Measurement Publications And Terminology; Cardiac References - FujiFilm SonoSite X-Porte User Manual

Measurement publications and terminology

The following are the publications and terminology used for each calculation result.
Terminology and measurements comply with American Institute of Ultrasound in Medicine (AIUM)
published standards.

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 valve velocity (VMax) or A
2 o
LVOT = Left Ventricular Outflow Tract
Body Surface Area (BSA) in m
Grossman, W. Cardiac Catheterization and Angiography. Philadelphia: Lea and Febiger, (1980), p.90.
BSA = 0.007184 * Weight
Weight = kilograms
Height = centimeters
6-4
2
VTI
o
2
0.425 0.725
* Height
2
Measurement references