DocumentCode :
2356539
Title :
P3B-3 Staining Doppler Audio
Author :
Hoffman, Matthew D. ; Cook, Perry R. ; Vilkomerson, David H.
Author_Institution :
Dept. of Comput. Sci., Princeton Univ., NJ
fYear :
2006
fDate :
2-6 Oct. 2006
Firstpage :
1999
Lastpage :
2002
Abstract :
Carotid stenoses are responsible for many of the strokes occurring each year. We have developed a low-cost-of-use instrument for use in primary-care physicians\´ offices that can detect these stenoses before they produce a stroke. Non-specialists are to use the instrument with only limited training, so it is desirable to make the Doppler audio it produces as easy to interpret as possible. We present two techniques for doing so by processing or "staining" the original audio signal to make it easier for neophyte operators to recognize the information present in the signal. In a small user study, a technique based on adaptive filtering did not result in an improvement, but another technique based on adding a sine tone of varying frequency to the signal produced a significant improvement in accuracy over the unstained Doppler audio. The study also showed that untrained subjects were capable of performing quite well even on unstained audio
Keywords :
Doppler measurement; bioacoustics; blood vessels; medical signal processing; patient diagnosis; Doppler audio; audio signal processing; audio signal staining; carotid stenoses; Brain; Carotid arteries; Computer science; Hypertension; Instruments; Probes; Prostate cancer; Signal processing; Transmitters; Ultrasonic imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
ISSN :
1051-0117
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
Type :
conf
DOI :
10.1109/ULTSYM.2006.511
Filename :
4152367
Link To Document :
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