Accuracy of computer-aided design models of the jaws produced using ultra-low MDCT doses and ASIR and MBIR

Al-Ekrish, Asma’a Abdurrahman; Alfadda, Sara A.; Ameen, Wadea; Hörmann, Romed; Puelacher, Wolfgang; Widmann, Gerlig

doi:10.1007/s11548-018-1809-4

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…The report attributed the increase in collective dose to the increasing availability of CT examinations. Currently, the most effective method for dose optimization is conducted manually, and is labor and time intensive, and the results cannot be generalizable to machines from different manufacturers, different models from the same manufacturer, or even the same model if different software algorithms are used to process the images [ 8 , 9 , 34 , 35 ]. Furthermore, the results of dose optimization studies have quickly become obsolete with the development of more advanced CT machines, even by the same manufacturer.…”

Section: Resultsmentioning

confidence: 99%

Prediction of the as Low as Diagnostically Acceptable CT Dose for Identification of the Inferior Alveolar Canal Using 3D Convolutional Neural Networks with Multi-Balancing Strategies

et al. 2023

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Ionizing radiation is necessary for diagnostic imaging and deciding the right radiation dose is extremely critical to obtain a decent quality image. However, increasing the dosage to improve the image quality has risks due to the potential harm from ionizing radiation. Thus, finding the optimal as low as diagnostically acceptable (ALADA) dosage is an open research problem that has yet to be tackled using artificial intelligence (AI) methods. This paper proposes a new multi-balancing 3D convolutional neural network methodology to build 3D multidetector computed tomography (MDCT) datasets and develop a 3D classifier model that can work properly with 3D CT scan images and balance itself over the heavy unbalanced multi-classes. The proposed models were exhaustively investigated through eighteen empirical experiments and three re-runs for clinical expert examination. As a result, it was possible to confirm that the proposed models improved the performance by an accuracy of 5% to 10% when compared to the baseline method. Furthermore, the resulting models were found to be consistent, and thus possibly applicable to different MDCT examinations and reconstruction techniques. The outcome of this paper can help radiologists to predict the suitability of CT dosages across different CT hardware devices and reconstruction algorithms. Moreover, the developed model is suitable for clinical application where the right dose needs to be predicted from numerous MDCT examinations using a certain MDCT device and reconstruction technique.

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Section: Resultsmentioning

confidence: 99%

Prediction of the as Low as Diagnostically Acceptable CT Dose for Identification of the Inferior Alveolar Canal Using 3D Convolutional Neural Networks with Multi-Balancing Strategies

et al. 2023

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“…Recent literature has shown the potential of ultra-low-dose imaging for detecting the mandibular canal at a CTDIvol of 1.74 mGy, 11 linear measurements for oral implant planning at 0.29 mGy, 12 13 CAD-model fabrication at 0.99 mGy, 14 and image-guided surgery at 0.76 mGy. 15 Furthermore, organ-based dose-modulation reduced the dose to the eye lenses by about 27%-50% at an equivalent CTDIvol, without reducing the image quality.…”

Section: Discussionmentioning

confidence: 99%

Can ultra-low-dose computed tomography reliably diagnose and classify maxillofacial fractures in the clinical routine?

et al. 2023

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Purpose Maxillofacial trauma predominantly affects young adults between 20 and 40 years of age. Although radioprotection is a legal requirement, the significant potential of dose reduction in computed tomography (CT) is still underused in the clinical routine. The objective of this study was to evaluate whether maxillofacial fractures can be reliably detected and classified using ultra-low-dose CT. Materials and Methods CT images of 123 clinical cases with maxillofacial fractures were classified by two readers using the AOCOIAC software and compared with the corresponding results from post-treatment images. In group 1, consisting of 97 patients with isolated facial trauma, pre-treatment CT images at different dose levels (volumetric computed tomography dose index: ultra-low dose, 2.6 mGy; low dose, <10 mGy; and regular dose, <20 mGy) were compared with post-treatment cone-beam computed tomography (CBCT). In group 2, consisting of 31 patients with complex midface fractures, pre-treatment shock room CT images were compared with post-treatment CT at different dose levels or CBCT. All images were presented in random order and classified by 2 readers blinded to the clinical results. All cases with an unequal classification were re-evaluated. Results In both groups, ultra-low-dose CT had no clinically relevant effect on fracture classification. Fourteen cases in group 2 showed minor differences in the classification code, which were no longer obvious after comparing the images directly to each other. Conclusion Ultra-low-dose CT images allowed the correct diagnosis and classification of maxillofacial fractures. These results might lead to a substantial reconsideration of current reference dose levels.

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“…1). [26,27]; Herstellung von CAD-Modellen 0,99 mGy [28]; und Computer-assistierte Chirurgie 0,76 mGy [29]. Die kontinuierliche Weiterentwicklung der Computertomografie u. a. mit photonzählenden Detektoren lässt auf weitere Dosisreduktionen hoffen.…”

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Widmann¹,

Torbica²,

Verius³

et al. 2021

ZWR - Das Deutsche Zahnärzteblatt

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Accuracy of computer-aided design models of the jaws produced using ultra-low MDCT doses and ASIR and MBIR

Abstract: When MDCT is used for CAD models of the jaws, dose reductions of 86% may be possible with FBP, 91% with ASIR 50, and 97% with ASIR 100. Analysis of the stability and accuracy of CAD/CAM surgical guides as directly related to the jaws is needed to confirm the results.

Cited by 8 publications

References 19 publications

Prediction of the as Low as Diagnostically Acceptable CT Dose for Identification of the Inferior Alveolar Canal Using 3D Convolutional Neural Networks with Multi-Balancing Strategies

Prediction of the as Low as Diagnostically Acceptable CT Dose for Identification of the Inferior Alveolar Canal Using 3D Convolutional Neural Networks with Multi-Balancing Strategies

Can ultra-low-dose computed tomography reliably diagnose and classify maxillofacial fractures in the clinical routine?

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