Chinese Journal Of Clinical Anatomy ›› 2012, Vol. 30 ›› Issue (2): 176-180.

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MRI study of deep cerebral veins after subarachniod hemorrhage in rabbits

DAI Zong-fei1, DENG Xue-fei1, ZHANG Zi-xuan1, ZHU You-zhi2, ZHANG Yu2, LI Da-sheng2, LUO Xiang-wei2, MO Zi2, HAN Hui1   

  1. 1.Department of Human Anatomy, Anhui Medical University, Hefei 230032, China; 2.The 105th Hospital of People's Liberation Army, Hefei 230031, China 
  • Received:2011-09-13 Online:2012-03-25 Published:2012-04-17

Abstract:

Objective To build a model of subarachnoid hemorrhage (SAH) in rabbit and observe the changes of diameters of the deep cerebral veins after SAH, in order to provide a new theoretical basis for the occurrence and therapy of vasospasm after SAH. Methods A total of 38 New Zealand rabbits were randomly divided into two groups: normal saline (NS) group (n=5), and SAH group (n=33). The SAH animals were made by infusing autologous arterial blood into the cisterna magna twice, and the NS group had saline instead of blood. The behavior and neurological function of animals in SAH group (4 rabbits) and in NS group (2 rabbits) were observed. Another 14 SAH rabbits were sacrificed and observed by microscopic anatomy. MR scan was performed 1 day before making model and 5 days after making model again in other rabbits.    Results     Microscopic anatomy showed that coagulated blood was obviously found around the ventral surface of brain stem, lateral ventricles and quadrigeminal cistern. In NS group, no statistical difference was found (P>0.05) among the diameters of internal cerebral vein (ICV), basilar vein (BV) and great cerebral vein (GV) before and after making model. In SAH group, the diameters of ICV, BV, GV were separately (0.57±0.13)mm, (0.38±0.08)mm, (1.33±0.31)mm before making model. However, the diameters of them were (0.42±0.08)mm, (0.25±0.12)mm, and (1.26±0.31)mm at 5 days after making model, which were significantly different compared to that at 0 day.   Conclusions    Various vasospasm of deep cerebral veins after SAH will be developed.

Key words: Subarachnoid hemorrhage, Cerebral vasospasm, Deep cerebral veins, Magenatic resonance imaging

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