Measurement Publications And Terminology - FujiFilm SonoSite SII User Manual Supplement

Measurement publications and terminology

Cardiac references
Acceleration (ACC) in cm/s
Zwiebel, W.J. Introduction to Vascular Ultrasonography. 4th ed., W.B. Saunders Company, (2000), p.52.
ACC = abs (delta velocity/delta time)
Acceleration Time (AT) in msec
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual. 3rd ed., Lippincott, Williams, and Wilkins, (2007),
p.147-148.
[time a - time b]
where: time a = early time;
time b = later time;
only valid when [a] > [b]
Aortic Valve Area (AVA) by Continuity Equation in cm
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual. 3rd ed., Lippincott, Williams, and Wilkins, (2007), p.73 and
p.191-195.
A = A * V /V
2 1 1 2
where: A = A valve area
2 o
A = LVOT area;
1
V = Peak LVOT velocity (Vmax) or LVOT VTI
1
V = Peak A
2
LVOT = Left Ventricular Outflow Tract
Deceleration Time in msec
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual. 3rd ed., Lippincott, Williams, and Wilkins, (2007), p.73-74.
[time a - time b]
where: time a = time associated with Vmax;
time b = when the line tangent to the envelope and through Vmax crosses the baseline
Measurement references
2
valve velocity (Vmax) or A
o
2
VTI
o
35