在急性、亚急性重型肝炎 (日本称做“剧症肝炎”)的病情监视、疗效判定和预后估测上 ,影像诊断非常重要而实用。有些影像改变表现可先行显示于临床所见和检验之前 ,故对治疗能起到指导作用。在临床实践中 ,由于ＣＴ和ＭＲＩ不宜反复多次应用 ,而超声检查则具有独特的实用价值。 Imaging diagnosis is very important and practical in the surveillance of disease, judgment of curative effect, and estimation of prognosis of acute and subacute severe hepatitis (referred to as “acute hepatitis” in Japan). Some of the image changes in performance can be displayed prior to clinical findings and testing, so the treatment can play a guiding role. In clinical practice, because CT and MRI should not be repeated multiple applications, and ultrasound has a unique practical value.