Titlebook: Acoustical Imaging; John P. Powers Book 1982 Plenum Press, New York 1982 Phase.Vibration.inverse scattering problem.ultrasonic imaging.ult

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Auf dem Weg zur Stadtgesellschaftnatomy. Despite its undoubted success, however, there are limitations to its ability which warrant careful investigation. In this paper we shall limit our initial discussion to hepatic disorders and report on a new diagnostic technique, to complement existing B-scanning procedures, which provides ex

Flatter

Ronald Hitzler,Alexander Milanés methods. A knowledge of these parameters is essential also to describe fully the propagation of ultrasound waves in tissues, and to correct for certain image artefacts. However, even a cursory glance at the literature will reveal that published values for the observed attenuation, in particular, sh

hypotension

https://doi.org/10.1007/978-3-322-91372-2ntal to progress in both tissue characterization techniques and novel imaging methods, such as impediography (Jones, 1977), wave extrapolation (Berkhout, Ridder and van der Wal, 1981), diffraction- (Mueller, Kaveh and Iverson, 1980) and transmission- (Greenleaf, Johnson, Samayoa and Duck, 1975) tomo

FISC

Ronald Hitzler,Alexander Milanésuation of the scattering of ultrasound by human tissues is a topic which has received very little attention to date. Not only are the data sparse but the existing references tend to be implicit rather than explicit. Despite a recent interest in the frequency dependence of scattering measurements onl

斜

https://doi.org/10.1007/978-3-531-91418-3nnovative as well as conventional processing algorithms, we have recently studied the effects of lateral beam profile filters on ultrasonograms of objects which simulate the texture found in abdominal scans.

凌辱

Auf dem Weg zur biom?chtigen Gesellschaft?stem. This system, which operates at 2.25 MHz center frequency, employs a 32-element imaging array 1.28 cm wide. Thirty-two elements are used on transmit and the central sixteen elements on receive. After envelope detection, the image intensity obtained is stored in a solid state RAM and is availabl

廚師

Auf dem Weg zur digitalen Verwaltunges a weak target signal by rejecting a number of strong localized interferences. This two-dimensional null processing (2-DNP) technique is compared to the previously developed adaptive null processing (ANP) method and conventional beamforming methods, in part using computer simulation results. The a