Spectral analysis of mechanical and respiratory influences on width of subarachnoid space assessed with non-invasive method of near-infrared transillumination/back scattering sounding

• Autorzy: Frydrychowski A. F. , Rojewski M. , Gumiński W.
• Języki publikacji: EN

Abstrakty

EN

The authors present observations on influences of hesd movements and forced respiration on the magnitudes of signals acquired with the new, non-invasive technique of near-infrared transillumination/back scattering sounding NIR-T/BSS which signals depend upon and reflect the instantaneous width of the subarachnoid space and the amplitude of its pulsation of cerebrovascular origin. For elimination of influence of the changing volume of blood in superficial vessels of skin in the frontal region, each experiment was performed twice- without and with simultaneous non-invasive exclusion of blood flow in that region through skin compression. It was observed that the recorded changes in the NIR-T/BSS signals reflecting those in the instantaneous width of the subarachnoid space and its cerebrovascular pulsation follow the time-pattern of the evoking factor, i. e. either the rhythm of the head movements or the forced respiration, which can be demonstrated on the basis of spectral analysis of the acquired transillumination signals.

Słowa kluczowe

EN

subarachnoid space; transillumination; spectral analysis

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2002
• Tom: Vol. 10, No. 2
• Strony: 151--157
• Opis fizyczny: Bibliogr. 17 poz

Twórcy

autor

Frydrychowski A. F.

autor

Rojewski M.

autor

Gumiński W.

• Departament of Physiology, Medical University of Gdańsk, 1 Dębinki Str., 80-211 Gdańsk, Poland,

Bibliografia

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