Comparison of the accuracy of voxel based registration and surface based registration for 3D assessment of surgical change following orthognathic surgery

Autor: Almukhtar, A, Ayoub, F, Zuo, X, McDonald, J, Ju, X, Khambay, BS
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Cone beam computed tomography
Image Processing
Radiography
medicine.medical_treatment
Orthognathic surgery
lcsh:Medicine
computer.software_genre
Diagnostic Radiology
Voxel
Medicine and Health Sciences
Postoperative Period
lcsh:Science
Tomography
Orthodontics
Multidisciplinary
Radiology and Imaging
Orthognathic Surgery
Digital imaging
Software Engineering
Cone-Beam Computed Tomography
Research Design
Preoperative Period
Physical Sciences
symbols
Engineering and Technology
Plastic Surgery and Reconstructive Techniques
Statistics (Mathematics)
Research Article
Computer and Information Sciences
medicine.medical_specialty
Clinical Research Design
Oral Medicine
Surgical and Invasive Medical Procedures
Biostatistics
Research and Analysis Methods
symbols.namesake
DICOM
Imaging
Three-Dimensional
Diagnostic Medicine
Computer Graphics
medicine
Humans
Superimposition
Medical physics
Retrospective Studies
Software Tools
business.industry
lcsh:R
Computing Methods
Pearson product-moment correlation coefficient
Computed Axial Tomography
Face
Dentistry
Signal Processing
lcsh:Q
business
computer
Mathematics
Zdroj: PLoS ONE
PLoS ONE, Vol 9, Iss 4, p e93402 (2014)
ISSN: 1932-6203
Popis: Purpose:\ud \ud Superimposition of two dimensional preoperative and postoperative facial images, including radiographs and photographs, are used to evaluate the surgical changes after orthognathic surgery. Recently, three dimensional (3D) imaging has been introduced allowing more accurate analysis of surgical changes. Surface based registration and voxel based registration are commonly used methods for 3D superimposition. The aim of this study was to evaluate and compare the accuracy of the two methods.\ud \ud Materials and methods:\ud \ud Pre-operative and 6 months post-operative cone beam CT scan (CBCT) images of 31 patients were randomly selected from the orthognathic patient database at the Dental Hospital and School, University of Glasgow, UK. Voxel based registration was performed on the DICOM images (Digital Imaging Communication in Medicine) using Maxilim software (Medicim-Medical Image Computing, Belgium). Surface based registration was performed on the soft and hard tissue 3D models using VRMesh (VirtualGrid, Bellevue City, WA). The accuracy of the superimposition was evaluated by measuring the mean value of the absolute distance between the two 3D image surfaces. The results were statistically analysed using a paired Student t-test, ANOVA with post-hoc Duncan test, a one sample t-test and Pearson correlation coefficient test.\ud \ud Results:\ud \ud The results showed no significant statistical difference between the two superimposition methods (p\ud \ud Conclusions:\ud \ud There were no significant statistical differences between the two registration methods and it was unlikely to have any clinical significance. Voxel based registration was associated with less variability. Registering on the soft tissue in isolation from the hard tissue may not be a true reflection of the surgical change.
Databáze: OpenAIRE
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