Results 231 to 240 of about 19,782 (248)

Laser Doppler Flowmetry for monitoring traumatized teeth

Dental Traumatology, 2001
Abstract – Laser Doppler Flowmetry (LDF) has been shown to be valuable in monitoring revascularization of immature incisors following severe dental trauma. Several investigators have demonstrated the ability of LDF to record blood flow signals from vital tooth pulps.
Kallaya Yanpiset, Asgeir Sigurdsson, William F. Vann, Jessica Y. Lee   +3 more
openaire   +3 more sources

Spectral analysis of laser Doppler flowmetry signals

2012 IEEE 2nd Portuguese Meeting in Bioengineering (ENBENG), 2012
A new multi-wavelength laser Doppler flowmeter prototype with different spaced detection optical fibres, built in order to give depth discrimination capabilities to laser Doppler flowmetry technique (LDF), was developed. The Fourier transform and the power spectral density of LDF signals measured by the laser Doppler flowmeter prototype were calculated
Campos, R., Figueiras, Edite, F. Requicha Ferreira, L., Humeau-Heurtier, Anne   +3 more
openaire   +4 more sources

The anatomy of the human promontory for laser Doppler flowmetry

European Archives of Oto-Rhino-Laryngology, 1997
Studies of the dynamic characteristics of cochlear blood flow (CBF) utilizing laser Doppler flowmetry (LDF) in laboratory animals have provided a new approach to the understanding of control mechanisms of CBF and the role of the CBF in cochlear disorders. However, few studies exist indicating that LDF of human CBF may be possible. Since bone thickness,
H. Aho, P. Kanninen, E. Laurikainen, P. Saukko   +3 more
openaire   +3 more sources

Evaluation of Laser Doppler Flowmetry in Renal Transplantation

Journal of Clinical Laser Medicine & Surgery, 1994
Renal grafts are presently evaluated based on the surgeon's observation of the organ microcirculation. Effectiveness of organ microcirculation has traditionally been accomplished through evaluation of the appearance of the graft. Laser doppler flowmetry (LDF) has been suggested as a possible means to determine graft effectiveness.
Yasushi Harihara, Tsunamasa Inou, Keihachiro Kuzuhara, S. Nishimori, Osamu Otsubo, Yosuke Ogura, Y. Kurooka, Takayoshi Yanagisawa, Akira Yamada   +8 more
openaire   +3 more sources

Laser Doppler Flowmetry and Fetal Oxygenation

1992
Due to the inaccessibility of the fetus, continuous direct monitoring of the carotid arterial blood pH and gas values is not yet feasible. Information on the fetal arterial pH and blood gas values can be obtained from the capillary circulation of the presenting part, usually the fetal scalp.
T. M. Smits, J. G. Aarnoudse
openaire   +2 more sources

Tendon Blood Flow Assessed by Laser Doppler Flowmetry

Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery, 1991
Laser Doppler flowmetry was applied to the surface of both achilles tendons in 10 mature albino rats. A prompt decline in flux values by about 60% was noted when the blood supply to the limb was interrupted by clamping the femoral artery. Increased values, indicating a hyperaemic reaction, often followed release of the clamp.
Mats Åström, Henry Svensson
openaire   +3 more sources

Potential accuracy of laser Doppler flowmetry

SPIE Proceedings, 1993
Taking into account the current research results of the probabilistic model describing the laser Doppler flowmetry signal, the probability-density function is derived and the potential attainable in the measurements of the unknown parameters in the laser Doppler flowmetry accuracy is analyzed.
Igor N. Troitsky, A. J. Kharitonov
openaire   +2 more sources

<title>Laser Doppler flowmetry in neurosurgery</title>

SPIE Proceedings, 1991
Laser Doppler Flowmeter (LDF) is a new, reliable and simple method to monitor regional Cerebral Blood Flow (rCBF). Our group began to perform intraoperative LD recordings in 1986. Recently, the advent of new special probes and the use of computer techniques, allowed two important improvements: an easy and safe postoperative LDF monitoring in Intensive ...
Fasano V. A., Urciuoli R., Bolognese P., Fontanella M.   +3 more
openaire   +3 more sources

Measurement of Femoral Head Microcirculation by Laser Doppler Flowmetry

Journal of Pediatric Orthopaedics, 1991
Perfusion of the capital femoral epiphysis was measured by laser Doppler flowmetry (LDF) in a series of skeletally immature pigs. After induction of balanced general anesthesia, selective occlusion of the arterial blood supply to the hip was performed with continuous monitoring by a laser Doppler probe applied to the articular surface of the femoral ...
David M. Apel, Vernon T. Tolo, George S. Bassett, Virginia Garnett Wintersteen   +3 more
openaire   +3 more sources

Penetration depth of laser Doppler flowmetry beam in teeth

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 2005
The aim of this study was to determine the penetration depth of laser light in teeth for contact and noncontact probe tip.Fifty-one freshly extracted human mature maxillary and mandibular single rooted teeth were selected for the study. A laser Doppler flowmeter was used as a laser source.
Polat, S, Er, K, Polat, NT
openaire   +5 more sources