Improvement of image characteristics of intraoral and panoramic radiographs by utilizing OCT as a control method

Ralph-Alexandru Erdelyi; Virgil-Florin Duma

doi:10.1117/12.2657252

31 May 2023 Improvement of image characteristics of intraoral and panoramic radiographs by utilizing OCT as a control method

Ralph-Alexandru Erdelyi, Virgil-Florin Duma

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Proceedings Volume 12572, Optical Sensors 2023; 1257207 (2023) https://doi.org/10.1117/12.2657252
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

Radiography is the gold standard imaging technique in dental medicine. While every modern X-ray equipment manufacturer strives to obtain the best possible image characteristics, there are certain limitations for the different types of dental radiographs: panoramic, intraoral, cephalometric, and cone-beam computed tomography (CBCT). Such targeted characteristics include especially resolution, field of view (FOV), and dose radiation, with a clear trade-off between them. The aim of a series of studies we have performed was to address such trade-offs of X-ray imaging using a higher-resolution technique, optical coherence tomography (OCT) [https://doi.org/10.3390/ma13214825, https://doi.org/10.3390/s21134554]. The present work focuses on two of the most common types of dental radiographies (i.e., panoramic and intraoral) obtained with Planmeca X-ray units (Planmeca, Helsinki, Finland). The aim of this work is to present protocol elements and results of their OCT-based optimization. The procedure and working steps are described. Radiographs performed before and after the optimization for patients in a dental clinic in Timisoara, Romania, are presented. Statistical analyses of image characteristics (i.e. contrast, brightness, contrast to noise ratio (CNR) and sharpness) are pointed out, in the trade-off with the radiation dose. The way the ALARA (as-low-as-possible radiation dose) protocol is observed, while improving to the highest possible level image characteristics of considered radiographs is discussed. Limitations that can influence the result of the image characteristics improvement are highlighted. The developed protocol can be applied in every dental clinic or radiology center.

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Ralph-Alexandru Erdelyi and Virgil-Florin Duma "Improvement of image characteristics of intraoral and panoramic radiographs by utilizing OCT as a control method", Proc. SPIE 12572, Optical Sensors 2023, 1257207 (31 May 2023); https://doi.org/10.1117/12.2657252

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KEYWORDS

Optical coherence tomography

Radiography

Panoramic photography

Image quality

X-ray imaging

X-rays

Image processing

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