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Ultrasonic output measurements of multiple-mode diagnostic ultrasound systems

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3 Author(s)
Szabo, T.L. ; Hewlett-Packard Co., Andover, MA, USA ; Melton, H.E., Jr. ; Hempstead, P.S.

Electronic control has brought unprecedented flexibility and complexity in the variety of ultrasonic signals and beams available from a single modern multiple-mode ultrasonic imaging system. The process of measuring the ultrasonic output of these systems is started with the identification of relevant system parameters. Because the combinations of control settings for these parameters can number in the tens of thousands for some of the newer systems, a rational methodology for finding the highest global intensity or pressure values was necessary. To aid in the search, a linear simulation model was developed to predict those control settings that produce the highest relative intensity and pressure levels and their peak locations. This information became the starting point for actual measurements. An equipment setup suitable for multimode measurements is described. Experimental mapping procedures were used to find actual global maxima by varying a smaller subset of control parameters. Data were checked by formulae derived specifically for multimode measurements.<>

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:35 ,  Issue: 2 )