FujiFilm SONOSITE X-PORTE, Руководство пользователя

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6-10 Measurement references
L = Length of the chamber
i = Disk index
Left Ventricular Volume: Single Plane Method in ml
Schiller, N.B., P.M. Shah, M. Crawford, et al. “Recommendations for Quantitation of the Left Ventricle by
Two-Dimensional Echocardiography.”
Journal of American Society of Echocardiography .
September-October 1989, 2: p.362.
Simpson’s method is used to model the chamber as a stack of circular disks.
where:
V = Volume
a
i
= Diameter of disk i in mm
n = Number of disks (n=20)
L = Length of chamber, measured from the midpoint of the line connecting the two opposite sides of
the mitral ring and the most distant point (apex) of the chamber contour
i = Disk index
Left Ventricular Dimension (LVD) Fractional Shortening, percent
Oh, J.K., J.B. Seward, A.J. Tajik. The Echo Manual . 3rd ed., Philadelphia: Lippincott, Williams, and Wilkins,
(2007), p.115.
LVDFS = [(LVDD – LVDS)/LVDD] * 100%
where:
LVDD = Left Ventricle Dimension at Diastole
LVDS = Left Ventricle Dimension at Systole
LV Ejection Fraction
Schiller, N.B., Shah, P.M., Crawford, M., et al. “Recommendations for Quantification of the Left Ventricle by
Two-Dimensional Echocardiography.”
Journal of American Society of Echocardiography
.
September-October 1989, 2: p.364.
EF =((End Diastolic Volume - End Systolic Volume)/End Diastolic Volume) * 100 (%).
Left Ventricular Posterior Wall Fractional Thickening (LVPWFT), percent
Laurenceau, J. L., M.C. Malergue. The Essentials of Echocardiography . Le Hague: Martinus Nijhoff, (1981),
p.71.
LVPWFT = [(LVPWS – LVPWD)/LVPWD] * 100%
where:
LVPWS = Left Ventricular Posterior Wall Thickness at Systole
LVPWD = Left Ventricular Posterior Wall Thickness at Diastole
V

4
---
 
 
a
i
2
L
n
---
 
 
i 1 =
n

=