Hyperacute onset difficulty breathing post chest pain.
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Heart size at the upper limits of normal allowing for AP projection. Tracheostomy appropriately positioned. Upper lobe vascular redistribution due to supine position. No consolidation or supine pneumothorax. Bones and soft tissues unremarkable.
Spoke and hub kind artefact due to exposure of upside-down computed photostimulable phosphor cassette.
Imaging of a computed radiographic photostimulable phosphor cassette upside down results spoke like appearance. The radio-opaque lines running diagonal towards the centre of the image represent the casing that holds the phospher plate.
Often radiographers will notice this and repeat the image, however, some monitors may make it hard to appreciate, it is worth contacting the radiographer to clarify/alert the diagnostic radiographer.