McArdle C B, Richardson C J, Hayden C K, Nicholas D A, Amparo E G
Radiology. 1987 May;163(2):395-403. doi: 10.1148/radiology.163.2.3550882.
Eighty-five infants, 82 of whom were 29-44 weeks postconceptional age, were imaged with a 0.6-T magnet. Eight infants had cerebral infarction. In premature neonates with very water, low-intensity white matter on T1-weighted images, ultrasound was better than both computed tomography and magnetic resonance (MR) imaging in depicting parenchymal changes of infarction or edema. However, after 37 weeks gestation, MR imaging was superior. Cerebral atrophy, present in seven infants, was consistent with subarachnoid space widths of 7 mm or more, or subarachnoid space widths of 5-6 mm with ventricular/brain ratios of 0.36 or greater. Delayed myelination was seen in a total of 18 infants with histories of hypoxic-ischemic insult. MR imaging shows promise in the neonatal period. It facilitates recognition of infarcts in full-term infants and may be used to predict abnormal neurologic outcome in infants who have initial delayed myelination.
85名婴儿接受了0.6-T磁共振成像检查，其中82名婴儿的孕龄为29至44周。8名婴儿患有脑梗死。在孕龄极小、T1加权图像上白质呈低信号的早产儿中，超声在显示梗死或水肿的实质变化方面优于计算机断层扫描和磁共振成像。然而，孕37周后，磁共振成像更具优势。7名婴儿出现脑萎缩，这与蛛网膜下腔宽度达7毫米或以上，或蛛网膜下腔宽度为5至6毫米且脑室/脑比率为0.36或更高相符。共有18名有缺氧缺血性损伤病史的婴儿出现髓鞘形成延迟。磁共振成像在新生儿期显示出前景。它有助于识别足月儿的梗死灶，并可用于预测最初有髓鞘形成延迟的婴儿的异常神经学结局。
