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3D reconstruction of the spine from biplanar X-rays using parametric models based on transversal and longitudinal inferences

Humbert, L ; De Guise, J.A ; Aubert, B ; Godbout, B ; Skalli, W

Medical engineering & physics, 2009-07, Vol.31 (6), p.681-687 [Periódico revisado por pares]

England: Elsevier Ltd

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  • Título:
    3D reconstruction of the spine from biplanar X-rays using parametric models based on transversal and longitudinal inferences
  • Autor: Humbert, L ; De Guise, J.A ; Aubert, B ; Godbout, B ; Skalli, W
  • Assuntos: 3D reconstruction ; Biplanar X-rays ; Computer Simulation ; Humans ; Imaging, Three-Dimensional - methods ; Longitudinal and transversal inferences ; Models, Anatomic ; Radiographic Image Interpretation, Computer-Assisted - methods ; Radiology ; Scoliosis ; Scoliosis - diagnostic imaging ; Scoliosis - pathology ; Spine ; Spine - diagnostic imaging ; Spine - pathology
  • É parte de: Medical engineering & physics, 2009-07, Vol.31 (6), p.681-687
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
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  • Descrição: Abstract Reconstruction methods from biplanar X-rays provide 3D analysis of spinal deformities for patients in standing position with a low radiation dose. However, such methods require an important reconstruction time and there is a clinical need for fast and accurate techniques. This study proposes and evaluates a novel reconstruction method of the spine from biplanar X-rays. The approach uses parametric models based on longitudinal and transversal inferences. A first reconstruction level, dedicated to routine clinical use, allows to get a fast estimate (reconstruction time: 2 min 30 s) of the 3D reconstruction and accurate clinical measurements. The clinical measurements precision (evaluated on asymptomatic subjects, moderate and severe scolioses) was between 1.2° and 5.6°. For a more accurate 3D reconstruction (complex pathologies or research purposes), a second reconstruction level can be obtained within a reduced reconstruction time (10 min) with a fine adjustment of the 3D models. The mean shape accuracy in comparison with CT-scan was 1.0 mm. The 3D reconstruction method precision was 1.8 mm for the vertebrae position and between 2.3° and 3.9° for the orientation. With a reduced reconstruction time, an improved accuracy and precision and a method proposing two reconstruction levels, this approach is efficient for both clinical routine uses and research purposes.
  • Editor: England: Elsevier Ltd
  • Idioma: Inglês
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