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Introduction
The Optimizer 1425A is a self-contained system designed to provide variable flow rates,
vessel orientation and test objects for both Doppler and B-mode ultrasound systems. It con-
sists of a flow system and test instrument with an electronic flow controller. Collectively they
provide a testing source to determine maximum signal penetration, channel isolation or direc-
tional discrimination, and flow rate readout accuracy for various angles and beam directions.
This phantom has pin targets for tests of depth of penetration, axial and lateral resolution and
electronic caliper accuracy, in addition to the attenuation and scattering characteristics of
human soft tissue. Anechoic cystic targets of 2, 4 and 6 mm are embedded at three depths
for image quality analysis. The 5 mm tube used for Doppler tests meets the FDA Doppler
sensitivity recommendations. One vessel simulates a carotid artery while the other is used for
measuring Doppler sensitivity and developing scanner techniques.
Limitations of Use
The 1425A phantom is designed to be used to aid in the Quality Control testing and monitor-
ing of ultrasound instruments only. The 1425A is not to be used to make diagnostic decisions.
Summary of Contents for 1425A
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