UID:
almahu_9949697639302882
Umfang:
1 online resource (x, 390 pages) :
,
illustrations (chiefly color)
Ausgabe:
3rd edition
ISBN:
9780702055379
,
0702055379
,
1336268247
,
9781336268241
Inhalt:
Clinical Doppler Ultrasound offers an accessible, comprehensive introduction and overview of the major applications of Doppler ultrasound and their role in patient management. The new edition of this medical reference book discusses everything you need to know to take full advantage of this powerful modality, from anatomy, scanning, and technique, to normal and abnormal findings and their interpretation. It presents just the right amount of Doppler ultrasonography information in a compact, readable format! Consult this title on your favorite e-reader, conduct rapid searches, and adjust font s
Anmerkung:
Front Cover ; Clinical Doppler Ultrasound; Copyright; Contents; Video Table of Contents; Preface; List of Contributors; Chapter 1: Physics: Principles, Practice and Artefacts; The Doppler Effect and Its Application; Continuous and Pulsed Wave Doppler Instruments; Imaging and Doppler; Duplex instruments; Colour Doppler imaging; Power Doppler imaging; Ultrasonic Microbubble Contrast Agents; Information from Doppler Signals; The spectrum analyser; Spectrograms (Sonograms) and Indices; Waveform indices; A/B Ratio; Resistance Index (RI); Pulsatility Index (PI); Damping Factor; Spectral Broadening; Transit Time; Artefacts in Doppler Techniques; Attenuation; Refraction; Shadowing and enhancement; Beam width; Spectral broadening; Overestimation of Maximum Velocity; Speckle and the spectral display; Inadequate coupling; Electrical pick-up; Compression of the spectral display; Erroneous direction sensing; Filtering; Harmonic generation by large signal distortion; High or low sensitivity; Aliasing; Effect of beam angle to flow direction; Effect of velocity scale; Unexpected machine artefacts; Interference from neighbouring vessels; Vessel compression; Factors affecting the patient; Patient or vessel movement; Flash artefact; Twinkle artefact; Beam position within the vessel lumen; One-dimensional scan; Safety and Prudent Use of Doppler Instruments; Future Instrumentation; Three-dimensional Doppler flow imaging; Tissue Doppler imaging; Catheter Doppler; References; Chapter 2: Haemodynamics and Blood Flow; Principles of Blood Flow; Types of flow; Pressure and energy; Velocity profiles; Entrance Effect; Vessel Narrowing; Vessel Expansion; Curved Vessels; Y-Shaped Junction; Pulsatile Flow; Turbulence; Secondary Flow Motions; A simple flow model; Pulsatile flow and distal resistance; Quantitative Flow Measurement; Arterial Motion; Conclusions; References; Chapter 3: The Carotid and Vertebral Arteries; Transcranial Colour Doppler; The Carotid and Vertebral Arteries; Carotid disease and stroke; ECST & NASCET; Indications for carotid ultrasound; Cerebral Ischaemic Symptoms; Atypical Symptoms; Patients at Risk of Perioperative Stroke; Postendarterectomy Patients; Follow-Up of Carotid Stents; Pulsatile Masses; Carotid Dissection; Epidemiological Studies and Monitoring of Therapy; Anatomy and scanning technique; Identification of the Internal and External Carotid Arteries; Standard Velocity Measurements; Measuring the Intima-Medial Thickness; The Vertebral Arteries; Assessment of disease; Measurement of the Degree of Stenosis; Direct Visualisation and Measurement; Doppler Criteria; Effects of Disease Elsewhere; Carotid Occlusion; Plaque Characterisation; Pulsatile Masses; Dissection of the Carotid Arteries; Vertebral Arteries; Reporting Carotid Ultrasound Examinations; Problems and pitfalls in carotid ultrasound; Long and Eccentric Lesions; Tortuous Vessels; High-Grade Stenoses; Lesions at the Bifurcation
,
English
Weitere Ausg.:
ISBN 1336268247
Weitere Ausg.:
Print version: Clinical doppler ultrasound. Edinburgh : Churchill Livingstone/Elsevier, [2014] ISBN 9780702050152
Sprache:
Englisch
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