Evaluation of Bladder Volumes in Patients Receiving Radiotherapy to the Rectum, Using Kilovoltage Cone-beam Imaging

Evaluation of Bladder Volumes in Patients Receiving Radiotherapy to the Rectum, Using Kilovoltage Cone-beam Imaging

The purpose of this study is to implement and access a newly developed bladder filling protocol for patients receiving radiotherapy for rectal cancer using imaging on the treatment unit.

Inclusion Criteria:

• Patients receiving radical radiotherapy to rectal malignancies.
• Age > 18 years old
• No previous lower GI radiotherapy
• Written informed consent according to good clinical practice (GCP) and national / local regulations.

Exclusion Criteria:

• Patients receiving palliative radiotherapy to rectal malignancies.
• Patients receiving radical short course preoperative radiotherapy for rectal malignancies.
• Patients unable to give informed consent.