The cadmium telluride photon counting sensor in panoramic radiology: gray value separation and its potential application for bone density evaluation

Langlais, Robert P.; Katsumata, Akitoshi; Naidoo, Sudeshni; Ogawa, Kōichi; Fukui, Tsuguya; Shimoda, Shinji; Kobayashi, Kaoru

doi:10.1016/j.oooo.2015.07.002

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…This in turn enables a more precise diagnosis and a further reduction in the radiation dose to the patient with the same image quality. Another application of the spectral information can be to identify dental restorative dental materials [ 17 ] or to assess the bone mineral density of patients [ 18 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Spectral X-Ray Imaging for Panoramic Dental Images Based on a Simulation Framework

Berthe,

Kolb,

Rabi

et al. 2024

J Digit Imaging. Inform. med.

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Modern photon counting detectors allow the calculation of virtual monoenergetic or material decomposed X-ray images but are not yet used for dental panoramic radiography systems. To assess the diagnostic potential and image quality of photon counting detectors in dental panoramic radiography, ethics approval from the local ethics committee was obtained for this retrospective study. Conventional CT scans of the head and neck region were segmented into bone and soft tissue. The resulting datasets were used to calculate panoramic equivalent thickness bone and soft tissue images by forward projection, using a geometry like that of conventional panoramic radiographic systems. The panoramic equivalent thickness images were utilized to generate synthetic conventional panoramic radiographs and panoramic virtual monoenergetic radiographs at various energies. The conventional, two virtual monoenergetic images at 40 keV and 60 keV, and material-separated bone and soft tissue panoramic equivalent thickness X-ray images simulated from 17 head CTs were evaluated in a reader study involving three experienced radiologists regarding their diagnostic value and image quality. Compared to conventional panoramic radiographs, the material-separated bone panoramic equivalent thickness image exhibits a higher image quality and diagnostic value in assessing the bone structure $$\left(p<.001\right)$$ p < . 001 and details such as teeth or root canals $$\left(p<.001\right)$$ p < . 001 . Panoramic virtual monoenergetic radiographs do not show a significant advantage over conventional panoramic radiographs. The conducted reader study shows the potential of spectral X-ray imaging for dental panoramic imaging to improve the diagnostic value and image quality.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Spectral X-Ray Imaging for Panoramic Dental Images Based on a Simulation Framework

Berthe,

Kolb,

Rabi

et al. 2024

J Digit Imaging. Inform. med.

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“…dentin) basis material image might be possible. It was attempted on (Langlais et al 2015) directly from the count data, but was too unstable, one possible explanation being the soft tissue background. Our algorithm takes into account the spectral response and the material decomposition yields quantitative line-integral values which might make it more suitable for this task, but further investigation is required.…”

Section: Discussionmentioning

confidence: 99%

“…One way to do spectral panoramic x-ray imaging is to calculate the ratio of bins during imaging and compare that ratio to one obtained from reference phantom scan (Fukui et al 2015, Langlais et al 2015. However, the output of this algorithm is one unitless number i.e.…”

Section: Introductionmentioning

confidence: 99%

Spectral photon counting for panoramic dental imaging

Somerkivi

Sellerer

Pantsar

et al. 2023

Biomed. Phys. Eng. Express

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Panoramic x-ray imaging is a versatile, low-dose imaging tool, which is routinely used for dental applications. In this work, we explore a further improvement of the concept by introducing recently developed spectral photon-counting detector technology into a conventional panoramic imaging unit. In addition we adapt spectral material decomposition algorithms to panoramic imaging needs. Finally, we provide first experimental results, demonstrating decomposition of an anthropomorphic head phantom into soft tissue and dentin basis material panoramic images, while keeping the noise level acceptable using regularization approaches. The obtained results reveal a potential benefit of spectral photon-counting technology also for dental imaging applications.

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Medical Applications of II-VI Semiconductor-Based Radiation Detectors

Vatavu¹

2023

Handbook of II-VI Semiconductor-Based Sensors and Radiation Detectors

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The cadmium telluride photon counting sensor in panoramic radiology: gray value separation and its potential application for bone density evaluation

Cited by 5 publications

References 16 publications

Evaluation of Spectral X-Ray Imaging for Panoramic Dental Images Based on a Simulation Framework

Evaluation of Spectral X-Ray Imaging for Panoramic Dental Images Based on a Simulation Framework

Spectral photon counting for panoramic dental imaging

Medical Applications of II-VI Semiconductor-Based Radiation Detectors

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