Method for determining the perfusion

Details Method for determining the perfusion Method for determining the perfusion

1987-08-13

1989-09-19

Wayner, William E.

Surgery

Truss

Pad

128666, 356382, A61B 500

Patent

active

048671657

ABSTRACT:
A method is proposed for determining the perfusion by evaluation of the light emitted by at least one light source and influenced by the arterial blood, by use of optical measuring means which measure the intensity variation as a consequence of the variation in arterial blood volume. According to this method, the perfusion is either displayed as variation in thickness from the sum of the parallel tissue enlargements d or as normalized volume. The perfusion is derived by one or more measurements of light intensity. According to the invention, for the first time a method for determining perfusion as a quantitative value is provided.

REFERENCES:
patent: 3496373 (1970-02-01), Thorman et al.
patent: 3545430 (1970-12-01), Figar
patent: 3732016 (1973-05-01), Deshayes
patent: 4109643 (1978-08-01), Bond et al.
patent: 4167331 (1979-09-01), Nielsen
patent: 4407290 (1983-10-01), Wilber
IEEE Transactions on Biomedical Engineering, BME-33, Aug., No. 8, New York, pp. 795-797: Noninvasive Measurement of the Volume Elastic Modulus in Finger Arteries Using Photoelectric Plethysmography.

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