ACUSON Cypress™ Operator’s Manual
6-3
Overview of Cardiac Measurements
Types of Specific Cardiac Calculations
Table 27 shows the specific calculations for the different modes. The formulas
for each calculation are shown in Table 29, Table 30, and Table 31.
TABLE 27.
Specific Cardiac Calculations by Mode
2D Mode
LV
Volume, Biplane,
MOD
LV
Volume, Single Plane,
MOD
Fractional Area Change
Ejection Fraction
Stroke Volume
Cardiac Output
Cardiac Index
LV
Mass
LV
Mass Index
Percent Fractional Shortening
Percent Fractional Thickening
M-Mode
Percent Fractional Shortening
Percent Fractional Thickening
Ejection Fraction Cubed
Ejection Fraction Teichholz
Stroke Volume Cubed
Stroke Volume Teichholz
Cardiac Output Cubed
Cardiac Index Cubed
Cardiac Output Teichholz
Cardiac Index Teichholz
LV
Mass
LV
Mass Index
EPSS
–
E
Point to Septal Separation
Doppler
Peak Pressure Gradient
Mean Velocity
Mean Pressure Gradient
Time Velocity Integral
Stroke Volume
Cardiac Output
Mitral Valve Continuity Equation
using LVOT
Mitral Valve Continuity Equation
using Pulmonary Artery
Shunt Ratio
Time
Cardiac Index
Pressure Half-Time
Valve Area by Pressure Half-Time
Aortic Valve Continuity Equation
using V
max
Aortic Valve Continuity Equation
using
TVI
Right Ventricular Systolic Pressure
(RVSP) using VSD
Right Ventricular Systolic Pressure
(RVSP) using Tricuspid Valve
Regurgitation
Mitral Valve (MV) Slope
Tricuspid Valve (TV) Slope