Primary study of diffusion-weighted imaging in evaluation of fetal renal development
10.3969/j.issn.1002-1671.2016.04.023
- VernacularTitle:磁共振扩散加权成像评价胎儿肾脏功能的初步研究
- Author:
Li DING
;
Bing WU
- Publication Type:Journal Article
- Keywords:
fetus;
kidney;
magnetic resonance imaging;
diffusion-weighted imaging
- From:
Journal of Practical Radiology
2016;32(4):580-583
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the characteristics of apparent diffusion coefficient (ADC)values in the normal fetal kidney and to explore the normal data reference of fetal kidney by using diffusion-weighted imaging (DWI).Methods 71 normal kidneys of fetuses confirmed by ultrasound and MR were examined with DWI with four b values of 100 s/mm2 ,200 s/mm2 ,500 s/mm2 and 700 s/mm2 ADC values of the symmetrical ROIs were compared between left and right kidney for each b value.While ADC values between different group in ipsilateral kidney were compared between different b values.And the relationship between ADC values and gestational age was also evaluated.Results When b = 100 s/mm2 ,there was a statistically significant difference between the ADC value of left and right kidney,and the remaining group showed no statistically significant differences between the ADC values of left and right kidney.Comparisons among different b values of ipsilateral kidney showed statistically significant differences among the groups with different b values except the comparison between b=100 s/mm2 and b=700 s/mm2 groups of the right kidney with the increase of gestational weeks,the ADC values of bilateral kidneys were declining,and there was a reflection of this trend in different b values. Conclusion It is feasible for using DWI to evaluate the fetal kidney development.With a selected different b value,ADC value is a specific quantitative parameter that could help evaluating normal fetal kidney development.
