TY - JOUR
T1 - Integrated optoelectronic probe including a vertical cavity surface emitting laser for laser Doppler perfusion monitoring
AU - Serov, Alexander
AU - Nieland, Janharm
AU - Oosterbaan, Sjoerd
AU - de Mul, Frits F.M.
AU - van Kranenburg, Herma
AU - Bekman, Herman H.P.Th.
AU - Steenbergen, Wiendelt
PY - 2006
Y1 - 2006
N2 - An integrated optoelectronic probe with small dimensions, for direct-contact laser Doppler blood flow monitoring has been realized. A vertical cavity surface emitting laser (VCSEL), and a chip with photodetectors and all necessary electronics are integrated in a miniature probe head connected to a laptop computer. The computer sound processor is utilized for acquisition and digital signal processing of the incoming Doppler signal. In this paper, the design of the laser Doppler perfusion monitor is described and its performance is evaluated. We demonstrate our perfusion monitor to be less sensitive to subject motion than a commercial fiber-optic device. For medium and high perfusion levels, the performance of our integrated probe is comparable to the fiber-optic flowmeter containing a normal edge-emitting laser diode. For very low perfusion levels, the signal-to-noise ratio of the fiber-optic device is higher. This difference can mainly be attributed to the shorter coherence length of the VCSEL compared with the edge-emitting laser diode.
AB - An integrated optoelectronic probe with small dimensions, for direct-contact laser Doppler blood flow monitoring has been realized. A vertical cavity surface emitting laser (VCSEL), and a chip with photodetectors and all necessary electronics are integrated in a miniature probe head connected to a laptop computer. The computer sound processor is utilized for acquisition and digital signal processing of the incoming Doppler signal. In this paper, the design of the laser Doppler perfusion monitor is described and its performance is evaluated. We demonstrate our perfusion monitor to be less sensitive to subject motion than a commercial fiber-optic device. For medium and high perfusion levels, the performance of our integrated probe is comparable to the fiber-optic flowmeter containing a normal edge-emitting laser diode. For very low perfusion levels, the signal-to-noise ratio of the fiber-optic device is higher. This difference can mainly be attributed to the shorter coherence length of the VCSEL compared with the edge-emitting laser diode.
KW - Blood flow measurement
KW - Doppler effect
KW - Optoelectronic devices
KW - Semiconductor laser
U2 - 10.1109/TBME.2006.877106
DO - 10.1109/TBME.2006.877106
M3 - Article
SN - 0018-9294
VL - 53
SP - 2067
EP - 2074
JO - IEEE transactions on biomedical engineering
JF - IEEE transactions on biomedical engineering
IS - 10
ER -