1,721,443 research outputs found
Radiological imaging of the kidney (2nd edition)
No full textThis book, now in its second edition, provides a comprehensive analysis of imaging of the kidneys, upper urinary tract, and ureters, covering the normal anatomy and anatomic variants as well as all renal and urinary system pathologies. The relevant imaging modalities are first discussed, with detailed description of their applications. The entire spectrum of kidney pathologies is then presented in a series of detailed chapters with up-to-date references, high-quality images, informative schemes, and figures showing macroscopic and microscopic surgical and pathologic specimens. Chapters relating to the latest innovations in tumor ablation, vascular and nonvascular interventional procedures, and parametric and molecular imaging have been updated to reflect progress in these rapidly evolving fields. This book will be of great interest to all radiologists, oncologists, nephrologists, and urologists who are involved in the management of kidney pathologies
Contrast-enhanced ultrasound of the small bowel in Crohn’s disease
No full textCrohn’s disease (CD) is a chronic transmural inflammatory
disease of the gastrointestinal tract characterized
by episodes of inflammation alternating with periods of
remission. Unenhanced grey-scale ultrasound may evaluate
the localisation and the length of the affected
intestinal segments and may detect transmural complications,
including fistulas, abscesses and phlegmons, but
it is less accurate to assess the CD activity. Contrastenhanced
ultrasound has become an important imaging
modality in patients with CD for the grading of disease
activity, the differentiation between small bowel stricture
due to inflammation or mural fibrosis, and for the
assessment of the response to specific therapy. New
dedicated software packages allow the accurate quantification
of the enhancement within the small bowel wall
after microbubble contrast agent injection to obtain
different kinetic semi-quantitative parameters—the percentage
of the maximal enhancement, the time-to-the
peak enhancement, and the area under the time–intensity
curve—which are very useful to differentiate the
inflammatory oedema from fibrosis and to differentiate
responders from non-responders to the specific therapy
among patients with CD
Imaging Findings in Renal Tuberculosis on CT Urography.
No full textGenito-urinary tuberculosis is the most common manifestation of extrapulmonary tuberculosis. Classic findings of renal tuberculosis on
computed tomography (CT) urography include calcifications, deformation of calyces, obstructive hydronephrosis or hydrocalyx and medullary and papillary necrosis. The different macroscopic patterns of renal tuberculosis on CT urography include: the open form, with extension of the caseified necrosis to the intra-renal excretory tract; the closed form, with extension of necrosis towards the renal parenchyma with progressive tissue scarring; and putty kidney
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