U60 Diagnostic Ultrasound System User Manual Cardiac Measurements and Calculations
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window. The system will display LVWMI if you have keyed in Height and Weight before the
measurement. If you had measured LV before, it will renovate the LV results.
9.2. Cardiac Measurements and Calculations in B Mode
1. Press Transducer, select the desired probe model and the exam mode Adult Cardiac/
Pedia Cardiac, and then press OK, or double click on the exam type.
2. In B mode, press Measure, the system enters B mode cardiac measurement. The B mode
cardiac measurement menus are shown as follows:
Figure 9-5 B Mode Cardiac Measurement and Calculation Menu
1. Items of Measurement and Calculation
B-CARDIAC MEAS: RV, LV, and PA.
2. Items of input
Heart Rate, LVET, and Height & Weight
The default measurements are LVLs, LVALs, LVLd, and LVALd measurements, by the method
of single-plane ellipse (S-P Ellipse) measurement.
The formulas of B mode cardiac LV measurement include Single plane ellipse (S-P Ellipse),
Dual plane ellipse (B-P Ellipse), Bullet, and Modified Simpson (Mod. Simpson), shown as
follows:
1. Single plane ellipse formula:
NOTE: d: end diastolic; s: end systolic
Left Ventricle Long-axle Diameter
Left Ventricle Area of Long-axle
Ellipse Area (mm
2
, cm
2
,
or dm
2
)
Left Ventricle Long-axle Diameter
Left Ventricle Area of Long-axle
Ellipse Area (mm
2
, cm
2
,
or dm
2
)