IDEAL-IQ技术对不同年龄椎体骨髓脂肪含量的定量评价

发布时间：2018-08-06 13:26

【摘要】：目的:探讨磁共振多点非对称回波采集与迭代最小二乘法水脂分离——智能定量技术(IDEAL-IQ)对不同年龄椎体骨髓脂肪含量的定量评价。方法:对52例(18~81岁)健康志愿者进行腰椎MR检查,健康志愿者按年龄进行分组,将其分为3组,小于40岁组,40~60岁组,大于60岁组。首先常规扫描矢状位T2WI、T1WI和横轴位T2WI序列,常规扫描结束后采用IDEAL-IQ序列对L1~L5椎体水平进行扫描,相应脂肪分数值(FF值)用GE4.6后处理工作站进行测量。结果:随着受试者年龄的增加,椎体内骨髓脂肪含量逐渐增加。不同年龄组(小与40岁组、40~60岁组、大于60岁组)的L1至L5椎体骨髓脂肪含量FF值有逐渐增加的趋势。40~60岁组、大于60岁组中女性平均椎体骨髓脂肪含量FF值较同年龄组男性平均椎体骨髓脂肪含量高。结论:磁共振IDEAL-IQ技术是评价椎体骨髓脂肪含量的快速、简便的新技术。
[Abstract]:Objective: to investigate the quantitative evaluation of bone marrow fat content in vertebrae of different ages by multi-point asymmetric echo acquisition and iterative least square separation of water and lipid (IDEAL-IQ). Methods: 52 healthy volunteers (18 ~ 81 years old) were examined by lumbar spinal MRI. The healthy volunteers were divided into 3 groups according to their age. The healthy volunteers were divided into 3 groups: 40 ~ 60 years old group < 40 years old group, > 60 years old group. Firstly, sagittal T _ 2WI _ I T _ 1WI and axial T2WI sequences were scanned routinely. After routine scanning, IDEAL-IQ sequence was used to scan the level of L1~L5 vertebrae, and the corresponding fat fraction (FF) was measured by GE4.6 postprocessing workstation. Results: the bone marrow fat content increased with the age of the subjects. The FF value of bone marrow fat in the L1 to L5 vertebrae of different age groups (40 to 40 years old, > 60 years old) showed a trend of increasing gradually. The mean bone marrow fat content of female was higher than that of male at the same age. Conclusion: magnetic resonance (IDEAL-IQ) technique is a rapid and simple technique for evaluating fat content in bone marrow of vertebral body.
【作者单位】：徐州医科大学附属医院影像科;上海通用医疗磁共振科研部;
【分类号】：R445.2

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