Description
1
1
Introduction
Description
The Doppler 403
™
Flow Phantom, Model 1425B, is a self-contained Doppler flow and B-Mode QA
test system. The phantom provides streamlined fluid flow at variable rates in a continuous or pulsed
mode. The phantom has horizontal and diagonal vessel orientations, and includes test objects for
both Doppler and B-mode assessments. As a B-Mode phantom the Doppler 403 Flow Phantom
meets all ACR, and AIUM requirements for acceptance testing as well as for biannual and annual
system performance evaluation and routine quality control tests.
The phantom background material is Gammex’s patented Multi-Frequency HE Gel
™
, a tissue-
mimicking background used to evaluate image uniformity, detect dead transducer elements, and
assess maximum penetration depth. Carefully placed targets within the gel measure axial and
lateral resolution, electronic caliper distance accuracy, and dead zone. Grey Scale targets are set
at -6 dB, and +6 dB relative to the background material, with equivalent attenuation properties.
Anechoic cylinder targets of 2, 4, and 6 mm diameters are embedded at three depths; a 10 mm
anechoic target is provided for image quality analysis. All phantom material is fully compatible with
the latest tissue harmonic imaging modes and technology, including a non-adipose tissue B/A value
and frequency-dependent attenuation.
As a flow phantom the Doppler 403 consists of a low echogenicity fluid flow system and an electronic
flow controller. Together they provide a testing source to determine maximum signal penetration,
channel isolation or directional discrimination, and flow rate readout accuracy for various angles and
beam directions. The horizontal segment of the vessel simulates a carotid artery and the diagonal
segment is used for measuring Doppler sensitivity and developing scanner techniques.
Parts
Parts included with the Doppler 403 Flow Phantom.
Figure 1-1. Doppler 403 Flow Phantom and Sono Transducer Holder Parts
Part No.
Description
805660 or
805661
Doppler 403 Flow Phantom assembly, 0.5 attenuation
Doppler 403 Flow Phantom assembly, 0.7 attenuation
xxxxxx
Power supply for charging Li-Ion battery (not shown)
xxxxxx
Power supply pouch for power supply and cable storage and portability (not shown)
xxxxxx
Test Data Sheets for recording quality assurance test results (included on memory stick or CD
008315
Doppler 403 Flow Phantom User’s Guide
(this guide, not shown)
xxxxxx
Sono Transducer Holder for Doppler Flow Phantom (includes cable holder)
Holds an ultrasound transducer in a precise location for repeatable quality assurance tests
007578-04
Sono Transducer Holder User’s Guide
(included on memory stick or CD)
Doppler 403 Flow Phantom
Sono Transducer Holder
