Model-based segmentation of pediatric and adult joints for orthopedic measurements in digital radiographs of the lower limbs

Link:
Autor/in:
Verlag/Körperschaft:
Hamburg University of Technology
Erscheinungsjahr:
2011
Medientyp:
Text
Schlagworte:
  • Active shape models
  • Bone age assessment
  • Digital radiography
  • Orthopedics
  • Segmentation
  • X-ray
  • 610: Medizin
Beschreibung:
  • The growth of human bones forms a major problem when automatically segmenting orthopedic radiographs. Any template-based segmentation methods fails to fully capture these non-linear developments. However to extract orthopedic measurements or the bone age for patients of arbitrary age it is mandatory to have a segmentation scheme that deals with growth related changes. In this paper we propose a robust method based on Active Shape Models (ASMs) that on the one hand is invariant against the patient's age and on the other hand generalizes well over the large inter-patient variability. Our method achieves an accuracy of 0.48 mm for adult patients and 0.64 mm for children on a large test set of 180 images, with the patient's age covering a high range from less than one month to 93 years. © 2010 Springer-Verlag.
Beziehungen:
DOI 10.1007/s00450-010-0139-8
Quellsystem:
TUHH Open Research

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Quelldatensatz
oai:tore.tuhh.de:11420/9998