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

Détails

ID Serval
serval:BIB_0DD4945B41E1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The reasons for discrepancies in target volume delineation : a SASRO study on head-and-neck and prostate cancers.
Périodique
Strahlentherapie und Onkologie
Auteur(s)
Jeanneret-Sozzi W., Moeckli R., Valley J.F., Zouhair A., Ozsahin E.M., Mirimanoff R.O.
ISSN
0179-7158
Statut éditorial
Publié
Date de publication
2006
Peer-reviewed
Oui
Volume
182
Numéro
8
Pages
450-457
Langue
anglais
Notes
Publication types: Case Reports ; Comparative Study ; Journal Article
Résumé
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).
Mots-clé
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
Création de la notice
24/01/2008 18:20
Dernière modification de la notice
03/03/2018 13:40
Données d'usage