Interobserver variation in target volume for salvage radiotherapy in recurrent prostate cancer patients after radical prostatectomy using CT versus combined CT and MRI: a multicenter study (KROG 13-11)
Radiation Oncology Journal
;
: 11-16, 2018.
Artículo
en Inglés
| WPRIM
| ID: wpr-741933
ABSTRACT
PURPOSE:
To investigate interobserver variation in target volume delineations for prostate cancer salvage radiotherapy using planning computed tomography (CT) versus combined planning CT and magnetic resonance imaging (MRI). MATERIALS ANDMETHODS:
Ten radiation oncologists independently delineated a target volume on the planning CT scans of five cases with different pathological status after radical prostatectomy. Two weeks later, this was repeated with the addition of planning MRI. The volumes obtained with CT only and combined CT and MRI were compared, and the effect of the addition of planning MRI on interobserver variability was assessed.RESULTS:
There were large differences in clinical target volume (CTV) delineated by each observer, regardless of the addition of planning MRI (9.44–139.27 cm³ in CT only and 7.77–122.83 cm³ in CT plus MRI) and no significant differences in the mean and standard deviation of CTV. However, there were decreases in mean volume and standard deviation as a result of using the planning MRI.CONCLUSION:
This study showed substantial interobserver variation in target volume delineation for salvage radiotherapy. The combination of planning MRI with CT tended to decrease the target volume and the variation.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Próstata
/
Prostatectomía
/
Neoplasias de la Próstata
/
Radioterapia
/
Imagen por Resonancia Magnética
/
Tomografía Computarizada por Rayos X
/
Variaciones Dependientes del Observador
Tipo de estudio:
Ensayo Clínico Controlado
Límite:
Humanos
Idioma:
Inglés
Revista:
Radiation Oncology Journal
Año:
2018
Tipo del documento:
Artículo
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