Despite recent advances in dental radiography, the diagnostic accuracies for some of the most common dental diseases have not improved significantly, and in some cases remain low. Intraoral x-ray is the most commonly used x-ray diagnostic tool in dental clinics. It however suffers from the typical limitations of a 2D imaging modality including structure overlap. Cone-beam computed tomography (CBCT) uses high radiation dose and suffers from image artifacts and relatively low resolution. The purpose of this study is to investigate the feasibility of developing a stationary intraoral tomosynthesis (s-IOT) using spatially distributed carbon nanotube (CNT) x-ray array technology, and to evaluate its diagnostic accuracy compared to conventional 2D intraoral x-ray. A bench-top s-IOT device was constructed using a linear CNT based X-ray source array and a digital intraoral detector. Image reconstruction was performed using an iterative reconstruction algorithm. Studies were performed to optimize the imaging configuration. For evaluation of s-IOT's diagnostic accuracy, images of a dental quality assurance phantom, and extracted human tooth specimens were acquired. Results show s-IOT increases the diagnostic sensitivity for caries compared to intraoral x-ray at a comparable dose level.
|Original language||English (US)|
|Title of host publication||Medical Imaging 2017|
|Subtitle of host publication||Physics of Medical Imaging|
|Editors||Taly Gilat Schmidt, Joseph Y. Lo, Thomas G. Flohr|
|State||Published - 2017|
|Event||Medical Imaging 2017: Physics of Medical Imaging - Orlando, United States|
Duration: Feb 13 2017 → Feb 16 2017
|Name||Progress in Biomedical Optics and Imaging - Proceedings of SPIE|
|Other||Medical Imaging 2017: Physics of Medical Imaging|
|Period||2/13/17 → 2/16/17|
Bibliographical noteFunding Information:
The project was supported by grants from NIDCR (1R43DE024933-01), A NIH grant from the Clinical and Translational Science Award (CTSA) at UNC (Grant #IHHAR21506), and Xintek.
© 2017 SPIE.
- DIAG (Diagnostic imaging)
- TSY (Tomosynthesis)
- XIM (X-ray imaging)