Abstract
The problem of the acoustic properties of the skull were studied by White and co-workers (1967, 1978). The skull consists of three layers of bone influencing the ultrasound in different manners. The middle layer (diploe), has the most important effect on the attenuation and scattering of the ultrasound, especially when the bony spicules have a diameter comparable to the wave length. However, these spicules are absent in the temporal region where the skull is at its thinnest. The outer and inner table of ivory bone are important for refraction. The inner table follows the windings of the brain. This curvature will act as a lens and refraction can also be induced by these variations of thickness.
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References
White DN Clark JM, White MN (1967) Studies in ultrasonic echoencephalography. General principles of recording information in ultrasonic B- and C-scanning and the effects of scatter reflection and refraction by cadaver skull. Med and Biol Engrng 5: 3–14.
White DN, Curry GR, Stevenson RJ (1978) The acoustic characteristics of the skull. Ultrasound Med Biol. 4: 225–252.
Fry FJ, Barger JE (1978) Acoustical properties of the human skull. Acoust Soc Am 63: 1576–1590
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© 1986 Springer-Verlag/Wien
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Grolimund, P. (1986). Transmission of Ultrasound Through the Temporal Bone. In: Aaslid, R. (eds) Transcranial Doppler Sonography. Springer, Vienna. https://doi.org/10.1007/978-3-7091-8864-4_2
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DOI: https://doi.org/10.1007/978-3-7091-8864-4_2
Publisher Name: Springer, Vienna
Print ISBN: 978-3-211-81935-7
Online ISBN: 978-3-7091-8864-4
eBook Packages: Springer Book Archive