Simultaneous imaging of cortical blood flow and haemoglobin concentration with LASCA and RGB reflectometry

Adv Exp Med Biol. 2013:789:427-433. doi: 10.1007/978-1-4614-7411-1_57.

Abstract

We demonstrate a system for the simultaneous imaging of cortical blood flow and haemoglobin oxygenation by laser speckle contrast analysis (LASCA) and RGB reflectometry. The sensitivity of the system was tested by observing changes of haemoglobin oxygenation and blood flow in rats in response to ischaemic stroke, hypercapnia, hyperoxia, hypoxia, cortical spreading depression and cortical activation following forepaw stimulation.

MeSH terms

  • Animals
  • Cerebral Cortex / blood supply*
  • Cerebrovascular Circulation / physiology*
  • Cortical Spreading Depression / physiology
  • Diagnostic Imaging / methods
  • Hemoglobins / metabolism*
  • Hypercapnia / metabolism
  • Hypercapnia / physiopathology
  • Hyperoxia / metabolism
  • Hyperoxia / physiopathology
  • Lasers
  • Oxygen / metabolism
  • Rats
  • Stroke / metabolism
  • Stroke / physiopathology

Substances

  • Hemoglobins
  • Oxygen