CT reconstruction algorithm for a dental panoramic X-ray unit

M. D. Lee; R. G. Waggener; W. D. McDavid; S. B. Dove; U. Welander; G. Tronje

doi:10.1088/0031-9155/37/12/001

CT reconstruction algorithm for a dental panoramic X-ray unit

M. D. Lee, R. G. Waggener, W. D. McDavid, S. B. Dove, U. Welander, G. Tronje

Comprehensive Dentistry

Research output: Contribution to journal › Article › peer-review

Abstract

A variable Jacobian and weighted back projection algorithm, used for medical CT, was adapted to perform CT reconstructions on data obtained with a dental panoramic X-ray unit. A detector array, fitted to the unit for the purpose of acquiring digital panoramic radiographs, was used to collect the data. Compensations were made for the incomplete (230') rotation of the panoramic X-ray unit, the non-fixed centre of rotation, the irregular rotation of the X-ray target and detector, and the resulting variances in magnification. The algorithm was tested on mathematically simulated phantoms and on acquired data. Reconstruction of simulated data proved the success of the algorithm. Real data reconstructions showed some defects as a result of inaccuracies in quantifying the experimental panoramic device.

Original language	English (US)
Article number	001
Pages (from-to)	2161-2174
Number of pages	14
Journal	Physics in Medicine and Biology
Volume	37
Issue number	12
DOIs	https://doi.org/10.1088/0031-9155/37/12/001
State	Published - Dec 1 1992

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging

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