title: An Unusual Cause of the Ring Artifact on Transaxial CT Images.
abstract: Artifacts and image quality are two sides of the same coin. The ring artifact is scanner-based and caused mainly by either a miscalibrated element or a defective element of a detector row. We describe a rare cause of the ring artifact that appeared on a transaxial CT image because of a loose electronic contact. To our knowledge, this particular cause of the ring artifact has not been described in literature.
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, India ashish.kumar.jha.77@gmail.com.
authors.forename: Ashish Kumar
authors.initials: AK
authors.lastname: Jha
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, India.
authors.forename: Nilendu C
authors.initials: NC
authors.lastname: Purandare
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, India.
authors.forename: Venkatesh
authors.initials: V
authors.lastname: Rangarajan
mesh_terms: D016477:Artifacts; D006801:Humans; D007091:Image Processing, Computer-Assisted; D013902:Radiography, Thoracic / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*
keywords: artifact; computed tomography; detector module; motherboard; transaxial image