对比分析HR-T_1 WI和常规T_1 WI在显示胸壁结构及病变中的应用  

Comparative Study of HR-MRI T_1 WI and MRI T_1 WI Techniques in Displaying Chest Wall Structure and Pleural Disease

作　　者：林志超[1] 罗良平[1] 陈汉芳[1] 刘斯润[1] 吴何嘉[1] 

机构地区：[1]暨南大学第一附属医院影像中心,广东广州510630

出　　处：《实用放射学杂志》2007年第4期458-460,共3页Journal of Practical Radiology

基　　金：广东省自然科学基金项目(编号:5006074)

摘　　要：目的探讨高分辨磁共振成像(HR-MRI)技术在显示胸壁结构及病变中的应用。方法44例胸膜病变的患者行常规T1WI、T2WI及HR-MRI T1WI平扫,再行T1WI及HR-MRI T1WI增强扫描。对HR-MRI T1WI与常规T1WI的图像质量(胸壁结构显示清晰度、对比噪声比及信号强度对比度)进行比较。结果在胸壁结构显示清晰度评分达到3分,平扫时HR-MRI T1WI和常规T1WI分别为68%,45%。增强时分别为90%,63%(P<0.05)。其中20例平扫与增强时HR-MRI T1WI的对比噪音比和信号强度对比绝对平均值均高于常规T1WI(P<0.05)。结论HR-T1WI具有较高图像空间分辨力及信噪比,可作为胸壁病变检查常规扫描的重要补充序列。Objective To explore the role of HR - MRI T1WI technique in displaying chest wall structure and pleural disease. Methods 44 patients with pleural disease were examined with T1WI,T1WI,HR - MRI T1WI,HR - MRI T1WI and T1WI MR contrast - enhancement scanning. The image quality including clearness, contrast to noise ratio （ CNR ） and signal to intensity ratio （ SIR ） of HR - MRI T1WI and T1WI scan in the diagnosis of pleural disease were compared. Results Compared with T1WI,in showing chest wall structure by HR - MRI T1 WI sequence was clearer than that of the T1 WI sequence （P 〈 0.05 ）. Moreover, the absolute values of CNR and SIR of HR - MRI images of 20 pleural lesions were all higher than that of routine MRI （ P 〈 0.05 ）. Conclusion HR - MRI T1WI is of high spatial resolution and CNR,so it can be applied in the diagnosis of pleural disease as a supplementary method for routine MRI.

关 键 词：胸膜 磁共振成像 高分辨技术 

分 类 号：R561[医药卫生—呼吸系统] R445.2[医药卫生—内科学]