Borders must be visible, lines Weekly Display the TG18-QC test pattern. Control chart showing: Monitor QC (monitors used must be straight, squares must Ensure viewing conditions are acceptable. Date test performed. for appear square, the ramp bars Use window-width set to maximum and Person performing test. interpretation should appear continuous without window-level set to half of maximum. and attached to any contour lines, there should be Monitor identification. the acquisition no smearing or bleeding at Check visibility and distortion of several Monitor settings (window workstation) transitions, all corner items used for evaluating the quality of and level). patches must be visible, squares the image. of different shades from black to A record of at least the last Check for disturbing artefacts. white must be distinct, all high 25 results. contrast resolution patterns and Baseline values. two low contrast patterns must be visible in all four corners and in Remarks regarding corrective the centre, the 5% and 95% pixel actions and baseline changes. value squares must be clearly visible, pattern should be centred in the active area and no disturbing artefacts should be visible on the displayed TG18-QC test pattern. The number of letters visible in the phrase Control” for “Quality the dark, mid-grey and light renditions should be ≥11.
Monitor QC (monitors used for interpretation and attached to the acquisition workstation) Borders must be visible, lines must be straight, squares must appear square, the ramp bars should appear continuous without any contour lines, there should be no smearing or bleeding at transitions, all corner patches must be visible, squares of different shades from black to white must be distinct, all high contrast resolution patterns and two low contrast patterns must be visible in all four corners and in the centre, the 5% and 95% pixel value squares must be clearly visible, pattern should be centred in the active area and no disturbing artefacts should be visible on the displayed TG18-QC test pattern. The number of letters visible in the phrase “Quality Control” for the dark, mid-grey and light renditions should be ≥11. Weekly Display the TG18-QC test pattern. Ensure viewing conditions are acceptable. Use window-width set to maximum and window-level set to half of maximum. Check visibility and distortion of several items used for evaluating the quality of the image. Check for disturbing artefacts. Control chart showing: Date test performed. Person performing test. Monitor identification. Monitor settings (window and level). A record of at least the last 25 results. Baseline values. Remarks regarding corrective actions and baseline changes.
BSA%20NAS%20com_endorsed%20by%20SCoS%20Oct.docx