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目的探讨早产儿颅脑CT解剖特点。方法按样本纳入标准选择30例经多层螺旋CT低射线剂量检查的早产儿颅脑CT资料,观察早产儿颅脑形态,测量脑组织密度。结果早产儿脑皮层灰质薄,脑沟浅。脑白质密度低且范围大,其平均CT值为(14.36±1.91)HU,随胎龄增大,脑白质CT值逐渐增大。7例胎龄32周以下早产儿侧脑室体部两侧可见高密度生发层。脑室系统、脑池及脑外间隙扩大,并与胎龄有关,可见原始侧裂及存在透明隔间腔。27例早产儿硬膜窦呈高密度。结论早产儿颅脑CT表现不同于足月新生儿及儿童,有一定特殊性。
Objective To investigate the anatomic characteristics of brain CT in premature infants. Methods According to the sample inclusion criteria, CT data of 30 preterm infants with preterm infants who underwent multi-slice spiral CT scan were selected to observe the brain morphology of premature infants and the density of brain tissue was measured. Results Premature children with cortical gray matter thin, shallow groove. Low white matter density and range, the average CT value was (14.36 ± 1.91) HU, with the increase of gestational age, white matter CT value gradually increased. Seven cases of gestational age below 32 weeks in preterm children on both sides of the body can be seen on both sides of the high density of germinal layer. Ventricular system, brain pool and extrapulmonary space to expand, and with gestational age, showing the original lateral fissure and the presence of transparent compartments. 27 cases of premature children showed high density of the dural sinus. Conclusion The brain CT findings of preterm infants are different from those of full-term neonates and children.