Model-Based Radiation-Free Assessment of Scoliosis: A Principle Validation Study

Susmita Roy, Alexander T.D. Grünwald, Renée Lampe

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Purpose: Adolescent scoliosis is one of the common pediatric spinal diseases which has a high risk of progression due to the rapid growth of the skeleton during the growing stage therefore needs regular clinical monitoring including X-rays. Because X-rays could lead to ionizing radiation-related health problems, an ionizing radiation-free, non-invasive method is presented here to estimate the degree of scoliosis and to potentially support the medical assessment. Methods: The radiation-free body scanner provides a 3D surface scan of the torso. A basic 3D structure of the human ribcage and vertebral column was modeled and simulated with computer-aided design software and finite element method calculation. For comparison with X-rays, courses of vertebral columns derived from 3D torso images and 3D models were analyzed with respect to their apex positions and angles. Results: The methods show good results in the estimation of the apex positions of scoliosis. Strong correlations (R = 0.8924) were found between the apex and Cobb angle from X-rays. Similar correlations (R = 0.8087) was obtained between the apex angles extracted from X-rays and the combination of torso scan images with 3D model simulations. Promising agreement was obtained between the spinal trajectories extracted from X-ray and 3D torso images. Conclusions: Very strong correlations suggest that the apex angle could potentially be used for scoliosis assessment in follow-up examinations in complement to the Cobb angle. However, further improvements of the methods and tests on a larger number of data set are necessary before their introduction into the clinical application.

Original languageEnglish
Pages (from-to)107-114
Number of pages8
JournalJournal of Medical and Biological Engineering
Issue number1
StatePublished - Feb 2022


  • 3D model of the rib cage and vertebral column
  • Body scanner
  • Finite element method
  • Ionizing radiation-free
  • Noninvasive
  • Scoliosis


Dive into the research topics of 'Model-Based Radiation-Free Assessment of Scoliosis: A Principle Validation Study'. Together they form a unique fingerprint.

Cite this