Optical assessment of apparent phase velocity: carotid-temporal photoplethysmograph flow waves in response to apnea

Author

Desiderio, M.C.

Author_Institution

Biomed. Eng., Rutgers Univ., Piscataway, NJ, USA

fYear

2005

fDate

2-3 April 2005

Firstpage

152

Lastpage

153

Abstract

Optic sensors of blood flow can provide noninvasive assessment of elastic properties of extracranial vessels. Photoplethysmographic data can be used to assess pulse velocities as blood is transmitted from the carotid to the temporal artery. Apparent phase velocities give much information regarding the transmission of pulse waves by examining frequency characteristics of flow. The apparent phase velocities through this vascular segment increases in periods of apnea, especially in the higher frequency components, indicating response of increased vascular stiffness of the extracranial arteries.

Keywords

biomechanics; blood flow measurement; blood vessels; cardiovascular system; optical sensors; plethysmography; pneumodynamics; apnea; apparent phase velocity; blood flow frequency characteristics; blood flow optic sensors; carotid; carotid-temporal photoplethysmograph flow waves; extracranial arteries; extracranial vessel elastic properties; optical assessment; pulse velocity; pulse wave transmission; temporal artery; vascular segment; vascular stiffness; Arteries; Biomedical engineering; Biomedical measurements; Biomedical optical imaging; Blood flow; Cardiology; Equations; Frequency; Image motion analysis; Optical sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 2005. Proceedings of the IEEE 31st Annual Northeast

Print_ISBN

0-7803-9105-5

Electronic_ISBN

0-7803-9106-3

Type

conf

DOI

10.1109/NEBC.2005.1431969

Filename

1431969