Purpose: The purpose of this study was to investigate the effect of head position changes on
vertical and horizontal magnification in dental panoramic radiographs. Materials and …

The purpose of this study was to investigate how image magnification in dental panoramic
radiography is influenced by object position. Five metal balls (4 mm in diameter, 2 for the …

Results The cross-correlation coefficients of the occlusal plane profiles showed the greatest
change in the chin tipped high images and became negatively correlated from 6 image …

Materials and methods Twenty radiographs taken with each apparatus from a human dry
skull were scanned. Hori-zontal, vertical and angular dimensions were measured on the …

Materials and Methods: In this descriptive analytical study, 10 dry human skulls were marked
by gutta-percha in different horizontal and vertical dental areas. The radiographs were then …

New electronic imaging capabilities afforded by the use of linear charged-couple device
arrays allow acquisition of three-dimensional information through simultaneous recordings …

Faulty radiographs have poor diagnostic quality, and repetition of such poor-quality
radiographs leads to increased patient exposure to radiation. Since digital panoramic …

Magnification factors (VF) in relation to various head positions were evaluated for a digital
panoramic radiography machine (Orthophos DS, Sirona) by means of a dry skull phantom …

Purpose This study assessed the accuracy of linear and angular measurements on
panoramic radiographs taken at different positions in vitro. Materials and Methods Two …

Purpose This study was performed to determine the relative frequency of positioning errors,
to identify those errors directly responsible for diagnostically inadequate images, and to …