Trade name: Somatom Definition AS. Technical name: CT Scanner. ANVISA registration number: 10345161981. Risk class: III. Affected model: Somatom Definition AS. Serial numbers affected: 64127; 64147; 64584; 64665; 64948; 64981; 64988; 65055; 65160; 65227; 65395; 5405; 65422; 65431; 65552; 65571; 65584; 65585; 65648; 65675; 65682; 65901; 65910; 65950; 65987; 66149; 66397; 66401; 66430; 66459; 66479; 66488; 6492; 66524; 66584; 66586; 66590; 66782