Download e-book for iPad: Contrast-enhanced ultrasound in clinical practice: liver, by Thomas Albrecht, Lars Thorelius, Luigi Solbiati, Luca Cova,

By Thomas Albrecht, Lars Thorelius, Luigi Solbiati, Luca Cova, Ferdinand Frauscher, M. Hörmann

ISBN-10: 8847003040

ISBN-13: 9788847003040

The price of ultrasound distinction brokers (USCA) in daily scientific perform is dependent upon the pharmacokinetics, the sign processing, and the contrast-specific imaging modalities. Second-generation USCA, are blood pool brokers that don't leak into the organ tissue to be tested yet stay within the intravascular compartment expanding the Doppler sign amplitude in the course of their dynamic vascular section. making the most of the soundness in their microbubbles, they could face up to the acoustic strain of insonation far better than first-generation distinction media, which ends up in an elevated half-life of the agent and, accordingly, in a protracted diagnostic window. Concomitant with the development of distinction brokers, varied contrast-specific imaging modalities were built which, utilized in mixture with USCA and a low mechanical index, permit non-stop real-time grey-scale imaging. those fresh technical advancements have opened new chances within the use of USCA in a number of symptoms. Written through the world over well known specialists, the contributions accrued during this publication supply an summary of present and attainable destiny new purposes of USCA in regimen and scientific perform.

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Additional resources for Contrast-enhanced ultrasound in clinical practice: liver, prostate, pancreas, kidney and lymph nodes

Example text

When reactive nodes have extensive fatty changes, the hilus is enhanced, whereas the cortex remains homogeneously avascular. 41 42 Luigi Solbiati, Luca Cova A B C Fig. 1. 7-mm reactive node of the laterocervical chain on B-mode sonography (A). On CEUS, at 15 s after bolus injection of SonoVue, only the centrally located hilus is enhanced (B). At 20 s completely homogeneous enhancement of the nodal cortex is seen (C) Improved Characterization of Reactive and Malignant Lymph Nodes Using CEUS 43 ■ Granulomatous adenitis (Fig.

As for gray-scale US introduced in the 1980s, it has a good spatial resolution but a low sensitivity and specificity for prostate cancer detection [3], even with high-frequency probes (Fig. 1) and 3D and 4D imaging (Fig. 2). In order to improve cancer detection, color Doppler imaging (CDI) has been used. Unfortunately, subsequent studies have reported that CDI misses a considerable number of cancers and is insufficient in avoiding systematic prostate biopsy [4]. The present diagnostic strategy for the detection of prostate cancer foresees the use of the so-called sextant biopsy which is considered to be the gold standard [5].

However, limitations still exist because, despite the increase in the number of biopsies (up to 18 or more), cancer detection is not increasing [9-11]. Improvement in biopsy techniques is thus necessary and must be attained without increasing the number of biopsy cores, but rather by improving the US imaging technique. We know that an impor- Fig. 1. , hypoechoic area). Systematic biopsy revealed prostate cancer in the mid right Fig. 2. 3D and 4D gray-scale US images in a patient with prostate cancer in the mid right.

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Contrast-enhanced ultrasound in clinical practice: liver, prostate, pancreas, kidney and lymph nodes by Thomas Albrecht, Lars Thorelius, Luigi Solbiati, Luca Cova, Ferdinand Frauscher, M. Hörmann


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