2underwentallthreetechniques.Theboneinfarctwereclassifiedintotheearly,themiddleandlaterstages.X-ray,CTandMRIfind
5、ingsofboneinfarct,wereanalysedcharacteristics.ResultsPartialosteoporosinandpunctatecalcificationscouldbeseenonX-rayandCT,intheearlyandmiddlestages,whichpresentedasiso-/low-signalonTWI1andiso-/high-signalonT2WIinthecenteroftheboneinfarctwithatortuouslow-signa
6、lonT1WIandhigh-signalonT2WIzonearound.Inthelaterstages,theboneinfarctwascharacterizebyirregularsclerosisandtortuouscalcificationonX-rayandCT,andbylow-signalonbothT1WIandT2WI.ConclusionMRIisthemosteffectivewaytofindtheboneinfarctintheearlystages,X-rayishelpfu
7、lindiagnosingtheboneinfarctinthemiddleandlaterstages,CTismoresensitivethanX-ray.X-ray,CTandMRIshouldbecombinedindiagnosingtheboneinfarct.Keywords:boneinfarct;radiography;tomography,X-raycomputed;MRI骨梗死临床相对少见,发病机理众说纷纭,至今尚1.2检查方法13例均行X线检查,其中同时行CT无定论,仅凭X线及CT检查临
8、床较易误诊或漏诊,检查者4例,行MR检查者7例,3种检查都进行者2MRI对其具有较高的敏感性和特异性,明显提高了骨例。X线检查采用KodakCR设备,CT检查采用Picker梗死的早期发现和鉴别诊断水平。现回顾性总结、分IQCT机,层厚4mm,层距3mm,矩阵512@512,骨窗:析我院近年来13例骨梗死的影像学表现,以提高诊断窗宽1500~3000HU,窗位300~700HU。MR检