[en] Objective: To explore imaging technique of magnetic resonance in cerebral vein system and to evaluate the value of magnetic resonance veinography in displaying cerebral vein and diagnosing disease. Methods: The thrity-five persons experienced examinations of 2-dimension time of flight(2D TOF), 2-dimension phase contrast(2D PC) and then 3-dimension contrast-enhancement veinography(3D-CE MRV). The raw data treated with maxi intensitive projection. The images of veinography and disease changes were analysed as so to evaluate the dependability of the three methods in playing venous structions and disease changes. Results: All the diagnoses were proved by DSA or followed up. In 25 normal persons, 2D TOF and 2D PC of 10 persons showed abnormal in different type. But the 3D-CE MRV were normal.In 10 patients suffered from vein thrombosis,that all 2D-TOF MRV, 2D-PC MRV and 3D-CE MRV showed vein abnormality followed as: up radius sinus were no appeared in 2 cases, fined in 2 cases, local cannal of up radius sinus were narrowed in 1 cases. Right traversable sinus no appeared in 2 cases, fined in 2 cases, right sigmoid sinus no appeared in 1 cases. Additionally, in one patients, the left traversal sinus showed high signal as same as normal vein sinus in 2D TOF but of contrast medium was seen in 3D-CE-MRV. 3D-CE-MRV was dependable in describing structions of vein and displaying disease changes than 2D-TOF MRV and 2D-PC MRV. Conclusion: The techniques of vein imaging of 2D-TOF MRV and 2D-PC MRV combining with 3D-CE-MRV formed imaging method of cerebral vein system and it was dependable method for showing cerebral vein struction and diagnosing throb vein sinus thrombosis. (authors)

[en] Objective: To explore the diagnostic value of MPA with a moving-bed infusion-tracking technique in lower limb arterial disease of diabetic patients. Methods: MPA of low limb artery in 21 diabetes patients were analyzed. And the results were compared with that of DSA. Results: 16 cases were excellent MR imaging and 5 were good. In 10 sections of low limb artery, 29 stenosis were displayed by MPA and 36 by DSA. The total accordance rate was 80.6% There was no statistically significant difference between MRA and DSA in the diagnosis of stenosis. Conclusion: MPA was a reliable method and non-invasive method with excellent correlation between MRA and DSA in the diagnosis of' arterial stenosis. (authors)