Ultrasonic Doppler measurements of blood flow velocity of rabbit retinal vessels with high-frequency angled needle transducer

Author

Chen, Ruimin ; Paeng, Dong-Guk ; Matsuoka, Naoki ; Ameri, Hossein ; Zhou, Qifa ; Humayun, Mark ; Shung, K. Kirk

Author_Institution

Dept. of Biomed. Eng., Univ. of Southern California, Los Angeles, CA

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

1607

Lastpage

1610

Abstract

This paper presents a systematic ultrasonic Doppler measurement of retinal blood flow in vivo. In the method, a needle transducer with a beveled tip of 45deg was inserted into the vitreous cavity to access retinal vessels in the rabbit eye. A directional high-frequency (HF) pulsed-wave (PW) Doppler system was used to measure the blood flow velocity from different locations of rabbit retina vessels. The results indicate that the ultrasonic Doppler measurements of retinal blood speed were repeatable and reliable. This measurement would be useful to investigate retinal vein occlusion and to monitor blood speed of retinal vessels during/after surgery.

Keywords

Doppler measurement; biomedical transducers; biomedical ultrasonics; blood flow measurement; blood vessels; eye; surgery; ultrasonic transducers; velocity measurement; angled needle transducer; blood flow velocity measurement; blood speed monitoring; high-frequency pulsed-wave Doppler system; retinal vein occlusion; retinal vessel; ultrasonic Doppler measurement; vitreous cavity; Blood flow; Doppler measurements; Needles; Pulse measurements; Rabbits; Retina; Retinal vessels; Ultrasonic transducers; Ultrasonic variables measurement; Velocity measurement; angled PMN-PT needle transducer; high-frequency ultrasound Doppler; retinal blood flow velocity;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2008. IUS 2008. IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4244-2428-3

Electronic_ISBN

978-1-4244-2480-1

Type

conf

DOI

10.1109/ULTSYM.2008.0392

Filename

4803498