Kl. Dixon et Fa. Duck, DETERMINING THE CONDITIONS FOR MEASUREMENT OF SPATIAL-PEAK TEMPORAL-AVERAGED INTENSITY IN SCANNED ULTRASOUND BEAMS, British journal of radiology, 71(849), 1998, pp. 968-971
This paper describes a new three stage approach which simplifies the p
rocess of measurement of spatial-peak temporal-averaged intensity for
scanned ultrasound beams. Firstly, the conditions delivering the maxim
um total acoustic power are determined. Secondly, out-of-plane beamwid
ths are measured which, together with knowledge of the in-plane scan w
idths, are used to locate the depth at which the scanned area is at a
minimum. Finally, the spatial-peak temporal-average intensity is measu
red using the conditions and depth identified in the first two stages.
Experimental results justify the use of this new procedure.