Measurement of HIFU Pressures, Intensities, and Beamwidths Using Spatiotemporal Deconvolution

High-intensity focused ultrasound (HIFU) beams are composed of many harmonic components. Harmonic component beamwidth decreases with harmonic frequency. For sufficiently high harmonic frequencies, harmonic component beamwidths may be on the order of, or smaller than, hydrophone sensitive element diameters. These harmonic components tend to get suppressed by the hydrophone, due to spatial averaging effects. This problem can be corrected using spatiotemporal deconvolution (STD), as has been demonstrated for diagnostic ultrasound signals [1], [2]. The objective of this work is to extend validation of STD to higher pressures (up to 49 MPa) than previously published (6 MPa).