Impact of Bladder Depletion on Mesorectal Movements During Radiotherapy in Rectal Cancer — MESORECT-VV  

Rectal Cancer Clinical Trial

Official title: Impact of Bladder Depletion on Mesorectal Movements During Radiotherapy in Rectal Cancer

Status Recruiting

Clinical Trial Summary

This trial is assessing how Bladder filling variations and thus mesorectal movements are less when radiotherapy treatment is received with an empty bladder in rectal cancer

Clinical Trial Description

The purpose of this study is to show that the variations of bladder volume and mesorectal movements are less with empty versus filled bladder in rectal cancer. In this study, patient will be treated with 3D conformal radiotherapy (3D-CRT) radiotherapy with a filled bladder condition, as per standard care, in supine position. A total dose of 45 or 50 Gy in 25 fractions, 5 fractions per week is received. A Chest, abdomen and pelvis imaging will be performed before treatment start. Patients receive planning CT scan with filled bladder and then with empty bladder on the same day. Only planning CT scan with filled bladder will be used patient treatment. During radiotherapy treatment, patient will receive CBCTs with filled ans empty bladder on Day 1 ; 2 and 3 on the first week and once a week after. Multiple parameters will be assessed before treatment (using planning CT scan) and during radiotherapy treatment (CBCTs) in empty ans filled bladder conditions : Bladder volume, mesorectal movements. A dosimetric study will be performed in Intensity-modulated radiotherapy (IMRT) in empty and filled bladder conditions ;

Related Conditions & MeSH terms

• Rectal Cancer
• Rectal Neoplasms

• NCT number: NCT04323722
• Study type: Interventional
• Source: Institut Cancerologie de l'Ouest
• Contact: Emmanuel RIO, MD
• Phone: +33240679900
• Email: emmanuel.rio@ico.unicancer.fr
• Status: Recruiting
• Phase: N/A
• Start date: September 8, 2020
• Completion date: October 2024