Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

An adaptive fuzzy prediction model for real time tumor tracking in radiotherapy via external surrogates

(2013) An adaptive fuzzy prediction model for real time tumor tracking in radiotherapy via external surrogates. Journal of Applied Clinical Medical Physics. pp. 102-114. ISSN 1526-9914

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Abstract

In the radiation treatment of moving targets with external surrogates, information on tumor position in real time can be extracted by using accurate correlation models. A fuzzy environment is proposed here to correlate input surrogate data with tumor motion estimates in real time. In this study, two different data clustering approaches were analyzed due to their substantial effects on the fuzzy modeler performance. Moreover, a comparative investigation was performed on two fuzzy-based and one neuro-fuzzy-based inference systems with respect to state-of-the-art models. Finally, due to the intrinsic interpatient variability in fuzzy models' performance, a model selectivity algorithm was proposed to select an adaptive fuzzy modeler on a case-by-case basis. The performance of multiple and adaptive fuzzy logic models were retrospectively tested in 20 patients treated with CyberKnife real-time tumor tracking. Final results show that activating adequate model selection of our fuzzy-based modeler can significantly reduce tumor tracking errors.

Item Type: Article
Keywords: radiotherapy tumor tracking fuzzy logic data clustering adaptive prediction model breath-hold technique respiratory motion system lung inference accuracy identification rule Radiology, Nuclear Medicine & Medical Imaging
Divisions:
Page Range: pp. 102-114
Journal or Publication Title: Journal of Applied Clinical Medical Physics
Journal Index: ISI
Volume: 14
Number: 1
Identification Number: https://doi.org/10.1120/jacmp.v14i1.4008
ISSN: 1526-9914
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/6144

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