title: The parallel stripes mystery.
abstract: A series of artefacts seen on intra-oral radiographs are described. These have been shown to be caused by contamination from fixing solution on the clips used to hold the films during processing. Thorough cleaning of these clips between uses prevented recurrence of these artefacts.
authors.affiliation: Dental School, Newcastle upon Tyne.
authors.forename: N D
authors.initials: ND
authors.lastname: Robb
authors.forename: J M
authors.initials: JM
authors.lastname: Howat
mesh_terms: D016477:Artifacts; D004866:Equipment Contamination; D006801:Humans; D011861:Radiography, Dental / Q000295:instrumentation*; D012996:Solutions
chemical_list: D012996:Solutions