[Evaluation of white matter myelination in preterm infants using DTI and MRI].

Objective: To investigate the features of white matter myelin development in preterm infants using magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI).

Methods: A total of 31 preterm infants with a gestational age of ≤32 weeks and a birth weight of <1 500 g were enrolled. According to head MRI findings, these infants were divided into preterm group with brain injury (12 infants) and preterm group without brain injury (19 infants).

[Proton magnetic resonance spectroscopy and diffusion tensor imaging study of first-episode patients with positive symptoms of schizophrenia].

Objective: To study the changes in the frontal white matter, the head of the hippocampus, and the anterior cingulate fasciculus metabolites in first-episode patients with positive symptoms of schizophrenia.

Methods: Twenty first-episode patients with positive symptoms of schizophrenia underwent diffusion tensor imaging (DTI) and proton multi-voxel spectroscopy (1H-MRS) examination. 1H-MRS images were obtained from two sides of the frontal white matter, the head of the hippocampus and the anterior cingulate fasciculus regions.

[Brain regions for number involved in the processing of vocabulary of months in Chinese.].

The present study aimed to investigate the neuro-cognitive features in the processing of vocabularies of date in Chinese, using block-design functional magnetic resonance imaging (fMRI). Nineteen normal right-handed volunteers whose native language was Chinese performed judgments of vocabulary of month (JVM), the orientation of digit (JOD) and the meaning of words (JMW) respectively, while the fMRI data were recorded by Signa HDe 1.5T MR machine.