Gammex 403 LE Panduan Pengguna - Halaman 7

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Halaman Cetak

Evaluating the Phantom

Remember
•
The phantom comes ready to scan. Do not peel off surface
material.
•
Never press the transducer into the scanning surface.
•
Always clean and dry the scanning surface after each use. Never
leave coupling gel or water on the scanning surface for more than a
few hours.
•
Do not use mineral oil, baby oil or lanolin-based gels as a coupling
medium.
A 4.5MHz probe will provide a good overall view of the phantom for this demonstration.
1.
Turn the handle out of the way and slide the cover off the phantom.
2.
To couple with water, fill the dam with distilled water. For a better image quality,
use gel.
3.
Rest the transducer on the scanning surface. Adjust the scanner to display the
full depth of the phantom.
You may notice that the tissue echoes near the bottom of the phantom fade into
noise. The depth at which usable echoes disappear is called the depth of
penetration. The depth markers on the phantom label will help you determine
the depths of targets.
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