Method and apparatus for determining the thickness of bone in vi

Details Method and apparatus for determining the thickness of bone in vi Method and apparatus for determining the thickness of bone in vi

1997-11-04

1999-06-01

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

A61B 800

Patent

active

059083883

ABSTRACT:
The thickness of bones of the skull is determined in vivo employing ultrasonic waves which are transmitted into the bone; reflected echoes of the transmitted waves are converted into electrical signals and the signals are windowed to identify a zone embracing the bone thickness; a power spectrum is developed of each electrical signal of the windowed zone; the power spectrum is differentiated to provide a plot of frequency and amplitude and the distance between adjacent peaks of the wave plot is measured from which the bone thickness can be computed.

REFERENCES:
patent: 5117835 (1992-06-01), Mick
patent: 5309898 (1994-05-01), Kaufman et al.

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