Objective To evaluate the value of medical imaging technology in qualitative and quantitative diagnosis of liver steatosis. Methods To describe the current status and advancement s of medical imaging technology such as sonography , CT and MRI in qualitative and quantitative diagnosis of liver steatosis , and to cont rast their advantages and shortages. Results Sonography could be used as the primary screening and evaluate measures in qualitative and quantitative diagnosis of liver steatosis , and CT was more reliable in quantitative diagnosis , MRI had significant improving with its high sensitivity and specificity. Conclusion Medical imaging technology has significant clinical value in qualitative and quantitative diagnosis of liver steatosis , especially with the help of functional MR imaging techniques such as spect roscopy and chemical shif t Gradient-Echo technic.
【摘要】目的探讨Fahr病的临床表现和影像学的诊断价值。方法回顾性分析1999年2008年就诊的11例经Fahr病的不同临床表现和CT、MRI及SPECT资料。结果所有患者都接受CT检查,9例MRI检查,8例SPECT扫描。CT可清晰地显示钙化病灶的大小范围；在显示钙化方面,MRI不如CT敏感,但MRI能显示病灶内和周围胶质增生、囊变与脱髓鞘的范围及程度;亦能较清晰的显示小脑齿状核的病变情况;SPECT能早期监测到双侧基底节和双侧大脑皮质的局部脑血流灌注下降程度。结论Fahr病临床表现各异,易误诊。CT、MRI和SPECT对其诊断具有协同作用。