Quantifying Calcification in the Lumbar Aorta on X-Ray Images

نویسندگان

  • Lars A. Conrad-Hansen
  • Marleen de Bruijne
  • François Lauze
  • László B. Tankó
  • Paola Pettersen
  • Qing He
  • Jianghong Chen
  • Claus Christiansen
  • Mads Nielsen
چکیده

In this paper we propose to use inpainting to estimate the severity of atherosclerotic plaques from X-ray projections. Inpainting allows to "remove" the plaque and estimate what the background image for an uncalcified aorta would have looked like. A measure of plaque severity can then be derived by subtracting the inpainting from the original image. In contrast to the current standard of categorical calcification scoring from X-rays, our method estimates both the size and the density of calcified areas and provides a continuous severity score, thus allowing for measurement of more subtle differences. We discuss a class of smooth inpainting methods, compare their ability to reconstruct the original images, and compare the inpainting based calcification score to the conventional categorical score in a longitudinal study on 49 patients addressing correlations of the calcification scores with hypertension, a known cardiovascular risk factor.

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عنوان ژورنال:
  • Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention

دوره 10 Pt 2  شماره 

صفحات  -

تاریخ انتشار 2007