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Constancy Test
Quality Assurance
F.3-20
SOMATOM Spirit
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Performing the homogene-
ity test
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With this test, you measure the homogeneity of the CT values in
five regions of the water phantom.
F.3
F.3
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Press the
Start
key on the control box.
Scanning is started.
F.3
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After the previous test has been completed, the
Homogeneity
test is started automatically.
F.3
An image of the water phantom is recorded. 5 ROIs are marked
in the image, one central and four peripheral.
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In addition to the ROIs, the mean values and standard deviations
of the CT values are displayed.
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The difference between the mean values of the central ROI and
the peripheral ROIs is displayed.
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F.3
Содержание SOMATOM Spirit
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Страница 55: ...Safety Information about Personal Safety 0 0 04 2012 0 0 A 2 130 0 A 2 ...
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Страница 436: ...0 0 0 0 Low Contrast Test Optional Quality Assurance F 4 12 SOMATOM Spirit0 0 ...
Страница 439: ...Quality Assurance Camera Test 0 0 04 2012 0 0 F 5 30 0 Examples of test images F 5 F 5 ...
Страница 445: ...Quality Assurance Constancy Test of the Monitor 0 0 04 2012 0 0 F 6 50 0 Examples of test images F 6 F 6 ...
Страница 450: ...0 0 0 0 Technical Specifications G 2 SOMATOM Spirit0 0 ...
Страница 452: ...0 0 0 0 Standards and Statutory Regulations H 2 SOMATOM Spirit0 0 ...
Страница 454: ...0 0 0 0 Forms J 2 SOMATOM Spirit0 0 ...
Страница 455: ...0 0 04 2012 0 0 K 10 0 APPENDIX J 0 K DIP Report For further information please refer to System Owner Man ual K 0 ...
Страница 456: ...0 0 0 0 DIP Report K 2 SOMATOM Spirit0 0 ...
Страница 458: ...0 0 0 0 Location of Labels L 2 SOMATOM Spirit0 0 ...