Application of diffusion tensor imaging in the neurodevelopmental evaluation of premature cerebral white matter damage / 国际儿科学杂志

Cerebral white matter damage is the most common form of brain injury in premature infants,which is the main cause of neurological and mental injury and cerebral palsy.Imaging examination plays an important role in the diagnosis and follow-up of white matter damage.Because of the safe and accurate characteristics,nuclear magnetic resonance has become the most common imagine form.Different from the traditional nuclear magnetic resonance technique,diffusion tensor imaging (DTI) can get quantitative analysis of cerebral white matter fiber bundle in vivo.This technology has become a powerful tool for the evaluation of white matter damage.The article summarizes the application of DTI in the neurodevelopmental evaluation of cerebral white matter damage in premature infants.

Research on diffusion tensor imaging and magnetic resonance spectroscopy imaging of brain white matter damage in hypoxic-ischemic encephalopathy of prematurity / 中国医学装备

76 premature babies stayed in NICU of Taian City Central Hospital from January, 2012 to December, 2012 whose gestational age is from 31 week to 35 week. The babies were scanned with MRI, DTI and MRS. According to the statistics of Brain White Matter Damage Based on MRI those babies are divided into case group and control group which has 38 babies respectively. 38 full-term infants, who don’t have history of perinatal asphyxia, whose MRI is normal, are taken as control group. The ADC value and FA value in different ROIs and different metabolite peak ratios in two groups are tested with DTI and MRS respectively.Results: 1.With the growth of gestational age the ADC value decreases while the FA value increase gradually. 2.With the deterioration of white matter damage the values of Cho, Lac, Cho/Cr, Cho/NAA rise while the values of NAA, NAA/Cho, NAA/Cr fall.Conclusion: Cerebral white matter damage can severely influence the changes of brain inner water molecular diffusion and anisotropy and metabolin. By uniting the DTI and MRS these two technologies together, people can diagnose cerebral white matter damage and white matter damage in the early period.

Changes of IL-8 and ICAM-1 in early stage of cerebral white matter damage and their correlations with prognosis in premature infants / 临床儿科杂志

Objective To explore the IL-8 and ICAM-1 in premature infants with cerebral white matter damage (CWMD) and their correlations with prognosis. Methods One hundred and two cases of CWMD were selected from March 2009 to June 2012 as experimental group and 42 cases of normal preterm children were selected as control group. Serum IL-8 and ICAM-1 levels were measured during 48-72 h after birth. Motor development index (psychomotor developmental index, PDI) and mental development index (mental development index, MDI) were evaluated by Bayley scale. The correlations of IL-8 and ICAM-1 levels with prognosis were analyzed. Results Serum IL-8 and ICAM-1 levels in the experimental group were signiifcantly higher than those in the control group (P<0.05). MDI and PDI scores in the experimental group were signiifcantly lower than those in the control group (P<0.05). There were negative correlations of serum IL-8 and ICAM-1 levels with MDI (r=-0.64, P<0.05;r=-0.66, P<0.05)+and PDI (r=-0.70, P<0.05;r=-0.71, P<0.05). Conclusions Serum IL-8 and ICAM-1 levels in infants with CWMD are signiifcantly increased, and are negatively correlated with MDI and PDI scores.