A PVDF transducer array in reception to estimate temperature gradients

摘要

This work describes a technique to estimate temperature gradients to the interior of a soft tissue phantom simulator in a total volume of 500 ml; the algorithm used for detecting temperature changes is based on the detection of phase shifts. The chosen exploration mode was through transmission, a commercial ultrasonic PZT transducer (21 mm in diameter) was used as a transmitter and a linear array of PVDF ultrasonic transducer (9 μm thickness) as a receiver, obtaining a spatial resolution of 4 mm in width by 4 mm in height.