摘要
ＣＴ和ＭＲ是髓核突出的主要检查方法。作者对一组髓核突出患者术前皆行ＣＴ及ＭＲ检查，诊断结果与手术及病理所见相比较，其特点：（１）两者确诊率均为９３．２％。（２）ＣＴ组织分辨率高，对钙化，“真空征”敏感性强，并能很好地显示小关节面密度改变及椎弓关节间隙狭窄，为解释间接致腰腿痛提供一影像学征象。但ＣＴ扫描受节段性限制，难以确定韧带下型或穿韧带型突出。（３）ＭＲ薄层任意角度检查，提供清晰的形态结构。Ｔ＿１加权矢状面易于观察髓核突出与后纵韧带的关系，鉴别是否为穿韧带型突出，为选择手术或经皮髓核切吸方法提供可靠依据，本组确诊率为８３．３％。Ｔ＿２加权除提供解剖图像外，并可籍以推测突出髓核的化学成分改变。
AbstractThe athors compared the results of CT and MRIexamination with the findings during surgery in 34cases of lumbar herniated nucleus polposus.There 18males and 16 females with age ranged from 16 to 81and an average of 45 years. their chief symptoms werelow back and leg pain (32 cases)and locomotordisturbance of the lower extremities(15 cases). Muscular atrophy was seen in 5 cases. All the casehad undergone CT and MRI examination before theoperation and the comparative study of finding withthat during surgery revealed that,the imagingexamination and operation findings were in agreementin93.2%; the high resolution of CAT is superlor inthe assessment of calciflcation of ' vacuumphenomenon' and the facet joint pathology to explainindirect causes of low back pain.The routinescannings only cover limited leves and are todistinguish transligamentous from subligementousherniations. The thin and multiplane MR imagingshow clearly the relationship between the herniatedfragments and the posterior longitudinal ligernent. This information is useful for decision making beforethe operation, whether dOing open surgery ortranscutaneous nuclectomy. The T_2 weighed imagesnot only can show the anatomic morphology but alsointer the underlying chernical changes of the hernlatednucleus.
出处
《中华骨科杂志》
CAS
CSCD
北大核心
1995年第6期359-361,共3页
Chinese Journal of Orthopaedics
