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Nine adult beagle dogs underwent magnetic resonance imaging in a 2-Tesla small-bore unit. Six surviving dogs were followed up serially with magnetic resonance imaging after induction of hydrocephalus by injection of Silastic into the prepontine cistern or fourth ventricle. Ventricular size (Y) measured as percentage cross-sectional area of an anterior(More)
OBJECTIVE To quantify elements of spinal manipulation therapy performance and to test the strategy of combined rehearsal and quantitative feedback as a means of enhancing student skill development for cervical and thoracic manipulative procedures. DESIGN Randomized, controlled study. SETTING Chiropractic college. SUBJECTS Thirty-nine chiropractic(More)
Twenty rabbits were intrathecally perfused with horseradish peroxidase (HRP) without increasing the cerebrospinal fluid (CSF) pressure. Histologic and ultrastructural studies of the olfactory nerve and nasal mucosa showed HRP along the space between peri- and epineurium down to the smaller nerve branches in the mucosa. Within the mucosa, HRP leaked out from(More)
The mechanisms of CSF formation and absorption have been reviewed. The conditions that alter the rate of CSF formation and absorption may change the concentration of contrast in the cranial cisterns and the rate of passage through the cisterns. The significance of these alterations in relation to the complications of myelography with water-soluble contrast(More)