TITLE

Heat transfer analysis for peripheral blood flow measurement system

AUTHOR(S)
Nagata, Koji; Hattori, Hideharu; Sato, Nobuhiko; Ichige, Yukiko; Kiguchi, Masashi
PUB. DATE
June 2009
SOURCE
Review of Scientific Instruments;Jun2009, Vol. 80 Issue 6, p064902
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Some disorders such as circulatory disease and metabolic abnormality cause many problems to peripheral blood flow condition. Therefore, frequent measurement of the blood flow condition is bound to contribute to precaution against those disorders and to control of conditions of the diseases. We propose a convenient means of blood flow volume measurement at peripheral part, such as fingertips. Principle of this measurement is based on heat transfer characteristics of peripheral part containing the blood flow. Transition response analysis of skin surface temperature has provided measurement model of the peripheral blood flow volume. We developed the blood flow measurement system based on that model and evaluated it by using artificial finger under various temperature conditions of ambience and internal fluid. The evaluation results indicated that proposed method could estimate the volume of the fluid regardless of temperature condition of them. Finally we applied our system to real finger testing and have obtained results correlated well with laser Doppler blood flow meter values.
ACCESSION #
42961854

 

Related Articles

  • Noninvasive Measurement of the Human Peripheral Circulation: Relationship Between Laser Doppler Flowmeter and Photoplethysmograph Signals from the Finger. Almond, Nicholas E.; Jones, Deric P.; Ernest D. Cooke // Angiology;Sep1988, Vol. 39 Issue 9, p819 

    Under certain conditions laser Doppler flowmeter (LDF) signals obtained from the finger pulp may appear very similar to those obtained by use of a direct current (dc) photoplethysmograph (PPG). A combined LDF/PPG system was used in conjunction with a circumference strain gauge as an index of...

  • A laser Doppler flowmeter using variable coherence to effect depth discrimination. Dougherty, G. // Review of Scientific Instruments;May92, Vol. 63 Issue 5, p3220 

    A novel means of investigating blood flow at different depths within the skin is described. By varying the coherence length of the diode laser source, the depth of the sampling volume over which Doppler signals are received could be controlled in a simple model system. The instrument has a...

  • Blood flow in the skin of the foot related to posture in diabetes mellitus. Rayman, G.; Hassan, A.; Tooke, J.E. // British Medical Journal (Clinical Research Edition);1/11/1986, Vol. 292 Issue 6513, p87 

    Investigates the measurement of blood flow in the feet of diabetic patients by using Doppler flowmeter in Great Britain. Effect of skin temperature on blood flow during dependency; Accountability for oedema in patients with neuropathy; Characteristics of the laser Doppler flowmeter technique.

  • Imaging: Mapping blood flow. Rachel Won // Nature Photonics;Jul2011, Vol. 5 Issue 7, p393 

    The article presents information on a scanning laser Doppler imaging system developed by Marcel Leutenegger and colleagues in Switzerland, that can be used to measure large-area blood flow in a living organism.

  • The wavelet transform is a useful tool for the assessment of the lower limb microcirculation. Silva, H.; Ferreira, H.; Bujan, M. J.; Monteiro Rodrigues, L. // Proceedings of the Physiological Society;2014, p311P 

    An abstract of the article "The wavelet transform is a useful tool for the assessment of the lower limb microcirculation" by H. Silva, H. Ferreira, M. J. Bujan and L. Monteiro Rodrigues is presented.

  • Evaluation of Blood Flow in Tumor Masses by Using 2D-Doppler Color Flow Mapping -- Case Reports. Itoh, Kouichi; Suzuki, Osamu; Yasuda, Yoshikazu; Aihara, Toshinori // Angiology;Sep1987, Vol. 38 Issue 9, p705 

    Blood flow in tumor masses was detected with 2D-Doppler color flow mapping in 3 cases; a pancreatic carcinoma in a sixty-five-year-old woman, a renal cell carcinoma in a sixty-two-year-old woman, and a chemodectoma in a sixty-six- year-old woman.

  • Digital Blood Flow Response to Body Warming, Cooling, and Rewarming in Patients with Raynaud's Phenomenon. Lau, C. S.; Khan, F.; Brown, R.; McCallum, P.; Belch, J. J. F. // Angiology;Jan1995, Vol. 46 Issue 1, p1 

    Although the diagnosis of Raynaud's phenomenon (RP) is usually made easily from a careful history, the assessment of RP severity is difficult, for the vasopastic attacks are not easily induced under experimental conditions. In this study, the laser Doppler flowmetry (LDF) technique was used to...

  • Aldose Reductase Pathway Inhibition Improved Vascular and C-Fiber Functions, Allowing for Pressure-Induced Vasodilation Restoration During Severe Diabetic Neuropathy. Demiot, Claire; Tartas, Maylis; Fromy, Bérengère; Abraham, Pierre; Saumet, Jean Louis; Sigaudo-Roussel, Dominique // Diabetes;May2006, Vol. 55 Issue 5, p1478 

    Pressure-induced vasodilation, a neurovascular mechanism relying on the interaction between mechanosensitive C-fibers and vessels, allows skin blood flow to increase in response to locally nonnociceptive applied pressure that in turn may protect against pressure ulcers. We expected that severe...

  • LASER DOPPLER MEASUREMENT OF CUTANEOUS BLOOD FLOW. Holloway Jr., G. Allen; Watkins, Dennis W. // Journal of Investigative Dermatology;Sep77, Vol. 69 Issue 3, p306 

    This work describes an instrument for the noninvasive measurement of cutaneous blood flow velocity. The system utilizes the Doppler shift of laser light backscattered from moving red blood cells in the cutaneous microcirculation, the shift being obtained by an optical heterodyning technique....

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics