Doppler Flow Test System

The Doppler Flow Test System 1425A LE tests both Doppler and B-mode ultrasound systems using one uniquely designed unit. A low echo matrix is combined with strategically placed line reflectors and anechoic cyst targets at 2, 4, and 6 mm depths.

Two 5 mm vessels are incorporated into the system to meet with FDA Doppler sensitivity recommendations. One vessel is parallel to the scan plan at 2 cm, replicating a carotid artery. The other vessel descends 45 degrees from the surface to test Doppler sensitivity and to train different scanner techniques. All of this is combined with a flow controller with microprocessor that has a range of 1 to 12.5 ml/sec within 3% FS accuracy.

You can access five programmable test programs and five preset pulse flow patterns with the easy-to-use display panel. This allows for accurate reproducible testing time after time.

By combining the flow system, phantom, and electronic flow controller into a self-contained dual purpose Doppler Flow Test System, the 1425A LE is an excellent instrument for performing a multitude of functions. Scanner selection, quality control testing, training, and research can all be performed using this multi-faceted ultrasound tool.

All of the following quality indicators can be measured in real time:

Maximum signal penetration
Channel isolation or directional discrimination
Registration accuracy of duplex sample gates and similarities between B-mode and color flow images
Flow rate readout accuracy for various angles, beam directions and operating modes

The Doppler Flow Test System 1425A LE is not only one of the most versatile dual-purpose systems available, but it’s completely portable as well. This makes our Doppler Flow System a must-have for your ultrasound quality control.

1425A-LE-0.5 Doppler Flow Test System, 0.5 Attenuation

1425A-LE-0.7 Doppler Flow Test System, 0.7 Attenuation

Doppler Flow Test System

SPECIFICATIONS

Tissue Mimicking Material
Speed of sound 1540 ±10 m/s Attenuation 0.5 or 0.7 ±0.05 dB/cm/MHz

Targets
Cyst speed of sound 1540 ±10 m/s Cyst attenuation 0.05 ±0.01 dB/cm/MHz
Diameter of nylon lines 0.1 mm (0.004 in)
Size tolerance ±5% Location tolerance . . . . . . ±0.1 mm (0.004 in)

Vessels
Size 5 mm diameter
Location 2 cm below surface; 2 to 16 cm at 40°angle

Blood Mimicking Fluid
Density 1.03 g/cc
Speed of sound 1550 ±10 m/sec Scatter size 4.7 micrometers average

Electronic Flow Control System
Constant flow mode 1 to 12.5 ml/sec ±3%
Calculated velocities 10-110 cm/sec Pulsatile flow mode 5 programmed waveforms
Container Size 40.6 x 24.8 x 40 cm (16 x 9.75 x 15.75 in)
Weight 10.4 kg (23 lbs)

All acoustic measurements at 4.5 MHz, 22°C