Electronic stool subtraction using quadratic regression, morphological operations, and distance transforms

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

7 Citations (Scopus)

Abstract

CT colonography (CTC) is being extensively studied for its potential value in colon examinations, since it offers many advantages such as lower risk and less patient discomfort. However, CTC, like all other types of full structural colorectal examinations to date, requires complete bowel preparation. The inconvenience and discomfort associated with this preparation is an important obstacle to compliance with currently recommended colorectal screening guidelines To maximize compliance, CTC would ideally be performed on an unprepared colon. However, in an unprepared colon residual stool and fluid can mimic soft tissue density and thus confound the identification of polyps An alternative is to tag the stool with an opacifying agent so that it is brighter than soft tissue and thus easily recognized automatically and then reset to air values. However, such electronic stool subtraction in a totally unprepared colon is difficult to perform accurately for several reasons, including poorly labeled areas of stool, the need to accurately quantify partial volume effects, and noise. In this study the qualitative performance of a novel stool subtraction algorithm was assessed in unprepared CT colonography screening exams of 26 consecutive volunteers Results showed that nearly all stool was removed in 62% of the cases, fold erosion was mild or nonexistent in 75% of the cases, and wall erosion was mild or non-existent in 100% of cases. Although further study and refinement of the stool subtraction process is required, CT colonography of the unprepared colon with electronic stool subtraction is feasible.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6511
EditionPART 1
DOIs
StatePublished - 2007
EventMedical Imaging 2007: Physiology, Function, and Structure from Medical Images - San Diego, CA, United States
Duration: Feb 18 2007Feb 20 2007

Other

OtherMedical Imaging 2007: Physiology, Function, and Structure from Medical Images
CountryUnited States
CitySan Diego, CA
Period2/18/072/20/07

Fingerprint

Erosion
Screening
Tissue
Fluids
Air
Compliance

Keywords

  • Cancer
  • Colon
  • Colon cleansing
  • Colonography
  • Colonoscopy
  • CT
  • Electronic stool subtraction
  • Stool tagging

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Carston, M., Manduca, A., & Johnson, C. D. (2007). Electronic stool subtraction using quadratic regression, morphological operations, and distance transforms. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (PART 1 ed., Vol. 6511). [65110W] https://doi.org/10.1117/12.713629

Electronic stool subtraction using quadratic regression, morphological operations, and distance transforms. / Carston, Michael; Manduca, Armando; Johnson, C. Daniel.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6511 PART 1. ed. 2007. 65110W.

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

Carston, M, Manduca, A & Johnson, CD 2007, Electronic stool subtraction using quadratic regression, morphological operations, and distance transforms. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 edn, vol. 6511, 65110W, Medical Imaging 2007: Physiology, Function, and Structure from Medical Images, San Diego, CA, United States, 2/18/07. https://doi.org/10.1117/12.713629
Carston M, Manduca A, Johnson CD. Electronic stool subtraction using quadratic regression, morphological operations, and distance transforms. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 6511. 2007. 65110W https://doi.org/10.1117/12.713629
Carston, Michael ; Manduca, Armando ; Johnson, C. Daniel. / Electronic stool subtraction using quadratic regression, morphological operations, and distance transforms. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6511 PART 1. ed. 2007.
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