ABSTRACT
Objective To observe clinical significance、anatomy and variation of normal internal cerebral veins and their tributa-ries.Methods The studies included 284 sides in 142 patients.The patients were performed with 320-detector Row CT One-stop Scanning.Then,the anatomical features of internal cerebral veins and their tributaries were evaluated.Results The detection rate of internal cerebral veins(ICA)、thalamostriate veins(TSV)、septal veins(SV)、anterior caudate nucleus veins、posterior caudate nucleus veins and lateral direct veins was 100%、100%、98.9%、95.4%、93.7%、48.6%.Type of IA was seen frequently in four types of ICA,the parts of ICV and their tributaries were mirror symmetry,the majorities of ICA were located the same plane.Anterior cau-date nucleus veins were classified four types on basis of these different draining patterns,they were drained to TSV commonly.There was no significant difference between venous angle or false venous angle and type of their draining(P>0.05).There was significant difference between detection rate of lateral direct veins and development of posterior caudate nucleus veins(P<0.05).Conclusion 320-detector Row CT One-stop Scanning was an important method that internal cerebral veins were detected effectively and non-inva-sively,observed anatomy,course and morphological change of ICV.
ABSTRACT
Objective To study the value of diffusion weighted imaging (DWI)in Marchiafava-Bignami disease.Methods (1)12 cases of Marchiafava-Bignami disease (MBD)patients with 6 month follow-up and 12 hedthy adults were clone MRI DWI;(2)MR imaging characteristics of 12 patients were observed on the corpus callosum and the other gray-white matters;(3)The ADC values of the central part and marginal area of the corpus callosum and the other gray-white matters were measured,data analysis were carried out completely by random design.Results Hyperintensity on the corpus callosum were showed in 12 patients on DWI,typical“sandwich sign”was seen on the sagittal T2 WI in 1 1 cases,and gray-white matters beside the corpus callosum were involved other in 6 cases;The ADC values of central and marginal area of the corpus callosum and the other gray-white matters had significant differ-ence between the improved clinical symptom group and,unimproved clinical symptom group and the control group (P < 0.05 ). There were no significant differences in the ADC values for the other white matters.Conclusion DWI can be used to reflect the change of MBD.Low ADC values in the corpus callosum and cortex are associated with a poor prognosis.