title: Tic-tac-toe.
authors.affiliation: Brookwood/Leeds Family Health Center, Ala., USA.
authors.forename: K
authors.initials: K
authors.lastname: Geissler
authors.forename: D E
authors.initials: DE
authors.lastname: Collins
mesh_terms: D016477:Artifacts; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D011856:Radiographic Image Enhancement