Determination of vertebral pose in 3D by minimization of vertebral asymmetry

Tomaž Vrtovec; Franjo Pernuš; Boštjan Likar

doi:10.1117/12.877762

9 March 2011 Determination of vertebral pose in 3D by minimization of vertebral asymmetry

Tomaž Vrtovec, Franjo Pernuš, Boštjan Likar

Proceedings Volume 7962, Medical Imaging 2011: Image Processing; 79620F (2011) https://doi.org/10.1117/12.877762
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

The vertebral pose in three dimensions (3D) may provide valuable information for quantitative clinical measurements or aid the initialization of image analysis techniques. We propose a method for automated determination of the vertebral pose in 3D that, in an iterative registration scheme, estimates the position and rotation of the vertebral coordinate system in 3D images. By searching for the hypothetical points, which are located where the boundaries of anatomical structures would have maximal symmetrical correspondences when mirrored over the vertebral planes, the asymmetry of vertebral anatomical structures is minimized. The method was evaluated on 14 normal and 14 scoliotic vertebrae in images acquired by computed tomography (CT). For each vertebra, 1000 randomly initialized experiments were performed. The results show that the vertebral pose can be successfully determined in 3D with mean accuracy of 0.5mm and 0.6° and mean precision of 0.17mm and 0.17. according to the 3D position and 3D rotation, respectively.

Citation Download Citation

Tomaž Vrtovec, Franjo Pernuš, and Boštjan Likar "Determination of vertebral pose in 3D by minimization of vertebral asymmetry", Proc. SPIE 7962, Medical Imaging 2011: Image Processing, 79620F (9 March 2011); https://doi.org/10.1117/12.877762

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