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Accurate model-based segmentation of gynecologic brachytherapy catheter collections in MRI-images

Medical Image Analysis, December 2017, Vol.42, pp.173-188 [Peer Reviewed Journal]

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  • Title:
    Accurate model-based segmentation of gynecologic brachytherapy catheter collections in MRI-images
  • Author: Mastmeyer, Andre ; Pernelle, Guillaume ; Ma, Ruibin ; Barber, Lauren ; Kapur, Tina
  • Found In: Medical Image Analysis, December 2017, Vol.42, pp.173-188 [Peer Reviewed Journal]
  • Subjects: Mri ; Segmentation ; Catheter ; Outlier Reduction ; Accuracy ; Precision ; Medicine ; Engineering
  • Language: English
  • Description: The gynecological cancer mortality rate, including cervical, ovarian, vaginal and vulvar cancers, is more than 20,000 annually in the US alone. In many countries, including the US, external-beam radiotherapy followed by high dose rate brachytherapy is the standard-of-care. The superior ability of MR to visualize soft tissue has led to an increase in its usage in planning and delivering brachytherapy treatment. A technical challenge associated with the use of MRI imaging for brachytherapy, in contrast to that of CT imaging, is the visualization of catheters that are used to place radiation sources into cancerous tissue. We describe here a precise, accurate method for achieving catheter segmentation and visualization. The algorithm, with the assistance of manually provided tip locations, performs segmentation using image-features, and is guided by a catheter-specific, estimated mechanical model. A final quality control step removes outliers or conflicting catheter trajectories....
  • Identifier: ISSN: 1361-8415 ; E-ISSN: 1361-8423 ; DOI: 10.1016/j.media.2017.06.011

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