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NewTom VG User Manual rev 4.0 - Image Works

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Quality assurance<br />

B<br />

A<br />

C<br />

Place the QA phantom on its base in a central<br />

position.<br />

In order to facilitate the correct positioning of the<br />

phantom, set up the head support being used the<br />

keys of the head support keyboard (make reference<br />

to the Par. “4.4.2 - Controls on the head support<br />

keyboard”).<br />

Ruler A (Height) position “QA”<br />

Rulers B and C (width, depth) default position (“D”)<br />

1a scout view<br />

The first displayed scout view represents the<br />

phantom as seen by the scanner in the start position.<br />

Using this reference one can center the phantom in<br />

the direction perpendicular to the rotating arm.<br />

Repeat this step as many times as necessary (the<br />

aluminium cylinder should appear between the<br />

vertical sketched red lines and the inner small<br />

spheres to the QA should be crossed from the<br />

horizontal sketched red lines).<br />

Frontally center the QA phantom using the<br />

information from the second scout view, which is<br />

acquired as the rotating arm is in a 90 degrees<br />

position.<br />

It is now possible to perform the scan of the<br />

phantom.<br />

For more details about the QA scan please refer to<br />

the "Software <strong>Manual</strong>".<br />

2a scout view<br />

Rev. 1.0 - 02/15/2009 Page 37 of 72

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