MULTIDIRECTIONAL ULTRASONIC BLOOD-FLOW-IMAGING SYSTEM

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 13921
Amount: $497,639.00
Phase: Phase II
Program: SBIR
Awards Year: 1992
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Bio-imaging Research Inc.
425 Barclay Blvd, Lincolnshire, IL, 60069
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 M Nikoonahad
 (312) 634-6425
Business Contact
Phone: () -
Research Institution
N/A
Abstract
ULTRASOUND FLOW MEASUREMENT AND PARTICULARLY COLOR FLOW MAPPING (CFM) SYSTEMS PROVIDE A VALUABLE TOOL FOR MEDICAL DIAGNOSIS. THESE TECHNIQUES PRIMARILY EXPLOIT THE DOPPLER EFFECT WHICH, DESPITE ITS GREAT SUCCESS, RESULTS IN TWO FUNDAMENTAL DRAWBACKS: (1) THE INABILITY TO MEASURE NONAXIALFLOW COMPONENTS AND (2) THE INABILITY TO MEASURE HIGH VELOCITIES AT LARGE DEPTHS. THIS PROJECT WILL DEVELOP A SYSTEM THAT (1) PROVIDES THE CAPABILITY FOR MEASURING THE TRANSVERSE COMPONENTS OF FLOW VELOCITY AND (2) CAN MEASURE VERY HIGH VELOCITIES, BOTH WITHHIGH LATERAL RESOLUTION. THE TECHNIQUE USES A NEWLY DEVELOPED MULTIBEAM ACOUSTIC LENS IN WHICH THE SEPARATIONS BETWEEN THE ACOUSTIC FOCI ARE PREDETERMINED BY THE LENS DESIGN. THE ULTRASOUND SIGNALS SCATTERED FROM THESE FOCI ARE CROSS-CORRELATED, RESULTING IN FLOW VELOCITY MEASUREMENT. IN PHASE I, THIS WILL BE DEMONSTRATED BY A SUITABLE DUAL-BEAM ACOUSTIC LENS USING A FLOW PHANTOM. THIS WILL THEN PAVE THE WAY FOR A 3-D VELOCITY VECTOR IMAGING SYSTEM. DURING PHASE II, A THREE-BEAM SYSTEM WILL BE DEVELOPED AND COMBINED WITH CONVENTIONAL DOPPLER FOR A COMPLETE 3-D FLOW VELOCITY VECTOR IMAGING SYSTEM. SUCH A SYSTEM SHOULD ACCURATELY DETECT FLOW DISTURBANCES ARISING FROM, FOR EXAMPLE, ATHEROSCLEROTIC LESIONS.

* information listed above is at the time of submission.

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