SENSE/BALANCE/FFE技术在肝脏肿瘤诊断的应用

Application of SENSE /BALANCE /FFE MR imaging to hepatic tumors

目的评价SENSE/BALANCE/FFE技术在肝脏肿瘤性病变中的应用。方法对利用SENSE/BALANCE/FFE技术行MRI检查的104例肝脏肿瘤患者的190个病灶,进行图像评价和定量分析,并与采用呼吸门控频率选择脂肪抑制T2WI序列(TSE/T2WI/SPIR)的图像比较。结果SENSE/BALANCE/FFE结合技术扫描时间短,为8～16s。实质性器官及血管结构清晰,边缘平滑,解剖层次分明。BALANCE无论有无流动的液体均为高信号,能清晰显示病变对门静脉及肝静脉的侵犯。190个病灶中,SENSE/BALANCE/FFE图像及T2WI/TSE图像分别检出了161个(85%,161/190)和171个(90%,171/190),前者略低,但两者间没有显著性差异(χ2=2.3845,P>0.05)。测量SENSE/BALANCE/FFE图像53个实性病灶信号为549.6434±44.56,20个血管瘤信号为1053.6385±55.20,53个肝囊肿信号为1918.1715±122.08,各种肿瘤间有显著差异(P<0.01)。结论SENSE/BALANCE/FFE序列省时且实用性强,适合于肝脏病变的诊断。

Objective To evaluate efficacy of SENCE/BALANCE/FFE in diagnosing liver tumors. Methods 104 patients with liver neoplasm （190 lesions） underwent SENCE/BALANCE/FFE technique and relevant images were compared with those obtained with respiration-gated fat-selective suppression T2WI （TSE/T2WI/SPIR）. Results SENCE/BALANCE/FFE had a shorter scan time 8-16 seconds, and clearly displayed parenchymatous organs and vessels, presenting smooth edge and sharp demarcation in anatomy. The liquids were of high intensity no matter whether they were flowing or not, clearly displaying invasion of lesion to hepatic vein or portal vein. Out of 190 lesions, SENCE/BALANCE/FFE detected 161 （85%） and T2WI/TSE identified 171 （90%）, respectively. The former is a little less but no significant difference was found （X^2=2.3845, P〉0.05）. On images collected by SENCE/BALANCE/FFE, 5 parenchymatous lesions had intensity 549.6434±44.56, 20 haemangiomas had intensity 1053.6385±55.20, 53 hepatic cysts had intensity 1918.1715±122.08, varying significantly （P〈0.01）. Conclusion SENCE/BALANCE/FFE saves time and is very suitable for diagnosing hepatic lesions.