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Proceedings Paper

Filter learning and evaluation of the computer aided visualization and analysis (CAVA) paradigm for pulmonary nodules using the LIDC-IDRI database
Author(s): Rafael Wiemker; Ekta Dharaiya; Amnon Steinberg; Thomas Buelow; Axel Saalbach; Torbjörn Vik
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Paper Abstract

We present a simple rendering scheme for thoracic CT datasets which yields a color coding based on local differential geometry features rather than Hounsfield densities. The local curvatures are computed on several resolution scales and mapped onto different colors, thereby enhancing nodular and tubular structures. The rendering can be used as a navigation device to quickly access points of possible chest anomalies, in particular lung nodules and lymph nodes. The underlying principle is to use the nodule enhancing overview as a possible alternative to classical CAD approaches by avoiding explicit graphical markers. For performance evaluation we have used the LIDC-IDRI lung nodule data base. Our results indicate that the nodule-enhancing overview correlates well with the projection images produced from the IDRI expert annotations, and that we can use this measure to optimize the combination of differential geometry filters.

Paper Details

Date Published: 9 March 2010
PDF: 12 pages
Proc. SPIE 7624, Medical Imaging 2010: Computer-Aided Diagnosis, 76242U (9 March 2010); doi: 10.1117/12.843797
Show Author Affiliations
Rafael Wiemker, Philips Research Europe (Germany)
Ekta Dharaiya, Philips Healthcare CT (Israel)
Amnon Steinberg, Philips Healthcare CT (Israel)
Thomas Buelow, Philips Research Europe (Germany)
Axel Saalbach, Philips Research Europe (Germany)
Torbjörn Vik, Philips Research Europe (Germany)

Published in SPIE Proceedings Vol. 7624:
Medical Imaging 2010: Computer-Aided Diagnosis
Nico Karssemeijer; Ronald M. Summers, Editor(s)

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