Automatic tracking of implanted fiducial markers in cone beam CT projection imagesCitation formats

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Automatic tracking of implanted fiducial markers in cone beam CT projection images. / Marchant, T. E.; Skalski, A.; Matuszewski, B. J.

In: Medical Physics, Vol. 39, No. 3, 03.2012, p. 1322-1334.

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Harvard

Marchant, TE, Skalski, A & Matuszewski, BJ 2012, 'Automatic tracking of implanted fiducial markers in cone beam CT projection images', Medical Physics, vol. 39, no. 3, pp. 1322-1334. https://doi.org/10.1118/1.3684959

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Marchant, T. E. ; Skalski, A. ; Matuszewski, B. J. / Automatic tracking of implanted fiducial markers in cone beam CT projection images. In: Medical Physics. 2012 ; Vol. 39, No. 3. pp. 1322-1334.

Bibtex

@article{947898ce82bd4972aa782f98329c3149,
title = "Automatic tracking of implanted fiducial markers in cone beam CT projection images",
abstract = "Purpose: This paper describes a novel method for simultaneous intrafraction tracking of multiple fiducial markers. Although the proposed method is generic and can be adopted for a number of applications including fluoroscopy based patient position monitoring and gated radiotherapy, the tracking results presented in this paper are specific to tracking fiducial markers in a sequence of cone beam CT projection images. Methods: The proposed method is accurate and robust thanks to utilizing the mean shift and random sampling principles, respectively. The performance of the proposed method was evaluated with qualitative and quantitative methods, using data from two pancreatic and one prostate cancer patients and a moving phantom. The ground truth, for quantitative evaluation, was calculated based on manual tracking preformed by three observers. Results: The average dispersion of marker position error calculated from the tracking results for pancreas data (six markers tracked over 640 frames, 3840 marker identifications) was 0.25 mm (at iscoenter), compared with an average dispersion for the manual ground truth estimated at 0.22 mm. For prostate data (three markers tracked over 366 frames, 1098 marker identifications), the average error was 0.34 mm. The estimated tracking error in the pancreas data was",
keywords = "cone beam CT, image-guided radiotherapy, marker tracking",
author = "Marchant, {T. E.} and A. Skalski and Matuszewski, {B. J.}",
year = "2012",
month = "3",
doi = "10.1118/1.3684959",
language = "English",
volume = "39",
pages = "1322--1334",
journal = "Medical Physics",
issn = "0094-2405",
publisher = "John Wiley & Sons Ltd",
number = "3",

}

RIS

TY - JOUR

T1 - Automatic tracking of implanted fiducial markers in cone beam CT projection images

AU - Marchant, T. E.

AU - Skalski, A.

AU - Matuszewski, B. J.

PY - 2012/3

Y1 - 2012/3

N2 - Purpose: This paper describes a novel method for simultaneous intrafraction tracking of multiple fiducial markers. Although the proposed method is generic and can be adopted for a number of applications including fluoroscopy based patient position monitoring and gated radiotherapy, the tracking results presented in this paper are specific to tracking fiducial markers in a sequence of cone beam CT projection images. Methods: The proposed method is accurate and robust thanks to utilizing the mean shift and random sampling principles, respectively. The performance of the proposed method was evaluated with qualitative and quantitative methods, using data from two pancreatic and one prostate cancer patients and a moving phantom. The ground truth, for quantitative evaluation, was calculated based on manual tracking preformed by three observers. Results: The average dispersion of marker position error calculated from the tracking results for pancreas data (six markers tracked over 640 frames, 3840 marker identifications) was 0.25 mm (at iscoenter), compared with an average dispersion for the manual ground truth estimated at 0.22 mm. For prostate data (three markers tracked over 366 frames, 1098 marker identifications), the average error was 0.34 mm. The estimated tracking error in the pancreas data was

AB - Purpose: This paper describes a novel method for simultaneous intrafraction tracking of multiple fiducial markers. Although the proposed method is generic and can be adopted for a number of applications including fluoroscopy based patient position monitoring and gated radiotherapy, the tracking results presented in this paper are specific to tracking fiducial markers in a sequence of cone beam CT projection images. Methods: The proposed method is accurate and robust thanks to utilizing the mean shift and random sampling principles, respectively. The performance of the proposed method was evaluated with qualitative and quantitative methods, using data from two pancreatic and one prostate cancer patients and a moving phantom. The ground truth, for quantitative evaluation, was calculated based on manual tracking preformed by three observers. Results: The average dispersion of marker position error calculated from the tracking results for pancreas data (six markers tracked over 640 frames, 3840 marker identifications) was 0.25 mm (at iscoenter), compared with an average dispersion for the manual ground truth estimated at 0.22 mm. For prostate data (three markers tracked over 366 frames, 1098 marker identifications), the average error was 0.34 mm. The estimated tracking error in the pancreas data was

KW - cone beam CT

KW - image-guided radiotherapy

KW - marker tracking

U2 - 10.1118/1.3684959

DO - 10.1118/1.3684959

M3 - Article

VL - 39

SP - 1322

EP - 1334

JO - Medical Physics

JF - Medical Physics

SN - 0094-2405

IS - 3

ER -