title: A novel processing artefact.
abstract: A processing artefact is described that is similar in appearance to the tractor-tread (or herringbone) pattern seen on an intra-oral dental radiograph that has been exposed the wrong way round in the mouth.
authors.forename: N J
authors.initials: NJ
authors.lastname: Serman
mesh_terms: D003951:Diagnostic Errors; D006801:Humans; D007091:Image Processing, Computer-Assisted; D011861:Radiography, Dental / Q000009:adverse effects*