Dental age estimation of living persons: Comparison of MRI with OPG

Baumann, Pia; Widek, Thomas; Merkens, Heiko; Boldt, Julian; Petrovic, Andreas; Urschler, Martin; Kirnbauer, Barbara; Jakse, Norbert; Scheurer, Eva

doi:10.1016/j.forsciint.2015.06.001

Cited by 50 publications

(41 citation statements)

References 18 publications

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“…This corresponds to findings of other research groups (Baumann et al, 2015, Guo et al, 2014, Ottow et al, 2014. The proposed imaging protocol will be used in further research to study its advantages compared to the evaluation of third molars on panoramic radiographs.…”

Section: Annals Of Human Biologysupporting

confidence: 92%

“…However, clinical studies using these sequences did not focus on root apices or third molars. (Baumann et al, 2015). In both sequences the resolution was 0.6 x 0.6 x 1.0 mm³.…”

Section: Annals Of Human Biologymentioning

confidence: 99%

“…The proposed imaging protocol will be used in further research to study its advantages compared to the evaluation of third molars on panoramic radiographs. Baumann et al stated that MRI seems to be equally suited for dental age estimation as panoramic radiographs (Baumann et al, 2015). Moreover it has to be studied whether MR images in all planes are necessary or if images in one plane would suffice.…”

Section: Annals Of Human Biologymentioning

confidence: 99%

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Magnetic resonance imaging of third molars: developing a protocol suitable for forensic age estimation

Tobel

Hillewig

Bogaert

et al. 2016

Annals of Human Biology

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Section: Annals Of Human Biologysupporting

confidence: 92%

“…However, clinical studies using these sequences did not focus on root apices or third molars. (Baumann et al, 2015). In both sequences the resolution was 0.6 x 0.6 x 1.0 mm³.…”

Section: Annals Of Human Biologymentioning

confidence: 99%

Section: Annals Of Human Biologymentioning

confidence: 99%

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Magnetic resonance imaging of third molars: developing a protocol suitable for forensic age estimation

Tobel

Hillewig

Bogaert

et al. 2016

Annals of Human Biology

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“…Due to the importance of the age feature, some studies of age estimation have been conducted using MRI scans in recent years [30–32]. The research has shown that it is feasible and effective to noninvasively estimate brain age using MRI scans.…”

Section: Introductionmentioning

confidence: 99%

Dependency criterion based brain pathological age estimation of Alzheimer’s disease patients with MR scans

Liu

Wang

et al. 2017

BioMed Eng OnLine

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ObjectivesTraditional brain age estimation methods are based on the idea that uses the real age as the training label. However, these methods ignore that there is a deviation between the real age and the brain age due to the accelerated brain aging.MethodsThis paper considers this deviation and obtains it by maximizing the correlation between the estimated brain age and the class label rather than by minimizing the difference between the estimated brain age and the real age. Firstly, set the search range of the deviation as the deviation candidates according to the prior knowledge. Secondly, use the support vector regression as the age estimation model to minimize the difference between the estimated age and the real age plus deviation rather than the real age itself. Thirdly, design the fitness function based on the correlation criterion. Fourthly, conduct age estimation on the validation dataset using the trained age estimation model, put the estimated age into the fitness function, and obtain the fitness value of the deviation candidate. Fifthly, repeat the iteration until all the deviation candidates are involved and get the optimal deviation with maximum fitness values. The real age plus the optimal deviation is taken as the brain pathological age.ResultsThe experimental results showed that the separability of the samples was apparently improved. For normal control- Alzheimer’s disease (NC-AD), normal control- mild cognition impairment (NC-MCI), and mild cognition impairment—Alzheimer’s disease (MCI-AD), the average improvements were 0.164 (31.66%), 0.1284 (34.29%), and 0.0206 (7.1%), respectively. For NC-MCI-AD, the average improvement was 0.2002 (50.39%). The estimated brain pathological age could be not only more helpful for the classification of AD but also more precisely reflect the accelerated brain aging.ConclusionIn conclusion, this paper proposes a new kind of brain age—brain pathological age and offers an estimation method for it that can distinguish different states of AD, thereby better reflecting accelerated brain aging. Besides, the brain pathological age is most helpful for feature reduction, thereby simplifying the relevant classification algorithm.

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“…In spite of its wide use in general medicine, there are as yet only a few applications for dentistry, although recent years have seen increasing interest in MRI as a reliable imaging method in dentistry, suggesting that it could become an alternative to CBCT and CT scans in third molar evaluation. [11][12][13][14] The aim of this retrospective analysis was to evaluate the assessment quality of MRI compared to panoramic radiography (PR) in impacted and partially impacted lower third molars and to assess whether dental MRI is a potential alternative to CBCT and CT for advanced radiological preoperative assessment.…”

mentioning

confidence: 99%

Assessment of impacted and partially impacted lower third molars with panoramic radiography compared to MRI—a proof of principle study

Kirnbauer

Jakse

Rugani

et al. 2018

Dentomaxillofacial Radiology

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Dental age estimation of living persons: Comparison of MRI with OPG

Cited by 50 publications

References 18 publications

Magnetic resonance imaging of third molars: developing a protocol suitable for forensic age estimation

Magnetic resonance imaging of third molars: developing a protocol suitable for forensic age estimation

Dependency criterion based brain pathological age estimation of Alzheimer’s disease patients with MR scans

Assessment of impacted and partially impacted lower third molars with panoramic radiography compared to MRI—a proof of principle study

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