J Med Phys Close
 

Figure 1: Increase in the distance between the posterior edge of the CTV and the anterior rectal wall in 15 patients due to changes in the treatment position from supine to prone measured at seminal vesicle and prostate levels. Positive values indicate displacement of the CTV away from the rectum when the patient is in the prone position compared to the supine position. CTV: Clinical target volume

Figure 1: Increase in the distance between the posterior edge of the CTV and the anterior rectal wall in 15 patients due to changes in the treatment position from supine to prone measured at seminal vesicle and prostate levels. Positive values indicate displacement of the CTV away from the rectum when the patient is in the prone position compared to the supine position. CTV: Clinical target volume