Declustering n-connected components for segmentation of iodine implants in C-arm fluoroscopy images

Chiara Amat Di San Filippo, Gabor Fichtinger, William James Morris, Septimiu E. Salcudean, Ehsan Dehghan, Pascal Fallavollita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dynamic dosimetry is becoming the standard to evaluate the quality of radioactive implants during brachytherapy. It is essential to obtain a 3D visualization of the implanted seeds and their relative position to the prostate. For this, a robust and precise segmentation of the seeds in 2D X-ray is required. First, implanted seeds are segmented using a region-based implicit active contour approach. Then, n-seed clusters are resolved using an efficient template based approach. A collection of 55 C-arm images from 10 patients are used to validate the proposed algorithm. Compared to manual ground-truth segmentation of 6002 seeds, 98.7% of seeds were automatically detected and declustered showing a false-positive rate of only 1.7%. Results indicate the proposed method is able to perform the identification and annotation processes of seeds on par with a human expert, constituting a viable alternative to the traditional manual segmentation approach.

Original languageEnglish (US)
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Pages101-110
Number of pages10
Volume7915 LNCS
DOIs
StatePublished - 2013
Externally publishedYes
Event4th International Conference on Information Processing in Computer-Assisted Interventions, IPCAI 2013 - Heidelberg, Germany
Duration: Jun 26 2013Jun 26 2013

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume7915 LNCS
ISSN (Print)03029743
ISSN (Electronic)16113349

Other

Other4th International Conference on Information Processing in Computer-Assisted Interventions, IPCAI 2013
CountryGermany
CityHeidelberg
Period6/26/136/26/13

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

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