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Purpose: Currently, three-dimensional conformal radiation therapy (3D-CRT) planning relies on the interpretation of computed tomography (CT) axial images for defining the clinical target volume (CTV). This study investigates the variation among multiple observers to define the CTV used in 3D-CRT for prostate cancer.Methods and Materials: Seven observers independently delineated the CTVs (prostate...
Purpose: Limited data are available regarding the definition of the target volume for post-operative radiation therapy after a radical prostatectomy. In the case of definitive external beam radiation therapy one can visualize the prostate and seminal vesicles. In the post-operative setting these structures are absent and identification of the prostatic bed and peri-prostatic tissues is less apparent...
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