Year: 1995
Type: article
Abstract: The development of piezocomposites has been the main recent source for improved performance of transducers.This has given improved nearfield, higher bandwidths, and is about to give 1.5D probes with two-dimensional focusing, and eventually 2D arrays for steering and focusing of beams in 3D data volumes.Due to the advent of digital beamformers implemented with custom VLSI chips, there has also been an improvement in image quality due to a more precise control over the beam, as well as provision for individual correction of transducer imperfections.In addition the reception of several beams in parallel is possible.New hybrid image formats such as steering of linear and curved arrays, and scanning of phased arrays in combination with steering, now emerge.Adaptive correction for phase aberrations due to tissue inhomogeneities may also become reality.
Author: Sverre Holm
Language: English
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W1510877080