The reasons for discrepancies in target volume delineation : a SASRO study on head-and-neck and prostate cancers.

Details

Ressource 1Download: serval:BIB_0DD4945B41E1.P001 (419.86 [Ko])
State: Public
Version: author
License: Not specified
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
Serval ID
serval:BIB_0DD4945B41E1
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The reasons for discrepancies in target volume delineation : a SASRO study on head-and-neck and prostate cancers.
Journal
Strahlentherapie und Onkologie
Author(s)
Jeanneret-Sozzi W., Moeckli R., Valley J.F., Zouhair A., Ozsahin E.M., Mirimanoff R.O.
ISSN
0179-7158
Publication state
Published
Issued date
2006
Peer-reviewed
Oui
Volume
182
Number
8
Pages
450-457
Language
english
Notes
Publication types: Case Reports ; Comparative Study ; Journal Article
Abstract
PURPOSE: To understand the reasons for differences in the delineation of target volumes between physicians. MATERIAL AND METHODS: 18 Swiss radiooncology centers were invited to delineate volumes for one prostate and one head-and-neck case. In addition, a questionnaire was sent to evaluate the differences in the volume definition (GTV [gross tumor volume], CTV [clinical target volume], PTV [planning target volume]), the various estimated margins, and the nodes at risk. Coherence between drawn and stated margins by centers was calculated. The questionnaire also included a nonspecific series of questions regarding planning methods in each institution. RESULTS: Fairly large differences in the drawn volumes were seen between the centers in both cases and also in the definition of volumes. Correlation between drawn and stated margins was fair in the prostate case and poor in the head-and-neck case. The questionnaire revealed important differences in the planning methods between centers. CONCLUSION: These large differences could be explained by (1) a variable knowledge/interpretation of ICRU definitions, (2) variable interpretations of the potential microscopic extent, (3) difficulties in GTV identification, (4) differences in the concept, and (5) incoherence between theory (i.e., stated margins) and practice (i.e., drawn margins).
Keywords
Adenocarcinoma/pathology, Adenocarcinoma/radiography, Aged, CD-ROM, Carcinoma, Squamous Cell/pathology, Carcinoma, Squamous Cell/radiography, Head and Neck Neoplasms/pathology, Head and Neck Neoplasms/radiography, Humans, Lymph Nodes/pathology, Male, Neoplasm Staging, Observer Variation, Prostate/pathology, Prostate-Specific Antigen/blood, Prostatic Neoplasms/blood, Prostatic Neoplasms/pathology, Questionnaires, Radiotherapy Planning, Computer-Assisted, Tomography, X-Ray Computed, Tongue/pathology, Tongue Neoplasms/pathology, Tongue Neoplasms/radiography
Pubmed
Web of science
Open Access
Yes
Create date
24/01/2008 17:20
Last modification date
01/10/2019 6:16
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