In this paper, wave propagation in head generated by a local axisymmetric impact on its outer surface is studied. The skull material is treated as isotropic and homogeneous, but presence of the cerebrospinal fluid (considered as a compressible but inviscid irrotational fluid) inside the cranium has...
In normal adults, the CSF volume is 90 to 200 mL [1]; approximately 20 percent of the CSF is contained in the ventricles; the rest is contained in the subarachnoid space in the cranium and spinal cord. The normal rate of CSF production isapproximately 20 mL per hour. What cell makes C...
Fluid pressure may be increased by a brain tumor or by hemorrhage or infection in the cranium. hydrocephalus, or excess fluid in the cranial cavity, can result from either excessive formation or poor absorption of cerebrospinal fluid. Blockage of the flow of fluid in the spinal canal may ...
Also in subject areas: Medicine and Dentistry Pharmacology, Toxicology and Pharmaceutical ScienceDiscover other topics On this page Chapters and Articles Related Terms Chapters and Articles You might find these chapters and articles relevant to this topic. Distraction Osteogenesis of the Cranium Fernando ...
The context 1.1 Introduction 1.2 The anatomy and terminology 1.3 Functions of the fluids 1.4 Composition of fluids 1.5 Anatomical basis of barriers and routes of fluid transfer 2. Basic principles of fluid movements in the brain and lessons from studies on peripheral tissues ...
A major pathway by which cerebrospinal fluid (CSF) is removed from the cranium is transport through the cribriform plate in association with the olfactory nerves. CSF is then absorbed into lymphatics located in the submucosa of the olfactory epithelium (olfactory turbinates). In an attempt to pro...
The prevailing view is that lymphatic vessels external to the cranium receive a large volume of CSF in many mammals (Fig. 10); however, humans have yet to be evaluated in vivo. This new emphasis on drainage via the olfactory route [265–272], rather than by arachnoid villi, culminates a...
the blood of the superior sagittal sinus (Fig.1) [13]. Studies conducted in multiple animal species also point to lymphatic drainage of CSF in which CSF exits the cranium through the cribriform plate and spinal canal to reach the cervical and spinal lymph nodes [14,15,16,17,18]. While ...
about 0.75 ml of fluid from the cranium moves down into the spinal canal during systole and returns to the head in diastole. During this to-and-fro movement, mixing would occur and the kinetics of distribution of the tracer would be of the diffusional type and with a very high coefficient...
Total CSF volume was estimated based on the difference between endocranial and brain volumes.ResultsAutomatic segmentation of the endocranium was possible in 75 CT scans. Semi-automatic brain and CSF volume evaluations were performed in 40 CT scans of infants with PSD (18 = occipital plagioceph...