Imaging Science in Dentistry

  • 제49권1호
  • /
  • Pages.35-43
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  • 2019
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  • 2233-7822(pISSN)
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  • 2233-7830(eISSN)
대한영상치의학회 (Korean Academy of Oral and Maxillofacial Radiology)
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Validation of a low-cost portable 3-dimensional face scanner

  • Liu, Catherine (Paediatric Dentistry Department, Dental Centre, Ground Floor South Wing, St Thomas' Hospital) ;
  • Artopoulos, Andreas (Academic Centre of Reconstructive Science, King's College London Dental Institute)
  • 투고 : 2018.10.10
  • 심사 : 2018.12.15
  • 발행 : 2019.03.31
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초록

Purpose: The goal of this study was to assess the accuracy and reliability of a low-cost portable scanner (Scanify) for imaging facial casts compared to a previously validated portable digital stereophotogrammetry device (Vectra H1). This in vitro study was performed using 2 facial casts obtained by recording impressions of the authors, at King's College London Academic Centre of Reconstructive Science. Materials and Methods: The casts were marked with anthropometric landmarks, then digitised using Scanify and Vectra H1. Computed tomography (CT) scans of the same casts were performed to verify the validation of Vectra H1. The 3-dimensional (3D) images acquired with each device were compared using linear measurements and 3D surface analysis software. Results: Overall, 91% of the linear Scanify measurements were within 1 mm of the corresponding reference values. The mean overall surface difference between the Scanify and Vectra images was <0.3mm. Significant differences were detected in depth measurements. Merging multiple Scanify images produced significantly greater registration error. Conclusion: Scanify is a very low-cost device that could have clinical applications for facial imaging if imaging errors could be corrected by a future software update or hardware revision.

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참고문헌

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  3. Accuracy of Portable Face-Scanning Devices for Obtaining Three-Dimensional Face Models: A Systematic Review and Meta-Analysis vol.18, pp.1, 2021, https://doi.org/10.3390/ijerph18010094
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  5. Integration and Application of Multimodal Measurement Techniques: Relevance of Photogrammetry to Orthodontics vol.21, pp.23, 2021, https://doi.org/10.3390/s21238026