Abstract:

Objective  To observe morphological features of human brain bridging veins by MRI and to find its normal value limitation (95% confidence interval).Methods  2D-TOF MR venography was used to scan and acquire original bridging vein images of adults without intracranial diseases. Then these original images were post-processed with maximum intensity projection (MIP). Normal value limitation (95% confidence interval) of human brain bridging veins under physiological functions was analyzed using the Syngo fast-view image manipulation system.  Results  Mean±SD of this part of the vessel′ diameter was (3.58±0.39)mm and (3.29±0.37)mm, and the 95%confidence interval of this part of vessel′ diameter was (3.48±0.39)mm and (3.22±0.26)mm.  Diameter of the front lobe was the smallest. In men, the range ofthis part of the vessel′ diameter was bigger than in women. Conclusion  Human brain bridging veins can be clearly imaged by 2D-TOF MR venography. This part of the vein possesses obviously different morphological features such as arrangement mode, vessel orientation, bulb of brain bridging veins and weak or disappearing MRI signals. Normal value limitation foundation of the final pathway- brain bridging veins will provide a valuable morphological theoretical basis.

Key words: Human; brain bridging veins;Magnetic resonance imaging; Time of flight; Maximum intensity projection