Evaluation of the Impact of Empty Versus Full Bladder in Patients With Prostate Cancer, RELIEF Trial
Public ClinicalTrials.gov record NCT06037863. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
RELIEF: Randomized EvaLuation of the Impact of Empty Versus Full Bladder
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This clinical trial evaluates the effects of an empty bladder versus (vs.) a full bladder prior to undergoing a computed tomography (CT) simulation for radiation therapy in patients with prostate cancer. Radiation therapy is a commonly used treatment for men diagnosed with prostate cancer. Prior to initiation of a course of radiotherapy, all patients with prostate cancer undergo a CT simulation that allows for computer-based optimization of radiation dose delivery to the target tissue (i.e., prostate) and simultaneous dose minimization to surrounding normal tissues, such as bladder and rectum. Patients are typically given standard instructions for preparation to present with a reproducible full bladder at the time of CT simulation and for each subsequent radiation treatment appointment. The goal of bladder distension is to displace portions of the bladder and bowel away from the highest dose radiation delivery to the prostate. However, as typical urinary symptoms related to radiotherapy develop during treatment, some patients are unable to reproduce the bladder distention achieved at the time of CT simulation. This can result in increased daily treatment time, sub-optimal reproducibility of patient internal anatomy, and increased stress for patients and radiation therapy staff. This trial will evaluate the effects of an empty bladder vs. a full bladder prior to CT simulation and radiation therapy in patients with prostate cancer and how it effects patient reported outcomes.
Study identification
- NCT ID
- NCT06037863
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 168 participants
Conditions and interventions
Conditions
Interventions
- Best Practice Other
- Computed Tomography Procedure
- Electronic Health Record Review Other
- Imaging Procedure Procedure
- Questionnaire Administration Other
- Radiation Therapy Radiation
Other · Procedure · Radiation
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- Male
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 19, 2023 (Actual)
- Primary completion
- Feb 23, 2026 (Actual)
- Completion
- Feb 23, 2026 (Actual)
- Last update posted
- Oct 15, 2026
2023 – 2026
United States locations
- U.S. sites
- 7
- U.S. states
- 4
- U.S. cities
- 7
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Mayo Clinic in Arizona | Scottsdale | Arizona | 85259 | — |
| Mayo Clinic in Florida | Jacksonville | Florida | 32224-9980 | — |
| Mayo Clinic Health System in Albert Lea | Albert Lea | Minnesota | 56007 | — |
| Mayo Clinic Health Systems-Mankato | Mankato | Minnesota | 56001 | — |
| Mayo Clinic in Rochester | Rochester | Minnesota | 55905 | — |
| Mayo Clinic Health System-Eau Claire Clinic | Eau Claire | Wisconsin | 54701 | — |
| Mayo Clinic Health System-Franciscan Healthcare | La Crosse | Wisconsin | 54601 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06037863, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Oct 15, 2026 · Synced Oct 18, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT06037863 live on ClinicalTrials.gov.