Cole M, Kraehenbuhl B, Richard J
J Am Geriatr Soc. 1977 Jul;25(7):314-7. doi: 10.1111/j.1532-5415.1977.tb00644.x.
At the Bel-Air Psychiatric Clinic, Geneva, Switzerland, the technique of ultrasonic Doppler flowmetry was used to examine the internal carotid arteries of 30 aged patients - 10 with cerebral degenerative dementia, 10 with cerebrovascular dementia, and 10 without dementia. An index of cerebrovascular resistance was calculated. Apparently this index can distinguish a group of vascular dementias from a group of degenerative dementias.
