ABSTRACT
Objective:To elucidate the changes in apparent diffusion coefficients(ADC)by quantify diffusion weighted (DW)magnetic resonance imaging(MRI)in patients with Alzbeimer's disease(AD),and the relationship between micro-structure changes of white matter(WM)and the cognitive impairment thereof.Methods:The DW-MRI was performed in 30 probable AD patients and 30 normal controls with normal-appearing white matter(NAWM).The ADC was measured in different WM areas.The neurologic and neuropsychological assessments were examined with mini-mental state examination(MMSE)in patients.The ADC were determined in standard regions of the frontal,temporal,occipital and parietal white matter,genu,splenium of the corpus callosum.Results:The value of ADC was higher in frontal,splenium corpus callosum,temporal,and parietal white matter of AD group than that of control(P ＜ 0.01).There was no significant difference in the ADC value of genu and occipital white matter between AD and control groups(P＞ 0.05).The score of MMSE was 24.1±0.8 in AD group.The ADC values of parietal,splenium of the corpus callosum and frontal white matter were significantly negatively correlated with MMSE scores in AD group(P ＜ 0.05 or P ＜ 0.01).There was no correlation between the ADC values of genu of the corpus eallosum,temporal and occipital white matter with the MMSE score(P ＞ 0.05).Conclusion:The quantitative DWI analysis of MRI DWI may be helpful in assessing WM abnormalities in AD.The parietal WM abnormalities may play an important role in the development of dementia.It was showed that Alzheimer's cognitive decline with ADC value and micro-structure of white matter was closely related.
ABSTRACT
Objective To understand the influene of inhabited environment on psychological and be-havioral symptom of dementia (BPSD) in patients with Alzbeimer's disease. Methods Nenrepsychiatric in-ventory was used to measure the occurrence of BPSD of 100 home and 100 resthome patients with Alzheimer's disease.Tbe data were analyzed with software SPSS version 13.0. Results The scores of hallucinations, anxi-ety,aberrant motor behavior and sleep disturbance in resthome patients were significant higher than those of home patients.There was significantly difference in the extent of occurrence in aberrant motor behavior, apathy/ indifference, hallucinations, sleep disturbance, anxiety,depression/dysphoria and appetite/eating disorders be-tween home and resthome patients,among which the extent of occurrence in resthome patients was higher except for body weight decreasing and appetite/eating disoniers. Conclusions The occurrence of BPSD is different according to different inhabited environment, symptoms of resthome patients are worse, so families should be ap-pealed as far as possibile to allow AD patients living at home.