| Autor: |
van Wijk, Cees, van Ravesteijn, Vincent F., Vos, Frank M., Truyen, Reel, de Vries, Ayso H., Stoker, Jaap, van Vliet, Lucas J. |
| Přispěvatelé: |
Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam Neuroscience, Radiology and Nuclear Medicine, Other departments, Cancer Center Amsterdam |
| Jazyk: |
angličtina |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
LECTURE NOTES IN COMPUTER SCIENCE, 4191, 471-478. Springer Verlag |
| Popis: |
Over the past years many computer aided diagnosis (CAD) schemes have been presented for the detection of colonic polyps in CT Colonography. The vast majority of these methods (implicitly) model polyps as approximately spherical protrusions. Polyp shape and size varies greatly, however and is often far from spherical. We propose a shape and size invariant method to detect suspicious regions. The method works by locally deforming the colon surface until the second principal curvature is smaller than or equal to zero. The amount of deformation is a quantitative measure of the 'protrudeness'. The deformation field allows for the computation of various additional features to be used in supervised pattern recognition. It is shown how only a few features are needed to achieve 95% sensitivity at 10 false positives (FP) per dataset for polyps larger than 6 mm |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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