Measurement 8-3
8.2.3 Doppler General Measurements
Doppler general measurements refer to general measurements on PW/CW-mode images.
The measurements listed below can be performed:
Tools
Function
Time The time interval between any two points.
HR
N intervals (n≤8) are measured to calculate a PW mode derived HR
value in Beats Per Minute (BPM).
D Velocity
On the Doppler mode image, velocity and PG (pressure gradient) of a
point on the Doppler spectrum waveform are measured.
Acceleration
Velocity and time interval between two points are measured to calculate
speed difference and acceleration.
D Trace
On the PW mode image, one or several Doppler waveforms are traced
to obtain speed and PG, etc.
PS/ED
Velocity and PG between two peaks on the Doppler spectrum to
calculate RI (resistance index) and PS/ED (peak systolic/end diastolic).
Blood flow through some vascular cross section per unit time.
8.3 Application Measurement
The system support following measurement types:
Abdomen measurements - Used for measurements of abdominal organs (liver, gall
bladder, pancreas and kidney, etc.) and large abdominal vessels.
OB measurements- Used for measurements of fetal growth indexed (including EFW) as
well as GA and EDD calculations. The fetus can be evaluated through growth graph
analysis and fetal biophysical profile.
Cardiac measurements- Used for left ventricle function measurements and measurements
of main artery and vein parameters, etc.
Gynecology measurements - Used for the uterus, ovary and follicles, etc.
Small Part measurements – Used for small parts such as thyroid.
Urology measurements - Used for prostate, seminal vesicle, renal, adrenal, micturated
and testicle volume.
Vascular measurements – Used for carotid, cerebral, upper and lower extremities vessels,
etc.
Pediatric measurements - Used for hip joint measurement.
Nerve measurements – Used for nerve structure measurements.
Emergency measurements - Used for emergency abdomen, obstetric, superficial etc.
To Next Page
Loading...
