2015
DOI: 10.1118/1.4917480
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Real‐time markerless lung tumor tracking in fluoroscopic video: Handling overlapping of projected structures

Abstract: This study shows that in case of tumor overlapping with dense structures, multiple-template tracking provides more accurate results than a single-template approach. The developed algorithm shows promising results in terms of suitability for real-time application and robustness against frequently changing overlapping.

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Cited by 20 publications
(24 citation statements)
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References 46 publications
(44 reference statements)
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“…The proposed Bayesian approach is crucial for kV-based markerless tumor tracking for several reasons. Firstly, conventional template matching based tracking method is rarely able to continuously track the tumor due to inferior tumor visibility (Teske et al , 2015; van Sornsen de Koste et al , 2015). By combining motion prediction and measurement uncertainty estimation with template matching, the proposed method is able to track the tumor even when a good template match is not possible.…”
Section: Discussionmentioning
confidence: 99%
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“…The proposed Bayesian approach is crucial for kV-based markerless tumor tracking for several reasons. Firstly, conventional template matching based tracking method is rarely able to continuously track the tumor due to inferior tumor visibility (Teske et al , 2015; van Sornsen de Koste et al , 2015). By combining motion prediction and measurement uncertainty estimation with template matching, the proposed method is able to track the tumor even when a good template match is not possible.…”
Section: Discussionmentioning
confidence: 99%
“…Obstruction by the treatment beam aperture in intensity-modulated radiation therapy (IMRT) treatments is also a common problem for MV-based methods. Teske et al (2015) reported insufficient tumor visibility for tracking in 6 out of 14 patients in the anterior-posterior (AP) view. Other views have larger radiological depths and are generally more difficult for tracking than the AP view.…”
Section: Introductionmentioning
confidence: 99%
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“…bony anatomy), or when the radiological depth varies due to gantry rotation. In a study by Teske et al (2015), tumor visibility was insufficient for tracking in 6 out of 14 patients in the anterior-posterior (AP) view. More patients are expected to be ineligible for markerless tracking during gantry rotation.…”
Section: Introductionmentioning
confidence: 99%
“…Image-based tracking uses patient images taken in realtime with the aid of a fluoroscopic video, [1][2][3][4][5] cone beam CT (CBCT), [6][7][8] or magnetic resonance (MR). [9][10][11] Image-based tracking also requires real-time image segmentation and motion detection.…”
Section: Introductionmentioning
confidence: 99%