J.Jpn. Surg. Soc.. 61(3): 359-369, 1960

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EXPERIMENTAL STUDY ON MEASUREMENT IN REGARD TO HEMODYNAMICS OF GALEN'S VEIN

The brain has the most important function for the animal to maintain their life, and the blood circulation of the brain has to be stable for the smooth functioning of the brain. Various methods for determination of cerebral blood flow, therefore, have hitherto been reported by many authors, and they have been applied for the experimental or clinical purpose, However, those methods are for determination of total blood flow, while there are few reports on determination of blood flow in particular areas of the brain.
A new procedure for continuous determination of the blood flow of the brain stem and the fronto-pariental region were invented using polyethylen tube which is inserted into the Galen's vein as well as into the superior sagittal sinus and at the same time respiration, blood pressure and venous pressure are investigated for the experimental study.
Draining areas of the Galen's vein are those of anatomically vital centers including the subcortical nuclei, lateral walls of the lateral ventricles and of the third ventricle, the midbrain and a part of the rhirencephalon as shown by Evans blue injected through the polyethylene tube inserted into the Galen's vein.
Hemodynamic study of the Galen's vein showed that decrease of the blood flow induced by bleeding is parallel to the changes of respiration and reflexe . This reveals the draining areas of the Galen's vein contain physiologically important areas for principal function of life.
By this method, the vertebral artery is found to play more important role in the brain circulation than the internal and external carotid arteries. Those arteries were found to have multiple anastomoses.
(Author's abstract)

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