Accession Number : AD1050433


Title :   Noninvasive Optical Monitoring of Spinal Cord Hemodynamics and Oxygenation after Acute Spinal Cord Injury


Descriptive Note : Technical Report,01 Sep 2016,31 Aug 2017


Corporate Author : University of British Columbia Vancouver, BC Canada


Personal Author(s) : Kwon, Brian K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1050433.pdf


Report Date : 01 Sep 2017


Pagination or Media Count : 35


Abstract : Our objectives in Year 1 are fully addressed. Simultaneous to obtaining institutional (UBC) and ACURO approvals, a comprehensive assessment on current NIRS technology advancements related to tissue hemodynamics monitoring was performed. That study helped us to design and develop our first NIRS system (V1) required for monitoring spinal cord oxygenation and perfusion in our animal model of Experiment 1. We also identified available standard NIRS systems that were required to examine function and calibration of the V1 sensor. To monitor spinal cord cytochrome c redox state (CCR), we designed a NIRS system prototype (OXT5) that uses a novel multiwavelength hardware and algorithm. Intellectual Property (IP) protection of our developed systems and algorithms were initially assessed through UBC University Industrial Liaison Office (UILO). We will follow up our UILO IP application after completion of Experiment 1. A pilot animal study with five pigs was conducted during the Y1-Q3 period to evaluate our NIRS sensors prototypes. The pilot study helped us to modify the protocol of Experiment 1 and refine some technical aspects of V1 and OXT5 NIRS sensors. We then started Experiment 1 as scheduled in Y1-Q4. Four animals are studied so far, and data collection and comparative analysis are under process. In year two we will complete Experiment 1 and focus on refining the technology to engineer a sensor that can be used in Experiment 2, a pig study with a seven-day post-injury survival period.


Descriptors :   monitoring , spinal injuries , spinal cord , prototypes , algorithms , Infrared Spectroscopy


Subject Categories : Medicine and Medical Research
      Anatomy and Physiology
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE