Measurements
13-2
13.2 General Measurements
13.2.1 General Measurements – 2D
The 2D general measurement consists of B, Color and Power/DirPower general
measurements. The measurements listed below can be performed in 2D:
Measurement tool Function
Distance The distance between two points of interest.
Depth The distance between transducer surface and the probing point
along ultrasound beam.
Angle The angle between two intersected planes.
Area The area and / or perimeter of a closed region.
Volume The volume of a target.
Cross line The length of two line segments, which are perpendicular to each
other.
Parallel line The distance between each pair of parallel lines in a sequence.
Tracing length The length of a curve.
Length ratio The lengths of any two lines and the calculated ratio.
Area ratio The areas of any two regions and the calculated ratio.
B histogram The grayscale distribution of ultrasonic echo signals in a closed
region
B profile The grayscale distribution of ultrasonic echo signals across a
line
Color speed Color flow speed (only valid for Color mode)
VF Diam To measure vascular diameter
13.2.2 General Measurements - M Mode
The measurements listed below can be performed in the M Mode:
Measurement tool Function
Distance The vertical distance between two points.
Time The time interval between any two points.
Slope The slope is calculated by means of measuring the distance and
time between two points.
Heart rate In the M heart beat image, n intervals (n≤8) are measured to
calculate an M Mode derived HR value in Beats Per Minute (BPM).
Velocity After the distance and time between two points are measured, the
average velocity can be calculated between the two points.
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