title: Comparison of diagnostic accuracy of digital imaging by using CCD and CMOS-APS sensors with E-speed film in the detection of periapical bony lesions.
abstract: OBJECTIVE
  The purpose of this study was to compare E-speed Plus film and digital imaging with a charge-coupled device (CCD) sensor and a complementary metal-oxide semiconductor active pixel sensor (CMOS-APS) in the detection of periapical bone lesions.
  
  
  METHODS
  Periapical lesions were created in the cortical and trabecular bone of 10 dried human mandibles. Seventy radio-graphic images and 140 digital images were evaluated by 6 endodontists and 2 radiologists. Receiver operating characteristics curves and analysis of variance were used for statistical analysis.Results. No statistically significant differences were found between film, CCD, and CMOS-APS systems. Lesion detection occurred with significantly greater accuracy in cortical bone than in trabecular bone, as well as when the cortical plate was involved.
  
  
  CONCLUSIONS
  That no differences were found between the two sensors lends support for the use of CMOS-APS sensors, which require less system power and may have longer life spans than CCD sensors. Digital imaging required 50% less radiation than film to obtain the same diagnostic information.
authors.affiliation: Department of Diagnostic and Surgical Sciences, School of Dentistry, University of Detroit, Mercy,USA.
authors.forename: S B
authors.initials: SB
authors.lastname: Paurazas
authors.forename: J R
authors.initials: JR
authors.lastname: Geist
authors.forename: F E
authors.initials: FE
authors.lastname: Pink
authors.forename: M M
authors.initials: MM
authors.lastname: Hoen
authors.forename: H R
authors.initials: HR
authors.lastname: Steiman
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D000539:Alveolar Process / Q000000981:diagnostic imaging*; D000704:Analysis of Variance; D004708:Endodontics; D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D008336:Mandibular Diseases / Q000000981:diagnostic imaging*; D010483:Periapical Diseases / Q000000981:diagnostic imaging*; D012372:ROC Curve; D011829:Radiation Dosage; D019252:Radiography, Dental, Digital / Q000295:instrumentation / Q000379:methods*; D011871:Radiology; D014092:Tooth Root / Q000000981:diagnostic imaging; D014962:X-Ray Film