Scaled, patient-specific 3D vertebral model reconstruction based on 2D lateral fluoroscopy.

International Journal of Computer Assisted Radiology and Surgery
Guoyan ZhengStephen J Ferguson

Abstract

Accurate three-dimensional (3D) models of lumbar vertebrae are required for image-based 3D kinematics analysis. MRI or CT datasets are frequently used to derive 3D models but have the disadvantages that they are expensive, time-consuming or involving ionizing radiation (e.g., CT acquisition). An alternative method using 2D lateral fluoroscopy was developed. A technique was developed to reconstruct a scaled 3D lumbar vertebral model from a single two-dimensional (2D) lateral fluoroscopic image and a statistical shape model of the lumbar vertebrae. Four cadaveric lumbar spine segments and two statistical shape models were used for testing. Reconstruction accuracy was determined by comparison of the surface models reconstructed from the single lateral fluoroscopic images to the ground truth data from 3D CT segmentation. For each case, two different surface-based registration techniques were used to recover the unknown scale factor, and the rigid transformation between the reconstructed surface model and the ground truth model before the differences between the two discrete surface models were computed. Successful reconstruction of scaled surface models was achieved for all test lumbar vertebrae based on single lateral fluoroscopic...Continue Reading

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Citations

Oct 31, 2014·International Journal of Computer Assisted Radiology and Surgery·Marine ClogensonSimon Henein
Jan 1, 2015·Applied Bionics and Biomechanics·Chih-Ju ChangChing-Shiow Tseng
Oct 26, 2013·Computer Methods in Biomechanics and Biomedical Engineering·Tsung-Yuan TsaiGuoan Li
Apr 3, 2014·Current Osteoporosis Reports·Isaac Castro-MateosAlejandro F Frangi
Apr 11, 2018·International Journal of Computer Assisted Radiology and Surgery·Robyn NewellAntony J Hodgson

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