[1]李培岭,赵振江,魏娟,等.不同成熟阶段骨化性肌炎的MRI表现特征[J].中医正骨,2022,34(05):38-42.
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不同成熟阶段骨化性肌炎的MRI表现特征()
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《中医正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第34卷
期数:
2022年05期
页码:
38-42
栏目:
影像诊断
出版日期:
2022-05-20

文章信息/Info

作者:
李培岭1; 赵振江1; 魏娟1; 郭智萍2
(1.河南省洛阳正骨医院/河南省骨科医院,河南 郑州 450016; 2.河南省慢病健康管理重点实验室,河南 郑州 451460)
关键词:
骨化性肌炎;  磁共振成像
摘要:
目的:探讨不同成熟阶段骨化性肌炎(myositis ossificans,MO)的MRI表现特征。方法:回顾性分析49例经病理检查或随访证实的MO患者的病例资料。男35例,女14例。年龄6～90岁,中位数36岁。根据患者的X线片或CT片上MO病灶钙化程度将其分为4个等级,统计MO的病变部位并总结不同等级MO的MRI表现特征。结果:本组49例,共53个病灶,病灶位于髋部17个、肘部14个、肩部1个、臀部6个、小腿6个、大腿4个、膝部3个、手部1个、踝部1个。病灶直径0.5～25 cm,中位数4.8 cm。异位骨化与相邻骨质相连的病灶30个。1级病灶3个,T1加权像(T1 weighted image,T1WI)上均呈等信号; T2加权像(T2 weighted image,T2WI)及脂肪抑制T2加权像(fat suppression T2 weighted image,FS T2WI)上呈高信号2个、等高混杂信号1个,边界均不清,其中1个病灶边缘呈不规则线状低信号环,周围均可见羽毛状水肿; 2个病灶T1WI增强扫描显示,病灶均弥漫性强化。2级病灶4个,T1WI上呈等信号1个、等低混杂信号3个; T2WI及FS T2WI上呈高低混杂信号3个、高信号1个,边缘均可见不规则线状低信号环,周围均可见大片状水肿,其中2个病灶周围水肿呈羽毛状; 3个病灶T1WI增强扫描显示,1个病灶弥漫性强化、2个病灶周围水肿明显强化。2级/3级病灶3个,T1WI上均呈等低混杂信号,T2WI及FS T2WI上均呈高低混杂信号,病灶周围均可见水肿。3级病灶12个,T1WI上呈等低混杂信号7个、高低混杂信号3个、等信号2个; T2WI及FS T2WI上呈高低混杂信号8个、低信号2个,边缘呈低信号、中心呈高信号2个,11个周围可见水肿; 3个病灶T1WI增强扫描显示,病灶周围水肿均明显强化。3级/4级病灶12个,T1WI上呈等低混杂信号8个、等高混杂信号4个; T2WI上呈等低混杂信号5个、等高混杂信号7个; FS T2WI上呈等低混杂信号9个、等高混杂信号3个,周围均见轻度水肿。4级病灶19个,T1WI及T2WI上呈低信号10个、高信号6个、等高混杂信号2个、等低混杂信号1个; 在FS T2WI上呈低信号18个、稍高信号1个,1个周围可见水肿; 3个病灶T1WI增强扫描显示,病灶均未见强化,其中1个病灶周围感染软组织明显强化。结论:不同成熟阶段的MO具有不同的MRI表现特征。1级病灶在T1WI上呈等信号; 在T2WI及FS T2WI上呈高信号或等高混杂信号,边界不清,周围可见羽毛状水肿。2级病灶在T1WI上呈等信号或等低混杂信号; 在T2WI及FS T2WI上呈高低混杂信号或高信号,病灶边缘均可见不规则线状低信号环,周围可见大片状水肿影。3级病灶在T1WI上呈等低混杂信号、高低混杂信号或等信号; 在T2WI及FS T2WI上呈高低混杂信号,周围可见水肿。4级病灶在T1WI及T2WI上呈低信号、高信号、等高混杂信号或等低混杂信号; 在FS T2WI上呈低信号或稍高信号,周围多无水肿。

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(收稿日期:2022-01-29 本文编辑:吕宁)

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备注/Memo

备注/Memo:
基金项目:河南省科技发展计划项目(202102310362) 通讯作者:郭智萍 E-mail:gzpsohu@126.com
更新日期/Last Update: 1900-01-01