Preliminary study on change trends of apparent diffusion coefficient under different b values of diffusion-weighted imaging in acute cerebral infarction
10.3969/j.issn.1671-8348.2016.20.012
- VernacularTitle:弥散加权成像不同b值对急性脑梗死ADC变化趋势的分析
- Author:
He REN
;
Xiuting MEI
;
Peihua ZHOU
- Publication Type:Journal Article
- Keywords:
brain infarction;
diffusion magnetic resonance imaging;
b-value;
ADC
- From:
Chongqing Medicine
2016;45(20):2775-2776,2779
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the change trends of apparent diffusion coefficient (ADC) values under different b values of diffusion‐weighted imaging(DWI) in acute cerebral infarction .Methods The patients with acute celebral infarction were selected as the experimental group and the normal volunteers as the control group .The 5 different diffusion gradients were used ,including b=200 s/mm2 ,b=400 s/mm2 ,b=600 s/mm2 ,b=800 s/mm2 and b=1 000 s/mm2 .The two pairs of 20 cases of acute cerebral in‐farction and 20 healthy volunteers were performed the DWI scanning for detecting the ADC value under different b values .The ADC values in the two groups were statistically analyzed by using one‐way anova .Results In 5 different b values ,the ADC values in the case group was 0 .64 ,0 .59 ,0 .55 ,0 .47 and 0 .41 respectively ,which in the control group were 1 .04 ,0 .99 ,0 .92 ,0 .85 and 0 .78 re‐spectively ,the differences between the two groups were statistically significant ,moreover with the b value increase ,the ADC value had a decreasing trend(P< 0 .01) .Conclusion The ADC value in the patients with acute cerebral infarction is significantly de‐creased ,the ADC values are different under different b values of DWI ,moreover which shows the significantly negative correlation trend .
