Characterization of the VARIAN<sup><i>®</i></sup>PaxScan 2020+ flat panel detector for quantitative X‐ray imaging

Geser, Federico Alejandro; Chacón, D.; Figueroa, R.; Malano, Francisco; Santibáñez, M.; Valente, M.

doi:10.1002/xrs.2683

Cited by 5 publications

(5 citation statements)

References 18 publications

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“…Como sistema de detección, se utilizó un detector de estado sólido bidimensional flat panel con centelleador de ioduro de cesio (CsI) amorfo marca VARIAN Co. USA., modelo PaxScan 2020+, con un área de adquisición de 20 × 20 cm 2 , y resolución espacial correspondiente a un tamaño de pixel de 200 × 200 µm 2 [8].…”

Section: Montaje Experimentalunclassified

X-Ray Microtomography to Characterize the Root Canal Volume Extracted in Endodontic Instrumentation

Gilli¹,

Mattea²,

Martin³

et al. 2022

AnAFA

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During the last decades, the analytical techniques of X-ray absorption contrast imaging have systematically gained greater relevance, mainly due to the ability to attain non-destructive exploration of the sample interior. The significant improvement in spatial resolution offered by X-ray micro-tomography, as compared to conventional computed tomography, has motivated its insertion in many biomedical fields, among which dentistry stands out. Particularly, for endodontics, microCT appears as a method of remarkable potential interest to study procedures involved in root canal treatments, where one of the main needs is the anatomical characterization of the root canal in the teeth. The present work reports on the adaptation of the microCT equipment of the LIIFAMIRx⃝laboratory at the E. Gaviola Physics Institute, CONICET and UNC, thus allowing to acquire of radiographic images of dental samples of interest, to be later used in the implementation of algorithms, intended to tomographic reconstruction and volume segmentation. As a result, radiographic images of premolar teeth were obtained with good contrast between the different materials present, and three-dimensional representations, whose visualization is comparable with the real samples. Moreover, it was possible to characterize the root canal volume of the tooth both in its natural form and after having undergone the instrumentation process in which the pulp tissue is extracted.

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Section: Montaje Experimentalunclassified

X-Ray Microtomography to Characterize the Root Canal Volume Extracted in Endodontic Instrumentation

Gilli¹,

Mattea²,

Martin³

et al. 2022

AnAFA

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“…Although the detector response function R(E) has been considered as uniform for practical purposes, it is worth remarking that any experimental detector, and particularly the Paxscan 2020 VARIAN digital flat panel, needs to be accurately characterized in terms of quantum efficiency P (E) and modulation transfer function. 24 More realistic approaches are obtained once the detector characteristics are introduced, which is necessary to compare the theoretical with experimental data. A further relevant issue, as mentioned for results summarized in Table 3, is that it should be kept in mind that values in -Table 4 may be interpreted in terms of the corresponding relative proportions.…”

Section: Analytic Estimation Of X-ray Absorption Contrastmentioning

confidence: 99%

Adaptation of a microCT facility for automatic recognition of bioceramic‐based sealers in molar root canals aimed at endodontic treatment quality control

et al. 2021

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Computed tomography (CT) technology has seen tremendous growth since its first medical applications in the early 1970s. Nowadays, high-spatial-resolution digital detectors enable the micro-computed tomography (μCT) technique, which has been introduced to a wide variety of applications, including biomedical sciences like odontological applications. Endodontic treatments stand as one of the most common dental procedures, and the quality of the treatment is essential to prevent and control any potential infection of root canals. This treatment is typically achieved by careful cleaning, shaping, and sealing steps.Often, endodontic treatments fail due to a poor seal, even if a meticulous root canal preparation is carried out. The present work reports on the spectrometric adaptation of a μCT facility for accurate quantification of root canal sealing with bioceramics, aimed at assessing the sealing performance of the new Bio-C Sealer product. A dedicated irradiation setup along with digital image processing techniques have been developed for the accurate and automatic recognition of dental samples root canal anatomy and bioceramic-based sealers. The performance of the proposed approaches has proved to be qualitatively and quantitatively robust for automatic characterization of the endodontic treatment sealing quality, satisfactorily identifying and segmenting canal root, gutta-percha cone, and bioceramics.

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“… Both linear fitting method and quadratic function method demonstrate that with the increasing of delay time, the offset induced by leakage has not strictly proportional to the delay time, and also not strictly increasing according to the form of quadratic function; But the offset caused by leakage increases as the delay time increases. Table 2 pre-offset template is tested about the temperature error correction range, the ideal is to ensure the rapid imaging and at the same time, the 0.5s&5s pre-offset template can be obtained in advance and call the corresponding template according to the actual detector temperature so that the dynamic template can be adjusted to static [6] . A preliminary determination is made on whether the template could become invalid after long time.…”

Section: (A) (B) Figure IV 2sand10sand20s Pre-offset Template (A) 2s Delamentioning

confidence: 99%

Research on Fast Imaging Method of X - Ray Flat Panel Detector Based on Pre - Offset

Fan¹,

Li²,

Ling³

et al. 2017

Proceedings of the 2017 2nd International Conference on Control, Automation and Artificial Intelligence (CAAI 2017)

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Characterization of the VARIAN^®PaxScan 2020+ flat panel detector for quantitative X‐ray imaging

Cited by 5 publications

References 18 publications

X-Ray Microtomography to Characterize the Root Canal Volume Extracted in Endodontic Instrumentation

X-Ray Microtomography to Characterize the Root Canal Volume Extracted in Endodontic Instrumentation

Adaptation of a microCT facility for automatic recognition of bioceramic‐based sealers in molar root canals aimed at endodontic treatment quality control

Research on Fast Imaging Method of X - Ray Flat Panel Detector Based on Pre - Offset

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Characterization of the VARIAN®PaxScan 2020+ flat panel detector for quantitative X‐ray imaging

Cited by 5 publications

References 18 publications

X-Ray Microtomography to Characterize the Root Canal Volume Extracted in Endodontic Instrumentation

X-Ray Microtomography to Characterize the Root Canal Volume Extracted in Endodontic Instrumentation

Adaptation of a microCT facility for automatic recognition of bioceramic‐based sealers in molar root canals aimed at endodontic treatment quality control

Research on Fast Imaging Method of X - Ray Flat Panel Detector Based on Pre - Offset

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Characterization of the VARIAN^®PaxScan 2020+ flat panel detector for quantitative X‐ray imaging