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1.
目的:分析椎管闭合不全的MRI表现特点,评价MRI诊断和鉴别诊断的价值。方法:回顾性分析27例椎管闭合不全的MRI资料,经手术证实9例,MR表现典型18例。结果:MRI显示偏侧脊髓脊膜膨出1例,腰段椎管后裂开,脊髓裂开,左侧脊髓脊膜向后膨出。脊髓纵裂2例,脊髓硬膜囊被骨性或纤维间隔分开。脂肪脊髓裂5例,骶管裂开且皮下脂肪突入椎管内,脂肪瘤—基板界面位于骶管内。脂肪脊髓脊膜膨出2例,腰骶管后裂开且腰骶皮下脂肪瘤通过裂口疝入硬膜下,横断位见脂肪瘤—基板界面位于骶管外。脊膜膨出6例,腰骶背部皮下囊状突出物与蛛网膜下腔脑脊液相通。硬膜下脂肪瘤4例,硬膜下病变在T1WI及T2WI上呈高信号。终丝脂肪瘤4例,T1加权像上见终丝结节状、线条状脂肪信号。椎管内畸胎瘤2例,硬膜囊内不均匀信号团块状占位。骶管内脊膜囊肿1例,骶管内椭圆形在T1WI呈低信号,T2WI呈高信号影。结论:每型椎管闭合不全有相应的MRI表现特点,大多数MRI可准确诊断。  相似文献   

2.
肥厚性硬脊膜炎的影像学表现(附2例报告)   总被引:1,自引:0,他引:1  
目的探讨肥厚性硬脊膜炎的影像学表现。方法回顾性阅读2例经手术病理证实的肥厚性硬脊膜炎病人的CT和MRI资料,结合现有文献分析其临床及影像学表现特征。结果2例病人的CT和MR表现为硬脊膜增厚,分别为5.2mm、13mm,横断面上呈不规则新月形。结论肥厚性硬脊膜炎具有典型的影像学表现,结合临床可做出正确诊断。  相似文献   

3.
目的:探讨中枢神经系统成血管细胞瘤的MRI影像特征及鉴别诊断.材料和方法:回顾性分析22例经手术病理证实的成血管细胞瘤之MRI表现.结果:22例共检出50个病灶.5例为多发病灶.40个病灶位于双侧小脑及蚓部,9个病灶位于延髓及脊髓,1个病灶位于幕上.12个病灶呈大囊小结节型,36个为实质型,2个单纯囊型.囊性病灶T1WI囊液呈低信号,T2WI呈高信号;壁结节T1WI呈稍低或等信号,T2WI呈稍高和高信号改变.实质型病灶T1WI呈等信号,T2WI呈稍高或高信号改变.增强扫描壁结节和实质肿块明显增强,灌注成像可见壁结节和实性肿块呈明显高灌注表现.结论:成血管细胞瘤之MRI有特征性表现,MRI增强扫描及灌注成像有助于诊断和鉴别诊断.  相似文献   

4.
目的 探讨脊膜瘤少见的磁共振成像(magnetic resonance imaging,MRI)的影像征象,以提高对脊膜瘤的认识.方法 对12例经病理证实的脊膜瘤MRI少见影像征象进行回顾性分析.结果 肿瘤在椎管内分布不同,硬膜下5例,硬膜内外均累及者5例,硬膜外2例.肿瘤生长方式不同,4例肿瘤呈哑铃状、跨越椎间孔生长,3例肿瘤呈弥漫生长.肿瘤部位分布广泛,从C1~L1 均可见肿瘤发生,颈段7例,颈胸段1例,胸段1例,胸腰段近脊髓圆锥水平2例,C7~L1水平1例.肿瘤在T1WI呈低信号(4例)或等信号(8例);T2WI呈低信号(1例)、等信号(9例)或混杂信号(2例);12例均进行增强扫描,7例肿瘤呈中等程度强化,5例肿瘤明显强化,其中2例可见硬膜尾征;12例术前均未进行准确诊断.结论 硬膜内外、硬膜外、伴椎间孔扩大、弥漫生长的脊膜瘤少见,诊断相对困难,需与神经源性肿瘤、淋巴瘤、室管膜瘤等鉴别.  相似文献   

5.
圆形.病变可累及椎管、附件和邻近软组织.囊性病灶在T1WI呈低信号,T2WT呈高信号.囊性病灶内见多发大小不等的子囊影,并在T2WI上见低信号的包虫囊壁.T2脂肪抑制序列及脊髓水成像技术对病变的显示具有优势.增强扫描可呈轻度强化.灌注成像中呈现中等灌注改变.结论 MRI可清楚显示椎体、椎管、附件及邻近软织的包虫囊肿,对脊柱包虫病的诊断具有独特优势.  相似文献   

6.
原发性低颅压综合征的MRI表现   总被引:1,自引:0,他引:1  
目的 探讨原发性低颅压综合征(SIH)的MRI表现.资料与方法 回顾分析8例经临床证实的SIH患者的临床和MRI资料.结果 头颅MRI示硬膜下积液、硬脑膜增厚8例,静脉窦和脑静脉扩张7例,脑下垂2例,垂体增大1例.增强扫描6例均见硬膜均匀性增厚强化.2例脊髓MRI示蛛网膜下腔均匀变窄,硬脊膜外积液.腰穿结果提示8例患者脑脊液压力均<60 mm H2O.结论 MRI能显示SIH的特征性表现,有助于临床诊断.  相似文献   

7.
目的分析硬脑膜肥厚的MRI表现,探讨不同病理情况的影像学特点,以提高定性诊断水平。方法回顾分析36例经手术病理或临床证实的硬脑膜肥厚性疾病例纳入研究,其中男20例,女16例,年龄6~68岁,平均年龄(34±3.5)岁,采用西门子1.5T超导MR成像仪,完成横断面T2WI、T1WI、FLAIR和矢状面T2WI平扫,横断面、冠状面和矢状面T1WI增强及横断面FLAIR增强,2名高级职称影像医师共同回顾性分析MRI表现。结果低颅压综合征10例(27.8%),肥厚性硬脑膜炎10例(27.8%),其中1例为特发性,9例为感染性,硬脑膜转移瘤8例(22.2%),其中合并脑实质内小结节病灶5例,单纯局限性脑膜增厚3例,白血病颅内浸润1例(2.8%),系统性黄斑狼疮1例(2.8%),脑外伤后血肿形成2例(5.6%),脑肿瘤放疗后2例(5.6%),侵袭性脑膜瘤2例(5.6%),上述病例于MRI检查上均表现为硬脑膜弥漫性或局限性增厚。结论硬脑膜增厚疾病种类繁多,但根据病灶所发生的范围和是否伴随软脑膜及脑实质内强化结节等特征,并结合临床表现,多数能做出明确诊断。  相似文献   

8.
目的探讨白血病硬脊膜浸润并形成硬膜外肿块的MRI表现及其诊断和鉴别诊断。方法回顾性分析经病理证实的2例白血病硬脊膜浸润并形成硬膜外肿块的影像学和临床资料。2例均行确诊前及治疗后MRI平扫及增强扫描。结果 2例均表现为胸段长范围硬脊膜增厚并形成局限性硬膜外软组织块,压迫并半包绕脊髓;呈等或略长T1、稍长T2信号,增强扫描硬脊膜增厚,硬膜外肿块均匀中度或明显强化。2例均伴有胸椎椎体的异常浸润。经抗白血病治疗后复查MRI显示硬膜外肿块减小几近消失。结论椎管硬膜外腔有软组织块占位,MRI与脊髓相比呈等或稍长T1、略长T2信号,增强扫描均匀中度或明显强化时,应考虑白血病浸润的可能。  相似文献   

9.
目的:探讨MRI对结核性脊髓脊膜炎的诊断价值。方法:对21例结核性脊髓脊膜炎增强前后的MRI进行回顾性分析。结果:所有21例MRI平扫均可见脊膜受累,主要表现为脊膜不规则增厚,蛛网膜下腔狭窄或闭塞、分隔样改变、囊肿形成,神经根增厚;增强扫描表现为增厚的脊膜呈线状、斑块状、结节状和环状强化。本组21例中脊髓肿胀17例,脊髓空洞6例,髓内结核瘤5例。结论:MRI平扫和增强扫描可清晰显示结核性脊髓脊膜炎的病变部位和累及范围,可为临床治疗及判断预后提供影像学参考。  相似文献   

10.
肥厚性硬膜炎(hypertrophic pachymeningitis,HP)是一种以硬脑(脊)膜增厚和炎症性纤维化为特征的少见疾病.硬脑膜、硬脊膜可单独发生,亦可同时受累,发生于硬脊膜的肥厚性硬脊膜炎(hypertrophic spinal pachymeningitis,HSP)相对罕见,临床多无明显病因,故称特发性肥厚性硬脊膜炎(idiopathic hypertrophic spinal pachymeningitis,IHSP).笔者遇到一例,现结合文献报道如下.  相似文献   

11.
The Knee injury and Osteoarthritis Outcome Score (KOOS) is a self-administered instrument measuring outcome after knee injury at impairment, disability, and handicap level in five subscales. Reliability, validity, and responsiveness of a Swedish version was assessed in 142 patients who underwent arthroscopy because of injury to the menisci, anterior cruciate ligament, or cartilage of the knee. The clinimetric properties were found to be good and comparable to the American version of the KOOS. Comparison to the Short Form-36 and the Lysholm knee scoring scale revealed expected correlations and construct validity. Item by item, symptoms and functional limitations were compared between diagnostic groups. High responsiveness was found three months after arthroscopic partial meniscectomy for all subscales but Activities of Daily Living.  相似文献   

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14.
Introduction Ankle sprains are the most common musculo-skeletal injury that occurs in athletes,particularly in sports that require jumping and landing on one foot such as soccer,and basketball(1-4).These injuries often result in significant time loss from participation,long-term disability,and have a major impact on health care costs and resources(5-8).  相似文献   

15.
Objective To investigate endovascular treatment of traumatic direct carotid-cavernous fistulas (CCF) and their complications such as pseudoaneurysms. Methods: Over a five-year period, 22 patients with traumatic direct CCFs were treated endovascularly in our institution. Thirteen patients were treated once with the result of CCF occluded, 8 twice and 1 three times. Treatment modalities included balloon occlusion of the CCF, sacrifice of the ipsilateral internal carotid artery with detachable balloon, coll embolization of the cavernous sinus and secondary pseudoaneurysms, and covered-stem management of the pseudoaneurysms. Results All the direct CCFs were successfully managed endovascularly. Four patients developed a pseudoaneurysm after the occlusion of the CCF with an incidence of pseudoaneurysm formation of 18.2% (4/22). A total number of 8 patients experienced permanent occlusion of the ICA with a rate of ICA occlusion reaching 36.4% (8/22). Followed up through telephone consultation from 6 months to 5 years, all did well with no recurrence of CCF symptoms and signs. Conclusion Traumatic direct CCFs can be successfully managed with endovascular means. The pseudoaneurysms secondary to the occlusion of the CCFs can be occluded with stent-assisted coiling and implantation of covered stents.  相似文献   

16.
Acute limping may be the result of multiple pathologies in children. The differential diagnosis varies based on the age of the child. Irrespective of age, the initial imaging work-up includes AP and frog leg radiographs of the pelvis and ultrasound; MRI may sometimes be helpful. In children less than 3 years, infections and trauma are most frequent. MRI is the imaging modality of choice when osteomyelitis is clinically suspected. Between the ages of 3 and 10 years, transient synovitis of the hip and Legg-Calvé-Perthes disease are main considerations but infection, inflammation and focal bony lesions are also considered. In children over 10 years, slipped capital femoral epiphysis also is considered.  相似文献   

17.
Introduction Interventional Radiology has evolved into a specialty having enormous input into the care of the traumatized patient.In all hospitals,regardless of size,the Interventional Radiologist must consider their relationships with the trauma service in order to  相似文献   

18.
The ultrasonographic diagnosis of pneumothorax is based on the analysis of artifacts. It is possible to confirm or rule out pneumothorax by combining the following signs: lung sliding, the A and B lines, and the lung point. One fundamental advantage of lung ultrasonography is its easy access in any critical situation, especially in patients in the intensive care unit. For this reason, chest ultrasonography can be used as an alternative to plain-film X-rays and computed tomography in critical patients and in patients with normal plain films in whom pneumothorax is strongly suspected, as well as to evaluate the extent of the pneumothorax and monitor its evolution.  相似文献   

19.
KEY POINTS· Carbohydrate intake during exercise can delay the onset of fatigue and improve performance of prolonged exercise as well as exercise of shorter duration and greater intensity (e.g., continuous exercise lasting about 1h and intermittent high-intensity exercise), but the mechanisms by which performance is improved are different.  相似文献   

20.
The purpose of this study was twofold: (a) to investigate the prevalence of hip and groin pain in sub‐elite male adult football in Denmark and (b) to explore the association between prevalence and duration of hip and groin pain in the previous season with the Copenhagen Hip and Groin Outcome Score (HAGOS) in the beginning of the new season. In total 695 respondents from 40 teams (Division 1–4) were included. Players completed in the beginning of the new season (July–Sept 2011) a self‐reported paper questionnaire on hip and/or groin pain during the previous season and HAGOS. In total 49% (95% CI: 45–52%) reported hip and/or groin pain during the previous season. Of these, 31% (95% CI: 26–36%) reported pain for >6 weeks. Players with the longest duration of pain during the previous season had the lowest HAGOS scores, when assessed at the beginning of the new season, P < 0.001. This study documents that half of sub‐elite male adult football players report pain in the hip and/or groin during a football season. The football players with the longest duration of pain in previous season displayed the lowest HAGOS scores in the beginning of the new season.  相似文献   

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