磁共振3D-SPACE、3D-Ture FISP序列对踝关节韧带成像的比较研究  

Comparative study of MR 3D-SPACE and 3D-Ture FISP sequences in ligament of the ankle joint

作　　者：孙岩[1] 沈均康[3] 郝跃峰[2] 胡丹[2] 刘可夫[1] 

机构地区：[1]南京医科大学附属苏州医院放射科,江苏苏州215008 [2]南京医科大学附属苏州医院骨科,江苏苏州215008 [3]苏州大学附属二院放射科

出　　处：《实用放射学杂志》2016年第6期907-910,共4页Journal of Practical Radiology

基　　金：苏州市临床重点病种诊疗技术专项项目（LCZX201310）.

摘　　要：目的 比较三维可变反转角快速自旋回波（3D-SPACE）序列、三维真稳态进动快速成像序列（3D-Ture FISP）在踝关节韧带的成像质量。方法 20例健康志愿者和15例患者在1.5T磁共振上行3D-SPACE、3D-True FISP序列成像。在正常组中比较韧带影像质量、信噪比（SNR）、对比信噪比（CNR）；在患者组中比较对损伤韧带的显示能力。结果 3D-SPACE序列比3D-True FISP 序列的韧带SNR、CNR更高。3D-SPACE序列比3D-True FISP序列有更好地显示踝关节正常韧带及损伤韧带的能力，但在发现损伤韧带的数量上未见明显差异。结论 相比3D-True FISP序列，3D-SPACE序列能更好地显示踝关节正常和损伤韧带的解剖结构。Objective To compare the imaging quality of the ligament of ankle with the 3D-sampling perfection with application optimized contrast using different flip angle evolutions （3D-SPACE） sequence and 3D-true fast imaging with steady-state precession （3D-True FISP） sequence. Methods 20 healthy volunteers and 15 patients of ankle joints were examined with 3D-SPACE, 3D-True FISP sequences at 1.5T MRI. In control group： image quality, signal-noise ratio（SNR）, and contrast-to-noise ratio（CNR） were compared. In patient group： visualization ability of damaged ligaments were compared. Results 3D-SPACE sequence showed SNR and CNR of ligaments were higher than 3D-True FISP sequence. 3D-SPACE sequence had better capability of showing normal and injured ligament in ankle joints comparing with 3D-True FISP sequence,but no significant difference in capability for findin4g the number of damaged ligaments. Conclusion Compared with the 3D-True FISP sequence,3D-SPACE sequence can better show the anatomy of normal and injury ligament in ankle joints.

关 键 词：磁共振成像 踝关节韧带 3D-SPACE 3D-Ture FISP 

分 类 号：R445.2[医药卫生—影像医学与核医学] R686[医药卫生—诊断学]