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:
-
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 873233
- Patent Number(s):
- 6117089
- Assignee:
- Regents of University of California (Los Alamos, NM)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
- 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}
}