Exam Solution Manual for Spectral Doppler in Vascular Sonography 100% Pass
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Course
Vascular Sonography
Institution
Vascular Sonography
Exam Solution Manual for Spectral Doppler in Vascular Sonography 100% Pass
Duplex sonography - Answers Combines gray scale imaging and pulsed Doppler
Spectral waveform - Answers Created from a specific area in a vessel
Pulsed Doppler - Answers Utilizes spectral analysis to visualize Doppler sign...
Spectral waveform - Answers Created from a specific area in a vessel
Pulsed Doppler - Answers Utilizes spectral analysis to visualize Doppler signal
Angle of insonation - Answers Should be 60 degrees or less for accurate evaluation
Doppler equation - Answers ΔF = Doppler-shifted frequency, V = blood flow velocity, F 0 = carrier
Doppler frequency, cos Θ = angle of insonation, c = constant for speed of sound
Sample volume - Answers Obtains blood velocity and direction of flow
Velocity profile - Answers Influenced by vessel characteristics and presence of turbulence
Systolic component - Answers Acceleration phase and velocity of blood flow
Infrarenal aorta flow - Answers May have minimal or reverse diastolic flow
Celiac artery peak systolic velocity - Answers Ranges from 98 to 105 cm/s
Hepatic artery function - Answers Supplies approximately 30% of oxygenated blood to the liver
Hepatic Artery - Answers Low-resistance end organ with constant forward flow
Portal Venous Flow - Answers Compromised flow leading to increased hepatic artery velocity
Superior Mesenteric Artery - Answers Supplies pancreas, small intestine, and colon with varying flow
Fasting State - Answers High resistance to arterial flow with low diastolic flow
Post-prandial State - Answers Increased flow reflecting metabolic demands after a meal
Renal Arteries - Answers High diastolic flow supplying kidneys with constant blood
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