低场MR动态增强对肝脏占位病变的诊断价值探讨

Preliminary Study on the Diagnostic Value of Dynamic Contrast-enhanced Imaging by Low-field MR in Hepatic Lesion(s)

目的 :探讨低场MR动态增强对肝脏占位病变的应用价值。方法 :应用 0 .2T永磁型磁共振仪对 2 4例肝脏占位性病变先行T1WI、T2WI平扫 ,再使用FMPSPGR(快速多层面扰相位梯度回波 )序列 ,进一步对其中 2 8个占位灶作同层块动态增强扫描。造影剂为磁显葡胺 (Gd -DTPA) 0 .2mmol/kg。结果 :在上下 5～ 8cm范围内可显示肝脏占位病变的动态强化方式 ,有助于定性诊断。结论

Objective: To evaluate the application value of dynamic contrast-enhanced imaging by low-field strength MR in hepatic lesions. Methods: Twenty-four patients with known or suspected focal liver lesion(or lesions) were studied with dynamic contrast-enhanced imaging by 0.2T MR within local slics. Results: Within 5-8cm of liver up to down, dynamic contrast-enhanced imaging by low-field strength MR was able to provide the pattern and degree of enhancement of hepatic lesion (or lesions) which is helpful for diagnosis. Conclusion:Dynamic contrast-enhanced imaging by low-field strength MR is considered to be of diagnostic value as supplementary method in focal liver lesion(s).