Ghost artefact from service engineer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s Unfors. Also shadow from mis-aligned collimator at chest wall edge (LHS of image). Unknown artefact at right lateral border (Bottom of image).
Equipment involved and any image enhancement applied
GE Senographe DS, RAW Rh/Rh DICOM image.
Cause and/or corrective action
All artefacts removed by flat-fielding for all T/F combinations.