Author :
Wade, Glen ; Keyani, Hormozdyar ; Pei, Soo-chang
Abstract :
System performance is substantially enhanced by using good attenuators in the system and employing a pulsing mode of operation. Spurious image elements, due to multiple reflections of the ultrasound in the acoustic cell and due to echoes from elements in the system which are not part of the object plane being imaged, can be eliminated in this fashion. In addition, depth discrimination can be substantially improved, in agreement with theory.
Keywords :
Acoustic images, Bragg-diffraction imaging, continuous-wave operation, depth discrimination, medical diagnosis, nondestructive testing, pulsed operation, reflection images, sensitivity, transmission images.; Acoustic beams; Acoustic imaging; Acoustic scattering; Acoustic transducers; Image analysis; Light scattering; Optical imaging; Optical reflection; Optical scattering; Ultrasonic imaging; Acoustic images, Bragg-diffraction imaging, continuous-wave operation, depth discrimination, medical diagnosis, nondestructive testing, pulsed operation, reflection images, sensitivity, transmission images.;
