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Particle image‐resolution test object.
Author(s) -
Goldstein A,
Clayman W
Publication year - 1983
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1983.2.5.195
Subject(s) - contrast (vision) , computer vision , artificial intelligence , resolution (logic) , object (grammar) , image resolution , transducer , standard test image , image (mathematics) , medicine , optics , computer science , image processing , acoustics , physics
A blur definition and measurement technique for high‐subject‐contrast image resolution is proposed. A new test object utilizing the blur principle has been developed and feasibility tested. In developing this new test object, tests of various sizes and concentrations of small plastic particles in a gelatin base were performed. Optimum particle sizes and concentrations were selected for the popular clinical transducer frequencies. Test images were obtained with static and real‐time transducers of various focal properties. In all cases the proposed test object clearly indicated the zone (focal zone) of optimum high‐subject‐contrast image resolution. The advantages of the proposed blur definition and measurement technique of high‐subject‐contrast image resolution include: test object simplicity, ease of performing and interpreting the measurement, usefulness for all types of real‐time scanners, and the need for only one scan for both axial and lateral resolution information at all image depths.