Clinical target volume definition for glioblastoma radiotherapy planning: magnetic resonance imaging and computed tomography
Clin. transl. oncol. (Print)
; 15(9): 754-758, sept. 2013. tab, ilus
Article
in En
| IBECS
| ID: ibc-127496
Responsible library:
ES1.1
Localization: BNCS
ABSTRACT
PURPOSE: To assess the differences between the target delineation using computed tomography (CT) and imaging fusion CT/magnetic resonance imaging (MRI) for the radiotherapy planning of glioblastoma. METHODS: One hundred-twenty gross tumor volume and clinical target volume on CT and MRI (GTVCT/CTVCT, GTVMRI/CTVMRI, respectively) were contoured and evaluated. The treatments planning (total dose 60 Gy) based on CTVCT were analysed in terms of percentage of CTVCT and CTVMRI receiving 95 % of the prescribed dose (V95-CTVCT, V95-CTVMRI). RESULTS: GTVs and CTVs contoured on MRI were significantly larger than those delineated on CT (p = 0.0003, p = 0.0006, respectively). Nighty-two percent of CTVCT was coincident with the CTVMRI and 8 % was normal tissue; 20 % of CTVMRI, considered as tumor volume, was not included on CTVCT. The V95-CTVMRI was significantly lower than the V95-CTVCT (p = 0.0005). CONCLUSIONS: In the delineation of glioblastoma target volume, fusion CT/MRI was preferred. The CT only is insufficient for the CTV dose coverage (AU)
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Collection:
06-national
/
ES
Database:
IBECS
Main subject:
Glioblastoma
Type of study:
Diagnostic_studies
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
Clin. transl. oncol. (Print)
Year:
2013
Document type:
Article