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Development of a new 360-degree surface topography application.

R Michalik1, H Siebers1, J Eschweiler1

  • 1Department of Orthopaedics, University Hospital RWTH Aachen, Aachen, Germany.

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A new 360° torso scanning application using surface topography offers a valid and reliable method for radiation-free measurement of spinal posture. This technology aids in better diagnosis and treatment of spinal pathologies.

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Orthopedics

Background:

  • Surface topography has been utilized for nearly two decades for radiation-free clinical evaluation of spinal posture.
  • Current methods are limited to analyzing the back surface and spine.
  • Comprehensive torso measurement is crucial for understanding, diagnosing, and treating complex spinal pathologies.

Purpose of the Study:

  • To introduce and validate a novel application for 360° reconstruction and analysis of the patient's torso.
  • To assess the accuracy and reliability of this new surface topography application.

Main Methods:

  • The application integrates data from eight distinct scans and angles.
  • Validation involved comparing surface topography measurements with CT scans on an Alderson phantom.
  • Inter- and intra-rater reliability was assessed in 35 healthy subjects.

Main Results:

  • Good correspondence was observed between surface topography and CT measurements of the Alderson phantom (5.3-0.5%).
  • High inter- (0.9-0.98) and intra-rater reliability (0.8-0.95) were achieved for most body surface structure measurements.
  • Moderate reliability was noted for area and volume measurements using the jugular notch as a reference (0.62-0.93).

Conclusions:

  • A novel 360° torso scanning application utilizing surface topography has been successfully developed.
  • The study demonstrates high validity and reliability for reconstructing torso measurements.
  • Further testing in patients with spinal pathologies is warranted to establish clinical utility.