Brilliance 64 CT Model Number 728231 Product Usage: Computed Tomography X-ray systems intended to product cross-sectional images of the body by computer reconstruction of X-ray transmission data taken at different angles and planes.

Reason: The infant performance test did not meet the test specification for the Infant Head Uniformity test with High Resolution. As a result, when the user performs High Resolution head scans, the reconstructed images may exhibit degraded image quality manifested as non-uniformity of the image, CT number shift greater than 5 Hounsfield units, and reduction in gray/white matter differentiation. The issue is most sever in the High Resolution mode, and the factory reference pediatric scan protocols are set to High Resolution default. Adults head scans have a factory reference protocol that defaults to standard resolution which doesn't experience the issue.

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