Title :
The analysis of blood flow changes under local anesthetic input using non-contact technique
Author :
Rubins, U. ; Miscuks, A. ; Rubenis, O. ; Erts, R. ; Grabovskis, A.
Author_Institution :
Inst. of Atomic Phys. & Spectrosc., Univ. of Latvia, Riga, Latvia
Abstract :
In this work photoplethysmography imaging (PPGI) technique was used to obtain blood flow changes in human skin under regional anesthesia (RA). PPGI was evaluated from video taken by video camera for 26 patients 2 minutes before and immediately after RA, using custom developed software. Results showed that blood flow obtained by PPGI increases immediately after RA effect and the amplitude of PPGI showed correlation with temperature changes in human skin (r=0.8±0.14, p<;;0.0001). We found that PPGI technique can be usable for non-contact monitoring of quality of RA.
Keywords :
biomedical optical imaging; blood flow measurement; medical diagnostic computing; medical signal processing; patient monitoring; plethysmography; skin; video signal processing; blood flow analysis; human skin; local anesthetic input; noncontact monitoring technique; photoplethysmography imaging; temperature variation; video camera; Blood; Cameras; Skin; Software; Streaming media; Temperature measurement; PPGI; non-contact photoplethysmography; photoplethysmography imaging; regional anesthesia; skin blood perfusion;
Conference_Titel :
Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6495-1
DOI :
10.1109/BMEI.2010.5640023
