Fluke Biomedical 84-350 User Manual

Page 9

Introduction

Testing Procedures

1-5

Optimize imaging conditions for anechoic masses through adjustment of TGC, gain, output, focal depth,
etc., and record settings. Image each set of targets and determine the diameter and/or depth at which the
masses can no longer be faithfully resolved.

Volumetric Measurements

Each phantom will identify the specific size dimensions and volume of the embedded test object. Use
standard measurement procedures and compare results with known values.

Time-gain properties and sector scanner errors can
be evaluated using the vertical plane target in
accordance with suggested AIUM techniques. For
targets with minimum scattering, lower gain levels
can be used, however, higher gain settings enable
evaluation at more clinical-type settings. When
evaluating any machine, settings should be
recorded and remain consistent over time. For
further instruction on measuring performance, refer
to Standard Methods for Measuring Performance of
Pulse-Echo Ultrasound Imaging Equipment AIUM
Standards Committee, July, 1990.

NOTE