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CT–MRI image fusion for delineation of volumes in three-dimensional conformal radiation therapy in the treatment of localized prostate cancer

¹ Department of Radiation Oncology and Diagnostic Imaging, University of Turin, Turin and ² Medical Physics Division, S. Giovanni Battista Hospital, Via Genova 3, 10126 Turin, Italy

View larger version (135K): [in a new window]   Figure 1. CT–MRI image fusion: delineation of the clinical target volume (CTV) and critical organs. Red line, CT CTV; yellow line, MRI CTV; blue line, rectum (CT); green line, bladder (CT).

View larger version (17K): [in a new window]   Figure 2. The relationship of CT–MRI defined prostate dimension (mm) in the anterior–posterior direction.

View larger version (16K): [in a new window]   Figure 3. The relationship of CT–MRI defined prostate dimension (mm) in the lateral–lateral direction.

View larger version (18K): [in a new window]   Figure 4. The relationship of CT–MRI defined prostate dimension (mm) in the superior–inferior direction.

View larger version (16K): [in a new window]   Figure 5. The relationship of CI–MRI defined prostate volume (cm3).