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Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation

The aims of this study were to investigate the variability between physicians in delineation of head and neck tumors on original tomotherapy megavoltage CT (MVCT) studies and corresponding software enhanced MVCT images, and to establish an optimal approach for evaluation of image improvement. Five p...

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Autores principales: Martin, Spencer, Rodrigues, George, Chen, Quan, Pavamani, Simon, Read, Nancy, Ahmad, Belal, Hammond, J. Alex, Venkatesan, Varagur, Renaud, James, Yartsev, Slav
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5718637/
https://www.ncbi.nlm.nih.gov/pubmed/21844864
http://dx.doi.org/10.1120/jacmp.v12i3.3505
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author Martin, Spencer
Rodrigues, George
Chen, Quan
Pavamani, Simon
Read, Nancy
Ahmad, Belal
Hammond, J. Alex
Venkatesan, Varagur
Renaud, James
Yartsev, Slav
author_facet Martin, Spencer
Rodrigues, George
Chen, Quan
Pavamani, Simon
Read, Nancy
Ahmad, Belal
Hammond, J. Alex
Venkatesan, Varagur
Renaud, James
Yartsev, Slav
author_sort Martin, Spencer
collection PubMed
description The aims of this study were to investigate the variability between physicians in delineation of head and neck tumors on original tomotherapy megavoltage CT (MVCT) studies and corresponding software enhanced MVCT images, and to establish an optimal approach for evaluation of image improvement. Five physicians contoured the gross tumor volume (GTV) for three head and neck cancer patients on 34 original and enhanced MVCT studies. Variation between original and enhanced MVCT studies was quantified by DICE coefficient and the coefficient of variance. Based on volume of agreement between physicians, higher correlation in terms of average DICE coefficients was observed in GTV delineation for enhanced MVCT for patients 1, 2, and 3 by 15%, 3%, and 7%, respectively, while delineation variance among physicians was reduced using enhanced MVCT for 12 of 17 weekly image studies. Enhanced MVCT provides advantages in reduction of variance among physicians in delineation of the GTV. Agreement on contouring by the same physician on both original and enhanced MVCT was equally high. PACS numbers: 87.57.N‐, 87.57.np, 87.57.nt
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spelling pubmed-57186372018-04-02 Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation Martin, Spencer Rodrigues, George Chen, Quan Pavamani, Simon Read, Nancy Ahmad, Belal Hammond, J. Alex Venkatesan, Varagur Renaud, James Yartsev, Slav J Appl Clin Med Phys Radiation Oncology Physics The aims of this study were to investigate the variability between physicians in delineation of head and neck tumors on original tomotherapy megavoltage CT (MVCT) studies and corresponding software enhanced MVCT images, and to establish an optimal approach for evaluation of image improvement. Five physicians contoured the gross tumor volume (GTV) for three head and neck cancer patients on 34 original and enhanced MVCT studies. Variation between original and enhanced MVCT studies was quantified by DICE coefficient and the coefficient of variance. Based on volume of agreement between physicians, higher correlation in terms of average DICE coefficients was observed in GTV delineation for enhanced MVCT for patients 1, 2, and 3 by 15%, 3%, and 7%, respectively, while delineation variance among physicians was reduced using enhanced MVCT for 12 of 17 weekly image studies. Enhanced MVCT provides advantages in reduction of variance among physicians in delineation of the GTV. Agreement on contouring by the same physician on both original and enhanced MVCT was equally high. PACS numbers: 87.57.N‐, 87.57.np, 87.57.nt John Wiley and Sons Inc. 2011-04-12 /pmc/articles/PMC5718637/ /pubmed/21844864 http://dx.doi.org/10.1120/jacmp.v12i3.3505 Text en © 2011 The Authors. https://creativecommons.org/licenses/by/3.0/This is an open access article under the terms of the Creative Commons Attribution (https://creativecommons.org/licenses/by/3.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Radiation Oncology Physics
Martin, Spencer
Rodrigues, George
Chen, Quan
Pavamani, Simon
Read, Nancy
Ahmad, Belal
Hammond, J. Alex
Venkatesan, Varagur
Renaud, James
Yartsev, Slav
Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation
title Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation
title_full Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation
title_fullStr Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation
title_full_unstemmed Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation
title_short Evaluation of tomotherapy MVCT image enhancement program for tumor volume delineation
title_sort evaluation of tomotherapy mvct image enhancement program for tumor volume delineation
topic Radiation Oncology Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5718637/
https://www.ncbi.nlm.nih.gov/pubmed/21844864
http://dx.doi.org/10.1120/jacmp.v12i3.3505
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