The application of diffusion weighted imaging and apparent diffusion coefficients mapping in monitoring the development of cerebral infarction
- VernacularTitle:MR表观扩散系数图在脑梗死演变诊断中的价值
- Author:
Li HUANG
;
Xiuhe WANG
;
Sirun LIU
;
Yaoxiong HUANG
- Publication Type:Journal Article
- Keywords:
Brain infarction;
Magnetic resonance imaging;
Diffusion;
Evaluations studies
- From:
Chinese Journal of Radiology
2001;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the roles of isotropic diffusion weighted imaging and apparent diffusion coefficients (ADC) mapping in diagnosing cerebral infarction, monitoring the development of cerebral infarction and defining the infarction stages.Methods 86 work-ups in 70 patients with cerebral infarction (8 hyperacute, 13 acute, 32 subacute, 11 steady, and 22 chronic) were imaged with both conventional MRI and single-shot echo-planar isotropic diffusion weighted imaging.The change of the infarct lesion in DWI and T_2WI was also analyzed.The average ADC, relative ADC (rADC), and the ADC from center to periphery of the lesion were calculated.Results 8 hyperacute cerebral ischemic regions were revealed at DWI and ADC mapping.Hyperacute and acute infarcts appeared as areas of hyperintensity on DWI, and their average ADC was significantly depressed compared with that of homologous contralateral tissue [(0.698?0.104) ?10 -3 mm 2/s versus (0.990?0.161)?10 -3 mm 2/s; t=-14.372, P
