Weinreb J C, Cohen J M, Armstrong E, Smith T
AJR Am J Roentgenol. 1986 Oct;147(4):785-90. doi: 10.2214/ajr.147.4.785.
The livers of 27 children, 2 weeks to 16 years old, were examined with MRI and CT. Fourteen children had normal livers, 9 had focal liver disease, and 4 had diffuse liver disease. Normal intrahepatic venous anatomy was visualized more frequently with MRI than with CT, regardless of presence of disease, type of disease, or age. Focal hepatic lesions were either iso- or hypointense on relatively T1-weighted images and were hyperintense on T2-weighted images regardless of the pathology. In three cases, lesions seen with MRI were not detected with CT. In two other cases, CT was interpreted as equivocal or abnormal, but the liver was normal on MRI. MRI was superior to CT for evaluation of patency of the intrahepatic portion of the inferior vena cava. Other than in cases of fatty infiltration, CT provided no information additional to MRI. MRI has the potential to replace CT as a technique for imaging the pediatric liver in many cases, especially for infants and young children.
对27名年龄在2周龄至16岁的儿童肝脏进行了MRI和CT检查。14名儿童肝脏正常，9名有局灶性肝病，4名有弥漫性肝病。无论疾病的存在、疾病类型或年龄如何，MRI比CT更常显示正常的肝内静脉解剖结构。无论病理情况如何，局灶性肝病变在相对T1加权图像上呈等密度或低密度，在T2加权图像上呈高密度。3例中，MRI显示的病变CT未检测到。另外2例中，CT解释为可疑或异常，但MRI显示肝脏正常。MRI在评估下腔静脉肝内段通畅性方面优于CT。除脂肪浸润病例外，CT未提供比MRI更多的信息。在许多情况下，尤其是对婴幼儿，MRI有潜力取代CT作为儿科肝脏成像技术。
