7-2 Measurement
7.2 General Measurements
There are measurements for B/B + Color/B + Power mode, M mode and Doppler (PW/CW) mode.
Measures the distance between two points of interest.
Measures the distance between the probe surface and the probing point
along the ultrasound beam.
Measures the angle between two intersecting planes.
Fix a closed ellipse region by two axes perpendicular to each other and
calculate the area of the closed region.
Fix a closed region by trace manually and calculate the area of the closed
region.
Measures the volume of a target.
Measures the lengths of any two lines and calculates the ratio.
Measures the areas of any two regions and calculates the ratio.
Measures the time interval between any two points.
Measures the distance and time between two points and calculates the
slope.
Measures the time of n (n≤8) cardiac cycles and calculates the heart rate in
M mode images.
Calculates the average velocity by measuring the distance and time
between two points.
On PW mode images, one or several Doppler waveforms are traced to
obtain the speed and PG, etc.
On PW mode images in cardiology, one or several Doppler waveforms are
traced to obtain the speed and PG, etc.
Velocity and PG between two peaks on the spectrum are measured to
calculate the RI (resistance index) and PS/ED (peak systolic/end diastolic).
7.3 Advanced Measurements
The categories of the advanced measurements are as follows:
Abdomen measurements - used for measuring abdominal organs (liver, gall bladder and kidney,
etc.) and large abdominal vessels.
OB measurements - used for measuring fetal growth indices (including EFW) as well as GA and
EDD calculations. The fetus can be evaluated through the fetal biophysical profile.
Cardiac measurements - used for left ventricle function measurements and measuring main artery
and vein parameters, etc.
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