ULTRASONIC SPECKLE IS THE MOST IMPORTANT SOURCE OF NOISE DEGRADING CLINICAL ULTRASOUND IMAGES AND IT LIKELY IMPAIRS THE DETECTABILITY OF LOW-CONTRAST TUMORS.

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 3075
Amount: $49,938.00
Phase: Phase I
Program: SBIR
Awards Year: 1985
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
3044 Scott Blvd., Santa Clara, CA, 95054
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 STEVE M. GEHLBACH
 PRINCIPAL INVESTIGATOR
 (408) 748-1814
Business Contact
Phone: () -
Research Institution
N/A
Abstract
ULTRASONIC SPECKLE IS THE MOST IMPORTANT SOURCE OF NOISE DEGRADING CLINICAL ULTRASOUND IMAGES AND IT LIKELY IMPAIRS THE DETECTABILITY OF LOW-CONTRAST TUMORS. PHASE I AND PHASE II OF THIS RESEARCH EFFORT ARE DEVOTED TO THE EVALUATION OF THE IMPROVEMENT IN TUMOR DETECTABILITY WHICH MAY BE ACHIEVED BY SEVERAL SPECKLE REDUCTION TECHNIQUES IN ULTRASONIC IMAGES, AND DEFINITION OF THOSE WAVEFORM PROCESSING MODALITIES THAT LEAD TO OPTIMUM IMPROVEMENT IN IMAGE QUALITY. IN PHASE I, ULTRASONIC DATA WILL BE ACQUIRED FROM A CONTRAST RESOLUTION PHANTOM AND STORED ON FLOPPY DISK. FREQUENCY DIVERSITY TECHNIQUES, AVERAGING OF DIGITALLY FILTERED SCAN DATA ACQUIRED EMPLOYING BROAD-BAND TRANSDUCERS, WILL BE USED FOR SPECKLE REDUCTION. THE RESULTING SPECKLE REDUCED IMAGES WILL BE EVALUATED FOR THE DETECTABILITY OF LOW-CONTRAST TARGETS. THE RESULTS OF PHASE I WILL BE USED TO GUIDE PHASE II, A MORE INVOLVED STUDY OF OBSERVERS' ABILITY TO DETECT LOW-CONTRAST TARGETS IN SPECKLE-REDUCED IMAGES FROM PHANTOMS AND PATHOLOGIC SPECIMENS. A SPECIALLY DESIGNED DATA ACQUISITION SYSTEM WILL BE USED FOR SPATIAL AND FREQUENCY DIVERSITY AVERAGING. THE FRAMEWORK OF KNOWLEDGE CREATED WILL INDICATE POSSIBLE HARDWARE AND PROCESSING IMPROVEMENTS IN CLINICAL SCANNERS FOR

* Information listed above is at the time of submission. *

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