McDavid W D, Dove S B, Welander U, Tronje G
Department of Dental Diagnostic Science, University of Texas Health Science Center, San Antonio.
Oral Surg Oral Med Oral Pathol. 1993 Apr;75(4):523-7. doi: 10.1016/0030-4220(93)90182-4.
A linear x-ray detector array can be used to perform rotational panoramic radiography provided a technique for data acquisition is used that emulates the dimensional reproduction of a conventional rotational panoramic radiographic system. This may be accomplished with the use of a variable integration time throughout the excursion. The required interval depends upon the scanning geometry, the selected image plane, and the size of pixels used in the digital image. In a prototype device developed around an Orthopantomograph Model OP10 with 0.225 mm square pixels, the integration times range from about 8 milliseconds to 28 milliseconds. An experimental test was performed by radiographing a number of steel spheres positioned at different object depths. Within the limits of experimental error, there was satisfactory agreement between the measured and theoretical magnification.
