effect of image compression of direct digital lateral cephalograms on the identifi cation of cephalometric points

background:   fl uence of image compression on the identi fi   materials and methods:   fi   fi   fi   results:   conclusion:   fi   fi   le format for the compression of digital lateral cephalograms. cation of cephalometric points compared with the dicom format. jpeg2000 is a reliable   jpeg2000 images of lateral cephalograms with quality factors 85, 75, and 60 did not demonstrate any alterations in the identi   the results did not demonstrate any statistically signi fi cant difference in the identi fi cation   of the eight cephalometric points between the dicom images and the jpeg2000 quality factors 85, 75, and 60. cance level of 5%. cant difference in the location of cephalometric points between each group of images. all tests were applied at a signi   ed on each   image by a professional, using the x-y coordinate system. analysis of variance (anova) was applied to investigate if there was a statistically signi in this analytical-descriptive study, 19 direct digital lateral cephalograms   saved in dicom format were used. they were converted to joint photographic experts group (jpeg) 2000 format with quality factors 85, 75, and 60 adding up to 76 images (dicom, jpeg 85, 75, and 60). the images were randomized and eight cephalometric points were identi cation of cephalometric points on direct digital   lateral cephalogram images, compared with the digital imaging and communications in medicine (dicom) format. with increase of digital imaging, the need for storage space and transmission speed key words: cephalometry, data compression, dental, digital, radiographs   also increases. compressed images need less storage space and decrease the transmission time. however, compression could compromise image quality. the aim of this study was to evaluate the in