An Analysis of the Parameters Affecting Texture in a B-Mode Ultrasonogram
The complex echo-intensity patterns observed in gray-scale B-mode ultrasonograms are known as texture. Texture is functionally related to the type and state of tissue interrogated, to the statistics of the scattering process, to the characteristics of the interrogating ultrasound pulse, to the scanning technique utilized, and to the type of display instrumentation. We have recently begun a program to examine the nature of texture, as it applies to medical ultrasonics, and are in the process of investigating the various tissue, acoustical, and instrumentation parameters which affect and determine texture. This paper presents the results of our investigation to date. As a part of our study we have simulated on a computer (Perkin-Elmer 8/32) the chain of electronic processing from individual A-line ultrasound waveforms to the B-mode display. By changing in software the various processing parameters we have investigated their effect on texture. Several statistical measures of texture have been developed for a quantitative comparison and analysis of our results. The implications of this study to the design of B-mode ultrasound devices are noted and reviewed.
KeywordsGray Level Instrumentation Parameter Acoustical Image Medical Ultrasonic Computer Simulation Computer Simulation
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