Type:
Educational Exhibit
Keywords:
Education, Normal variants, Ultrasound-Spectral Doppler, Ultrasound-Colour Doppler, Ultrasound, Veins / Vena cava, Emergency, Arteries / Aorta, Grafts, Haemodynamics / Flow dynamics
Authors:
C. Koegel1, D. A. Lopez Garcia2, S. Shang1; 1Philadelphia/US, 2Philadelphia, PA/US
DOI:
10.26044/ecr2019/C-3671
Background
Vascular ultrasound is often the first choice imaging modality to narrow down the differential diagnosis or even make the diagnosis.
Ultrasound is readily available and widely used in the majority of modern hospitals for a variety of diseases.
Evaluating blood flow of organs is an important component of sonographic studies,
often changing management of patients,
if abnormal.
Sound understanding of key concepts in pathophysiology,
physics of ultrasound and flow dynamics of normal and abnormal arteries and veins allows to make the diagnosis rapidly and confidently.
Especially residents do struggle with distinguishing abnormal from normal flow patterns and their interpretation,
and therefore,
do not take full advantage of the potential of this diagnostic technology.
This educational exhibit gives a comprehensive learning experience on normal and abnormal arterial and venous spectral Doppler waveforms in adults,
with correlation to commonly encountered diseases including renal and hepatic transplant complications.
TABLE OF CONTENT
1:Demonstrate sD parameter measurements including velocity,
resistive index,
early acceleration time,
various arterial resistance or venous phasic waveform patterns.
2:Normal color imaging and sD waveforms of major arteries & veins,
including normal sound of artery & vein during real time scanning.
3:Pictorial review of abnormal color and sD waveforms of multiple cases including:AV fistula,
pseudoaneurysm,
arterial stenosis with tardus-parvus waveforms in major arteries and liver/kidney transplant,
TIP focal stenosis,hemodialysis graft outflow stenosis,abnormal arterial Doppler waveform in renal vein thrombosis of kidney transplant,portal vein bidirectional blood flow secondary to CHF,
venous insufficiency,
subclavian steal syndrome,
etc.
(Some cases including color or sound changes in real time scanning).
4:Common pitfalls.
5.
QUIZ.