Abstract
In this paper the relationship between image noise in conventional thorax radiographs and the diagnosis of lung nodules is investigated. A method is presented which produces radiographs with different image noise content. Normal radiographs were digitized with high resolution, nodules with a size of 10 mm were simulated and thereafter placed into the digital radiographs. From each digital image a second image was produced by using digital image processing methods in order to increase the Wiener spectrum. A laser printer was used to copy the images, those with and those without the additional noise, in original size on photographic film. The visual perception of the lung nodules was investigated by means of the ROC method. A group of 16 radiologists diagnosed the nodules. The evaluation shows that the image noise is far less important for the detectability of the nodules than the anatomical „background structure”. Despite a significant increase of image noise the diagnostic performance did not change.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
