Non-Invasive Monitoring of Vital Signs and Traumatic Brain Injuries

Surveillance non invasive des signes vitaux et des traumatismes cérébraux

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Authors
  1. Stergiopoulos, S.
  2. Friebert, A.
  3. Zhang, F.J.
  4. Hatzinakos, D.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Toronto Univ, Toronto ONT (CAN)
Abstract
This report describes signal processing structures, in the field of non-invasive vital signs diagnostic applications, that consist of adaptive noise cancellation techniques combined with FIR filters, pattern recognition algorithms, correlation functions and time delay estimation techniques using FFT implementation. The relevant system concepts, that can be derived from the discussion of this report, can address most of the medical requirements for non-invasive monitoring of vital signs in hospital emergency departments, ambulances, hospital intensive & after care, home care and applications for family medical clinics, insurances, old-age nursing homes and far-forward operations of interest for the Canadian Forces. Reference [23] has already introduced the signal processing structures of advanced 3D medical imaging modalities such as 3D ultrasound. In this report we will focus on the challenging signal processing problems in monitoring blood pressure, non-visible brain traumatic injuries and other brain abnormalities. The system technologies for monitoring the remaining vitals signs (i.e. EEG, ECG, core temperature, pulse oxymeter) have reached already a mature state of development and their signal processing structures are simple and therefore, are beyond the scope of this report.

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Keywords
adaptive interference cancellation (AIC);auscultatory method;automated blood pressure systems;band pass filtering;blood pressure;blood pressure estimator;Brain herniation;bulk modulus;cerebral edema;computer architecture;CW pulse;diastolic blood pressure;Direct Digital Synthesizer (DDS);dispersive properties;dispersive ultrasound;Digital Signal Processor (DSP);FFT;frequency modulated (FM);graphic interface;hemorrhagic strokes;hypoxia;intracranial density;intracerebral hemorrhage;intracranial pressure (ICP);ischemia;ischemic strokes;Korotkoff sounds;meningitis;non-invasive blood pressure monitoring;non-invasive modalities for ICP;monitoring;oscillometric technique;phase fluctuations;phase wrapping;pulse rate estimator;signal acquisition;stethoscope;systolic blood pressure
Report Number
DRDC-TORONTO-TR-2008-105 — Technical Report
Date of publication
01 Jul 2008
Number of Pages
60
DSTKIM No
CA032237
CANDIS No
531379
Format(s):
Electronic Document(PDF)

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