skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for noninvasive intracranial pressure measurement

Abstract

An ultrasonic-based method for continuous, noninvasive intracranial pressure (ICP) measurement and monitoring is described. The stress level in the skull bone is affected by pressure. This also changes the interfacial conditions between the dura matter and the skull bone. Standing waves may be set up in the skull bone and the layers in contact with the bone. At specific frequencies, there are resonance peaks in the response of the skull which can be readily detected by sweeping the excitation frequency on an excitation transducer in contact with a subject's head, while monitoring the standing wave characteristics from the signal received on a second, receiving transducer similarly in contact with the subject's head. At a chosen frequency, the phase difference between the excitation signal and the received signal can be determined. This difference can be related to the intracranial pressure and changes therein.

Inventors:
 [1]
  1. (Los Alamos, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
873233
Patent Number(s):
6117089
Assignee:
Regents of University of California (Los Alamos, NM) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; noninvasive; intracranial; pressure; measurement; ultrasonic-based; continuous; icp; monitoring; described; stress; level; skull; bone; affected; changes; interfacial; conditions; dura; matter; standing; waves; set; layers; contact; specific; frequencies; resonance; peaks; response; readily; detected; sweeping; excitation; frequency; transducer; subject; head; wave; characteristics; signal; received; receiving; similarly; chosen; phase; difference; determined; related; therein; readily detected; received signal; pressure measurement; excitation frequency; phase difference; standing wave; excitation signal; resonance peaks; intracranial pressure; changes therein; receiving transducer; signal received; stress level; noninvasive intracranial; resonance peak; based method; /600/

Citation Formats

Sinha, Dipen N. Method for noninvasive intracranial pressure measurement. United States: N. p., 2000. Web.
Sinha, Dipen N. Method for noninvasive intracranial pressure measurement. United States.
Sinha, Dipen N. Sat . "Method for noninvasive intracranial pressure measurement". United States. https://www.osti.gov/servlets/purl/873233.
@article{osti_873233,
title = {Method for noninvasive intracranial pressure measurement},
author = {Sinha, Dipen N.},
abstractNote = {An ultrasonic-based method for continuous, noninvasive intracranial pressure (ICP) measurement and monitoring is described. The stress level in the skull bone is affected by pressure. This also changes the interfacial conditions between the dura matter and the skull bone. Standing waves may be set up in the skull bone and the layers in contact with the bone. At specific frequencies, there are resonance peaks in the response of the skull which can be readily detected by sweeping the excitation frequency on an excitation transducer in contact with a subject's head, while monitoring the standing wave characteristics from the signal received on a second, receiving transducer similarly in contact with the subject's head. At a chosen frequency, the phase difference between the excitation signal and the received signal can be determined. This difference can be related to the intracranial pressure and changes therein.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

Save / Share: