Title :
Examples of design curves for multirow arrays used with time-shift compensation
Author :
Lacefield, James C. ; Waag, Robcrt C.
Author_Institution :
Rochester Univ., NY, USA
Abstract :
The effect of 1.75-D array element height on time-shift compensation is analyzed using a two-dimensional array system and a distributed aberration phantom. The analysis uses hydrophone measurements of transmit beams. The results indicate that, for imaging at 3 MHz through aberration representative of the abdominal wall, similar focus compensation performance can be expected from arrays with element pitches less than or equal to 3.0 mm.
Keywords :
aberrations; biomedical transducers; biomedical ultrasonics; compensation; ultrasonic focusing; ultrasonic transducer arrays; 1.75-D array element height; 3 MHz; 3.0 mm; abdominal wall; aberrator characteristics; design curves; distributed aberration phantom; element pitches; focus compensation performance; hydrophone measurements; imaging frequency; multirow arrays; time-shift compensation; transmit beams; transmit focus compensation; two-dimensional array system; ultrasonic pulse distortion; Abdomen; Degradation; Fluctuations; Focusing; Frequency; Imaging phantoms; Needles; Scattering; Sonar equipment; Ultrasonic imaging; Phantoms, Imaging; Scattering, Radiation; Transducers; Ultrasonography;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2002.1041551
