Date of Award
Spring 1991
Document Type
Thesis - Restricted
Degree Name
Master of Science (MS)
Department
Biomedical Engineering
First Advisor
Richie, James
Second Advisor
Heinan, James
Third Advisor
Hall, Anne
Abstract
Phased array technology has been used extensively for acoustic imaging since the mid 1980's. A phased array acoustic lens is similar to an optical lens in that they both have a well defined depth of focus. Image quality is optimal within the depth of focus and somewhat degraded outside of this zone. For a typical medical acoustic image (ultrasound), less than twenty-percent of the image falls within this optimum zone. In this thesis, we will examine a method of characterizing the spatial impulse response of a phased array acoustic image. Based on this analysis, we shall derive a set of inverse sampled filters which shall be used for image deblurring. In addition, an analysis of the effects of the filter length and coefficient precision shall also be performed.
Recommended Citation
McEathron, Brian T., "Filtering for Increased Depth of Field for Phased Array Ultrasonic Imaging" (1991). Master's Theses (1922-2009) Access restricted to Marquette Campus. 4949.
https://epublications.marquette.edu/theses/4949