USAGE OF PCA FOR PARAMETERIZATION IN VERTEBRAL COLUMN DYNAMIC EXAMINATIONS 8. studenoga 2017.15. prosinca 2019. | nikola Rodrigo Díaz Fernández¹, Fernando Mugarra González², Jacek Dusza³ and Paweł Grabowski³ ¹ Hospital General de Ontinyent, Valencia, Spain ² University of Valencia, Spain ³ Warsaw University of Technology, Warsaw, Poland