Evaluating the Therapeutic Dose Distribution of Intensity-Modulated Radiation Therapy for Head and Neck with Cone-Beam Computed Tomography Image : A Methodological Study
Joint Authors
Deng, Xiao-wu
Zhang, Guang-shun
Xu, Sen-kui
Zhang, Dan-dan
Huang, Shao-min
Chen, Cui
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-16
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
An approximate correction method for the CT value-electron density curve of CBCT was established, through comparison and fitting with FBCT images, and applied to evaluate the therapeutic dose of IMRT.
The precision of using CBCT for plan calculation was validated by comparing the dose distribution between CBCT- and FBCT-based IMRT plans.
Also setup deviations were simulated to evaluate the ability of the CBCT-based calculation for detecting the dose errors caused by positioning deviation.
The gamma comparison between CBCT- and FBCT-based dose computations showed that the pass rates of (2%, 2 mm) criteria were better than 97.60 ± 0.83% and 97.74 ± 2.08% in the phantom and 10 NPC cases.
When setup deviation was introduced into CBCT-based dose calculation, the gamma pass rate significantly decreased while the volumetric doses of the targets and some normal organs exhibited different changes compared to the original plan.
Our results validated the above CT value-electron density correction which reduced the difference between CBCT- and FBCT-based IMRT plan calculation for NPC to less than 2%.
Online CBCT-based dose calculation can be used to reflect and evaluate the dose distribution discrepancy caused by setup deviation and structure changes during the treatment, ensuring more effective quality control of IMRT treatment.
American Psychological Association (APA)
Zhang, Guang-shun& Huang, Shao-min& Chen, Cui& Xu, Sen-kui& Zhang, Dan-dan& Deng, Xiao-wu. 2014. Evaluating the Therapeutic Dose Distribution of Intensity-Modulated Radiation Therapy for Head and Neck with Cone-Beam Computed Tomography Image : A Methodological Study. BioMed Research International،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-463747
Modern Language Association (MLA)
Zhang, Guang-shun…[et al.]. Evaluating the Therapeutic Dose Distribution of Intensity-Modulated Radiation Therapy for Head and Neck with Cone-Beam Computed Tomography Image : A Methodological Study. BioMed Research International No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-463747
American Medical Association (AMA)
Zhang, Guang-shun& Huang, Shao-min& Chen, Cui& Xu, Sen-kui& Zhang, Dan-dan& Deng, Xiao-wu. Evaluating the Therapeutic Dose Distribution of Intensity-Modulated Radiation Therapy for Head and Neck with Cone-Beam Computed Tomography Image : A Methodological Study. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-463747
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463747