Objective

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A new occipital bone removal technology was applied to improve the success rate of brain removal.

Methods

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The skull was sawed based on the traditional brain removal technology，and part of the occipital bone was removed downward centered in external occipital protuberance to the foramen magnum，then exposed the telencephalon，cerebellum and posterior medulla oblongata. After that，removed the tentorium cerebelli and cut down the medulla oblongata and the related cranial nerves at the skull base，then removed the brain tissues.

Results

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The removed brain tissues had structurally intact telencephalon，cerebellum and brain stem，clear vessels in the cerebral sulci，and relatively intact optic chiasm，olfactory tracts and vertebro-basilar arteries.

Conclusion

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Brain removal through a fenestration on the external occipital protuberance can effectively preserve the integrity of brain specimens，and improve the success rate of brain removal，which is of great significance for central nervous system teaching and improvement of human brain tissue repositories.