Shape filtering for false positive reduction at computed tomography colonography
Miranda, Abhilash A., Chowdhury, Tarik A., Ghita, Ovidiu and Whelan, Paul F.ORCID: 0000-0001-9230-7656
(2006)
Shape filtering for false positive reduction at computed tomography colonography.
In: MICCAI 2006 - 9th International Conference on Medical Image Computing and Computer-Assisted Intervention, 1-6 October 2006, Copenhagen, Denmark.
ISBN 978-3-540-44727-6
In this paper, we treat the problem of reducing the false positives (FP) in the automatic detection of colorectal polyps at Computer Aided Detection in Computed Tomography Colonography (CAD-CTC) as a shape-filtering task. From the extracted candidate surface, we obtain a reliable shape distribution function and analyse it in the Fourier domain and use the resulting spectral data to classify the candidate surface as belonging to a polyp or a non-polyp class. The developed shape filtering scheme is computationally efficient (takes approximately 2 seconds per dataset to detect the polyps from the colonic surface) and offers robust polyp detection with an overall false positive rate of 5.44 per dataset at a sensitivity of 100% for polyps greater than 10mm when it was applied to standard and low dose CT data.
Metadata
Item Type:
Conference or Workshop Item (Paper)
Event Type:
Conference
Refereed:
Yes
Uncontrolled Keywords:
image analysis; Computer Aided Detection in Computed Tomography Colonography (CAD-CTC);
Medical Image Computing and Computer-Assisted Intervention – MICCAI 2006. Lecture Notes in Computer Science
4191.
Springer Berlin / Heidelberg. ISBN 978-3-540-44727-6