摘要
目的评价三种不同快速T_2WI技术图像质量及对腹腔解剖的显示情况及对疾病诊断的准确性。方法复习经手术或临床证实的93例腹腔内病变患者在TSE T_2WI、True FISP T_2WI、HASTE T_2WI上表现,比较不同成像技术图像质量(包括病灶与正常组织的对比信噪比、解剖结构显示)及病变检出率。结果TSE序列有较多伪影,病变检出率略低,但三者间没有显著性差异(P>0.05),True FISP及HASTE序列对含水病灶高度敏感,但对小的实质性病变的分辨率低于TSE,True FISP解剖结构显示良好,各脏器边界、腹腔内间隙及血管显示清楚,图像没有明显的呼吸运动伪影,但腹腔两侧、靠近肠道及隔肌下肝脏区域常可见圆形低信号或混杂信号伪影,HASTE图像呈毛玻璃状,无伪影,图像对比度及分辨率稍低。结论True FISP对于解剖结构显示、病变定位及观察病变对邻近组织的侵犯较为优越,TSE具有较高的分辨率,但常有明显的伪影影响病变检出率,根据患者不同情况应用TSE或HASTE可获得较高的定性及定位诊断率。
Objectve To evaluate the value of imaging of turbo spin echo, true fast imaging with steady - state precession and half- Fourier acquisition shot turbo SE, and The manifestation of abdominal in 93 - patients diseases proven by surgical operation and siqnsand symproms in TSE T2WI、 True FISP T2WI and HASTE T2WI was reviewed, compared in terms of pictures quality including contreast - noise ration, signalnoise ratio and of lesion detectable rate. Results There were much more artifacts in TSE imaging with little lower detechable rate, but there were no significald fifference among three mothds (P> 0.05) .True FISP and HASTE were keenness for water.Conclusion True FISP has excellent demonstration of abdominal framework and lesion detection. TSE has good SNR, but with more artifacts. TSE or True FISP Has higher aualitativre and locative diognostic ration depending on different patients.
出处
《医学研究通讯》
2002年第10期38-41,共4页
Bulletin of Medical Research
