- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03259828
Sigmoid Colon Organ Motion in Radiotherapy
Interfraction and Intrafraction Organ Motion of the Sigmoid Colon in Patients With Colorectal Cancer Undergoing Adjuvant Radiotherapy
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Day-to-day positioning variations contribute to uncertainty in radiotherapy. The International Commission on Radiation Units and Measurements (ICRU) report 62 recommended a margin added to the clinical target volume (CTV) to produce the planning target volume (PTV). In ICRU report 83, this concept is further extended and refined to yield the internal target volume (ITV), which is defined as CTV plus a margin to account for uncertainty within the patient. Image-guided radiotherapy (IGRT) has been developed as a method to lower the margin required in PTV expansion. In current practice, IGRT methods mostly rely on bony anatomy alignment. Due to its nature, internal organ motion cannot be compensated by IGRT. Therefore, an ITV expansion is still required. The optimal ITV expansion margin depends on the magnitude of internal organ motion; the smallest margin that provides adequate coverage is preferred.
In this study, we aim to quantify organ motion of the sigmoid colon anastomosis site during radiotherapy treatment, including movement between fractions (interfraction) and movement within the same fraction (intrafraction).
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Tainan, Taiwan, 704
- National Cheng Kung University Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients with pathologically confirmed sigmoid colon cancer, who have received surgical excision (AR or LAR).
- Anastomosis of the colon must be performed with a surgical stapler, with the staple visible on CT imaging.
Exclusion Criteria:
- Gross recurrent disease (defined as visible mass on CT imaging) in the pelvis.
- Other malignancy within the pelvic cavity.
- Previous surgery to the pelvic cavity other than AR/LAR.
- Pregnant or lactating females.
- Subjects who, in the opinion of the Investigator, may be non-compliant with study schedules or procedures.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Adjuvant image-guided radiotherapy
Adjuvant radiotherapy with image guidance via cone beam computed tomography.
Treatment is identical to the current standard of care.
|
Image-guided adjuvant radiotherapy to the sigmoid colon surgical tumor bed and pelvic regional lymph nodes: 45-50.4
Gy in 1.8 Gy/fraction
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Interfraction sigmoid colon organ motion
Time Frame: 90 days
|
Offset of the sigmoid colon staple site in three axes (anterior-posterior, lateral, and cranial-caudal) compared to simulation CT
|
90 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Intrafraction sigmoid colon organ motion
Time Frame: 90 days
|
Offset of the sigmoid colon staple site in three axes (anterior-posterior, lateral, and cranial-caudal) between pre-treatment cone beam computed tomography (CBCT) and post-treatment CBCT
|
90 days
|
Setup errors
Time Frame: 90 days
|
Offset of couch (set-up error) when matching the pre-treatment CBCT with simulation CT
|
90 days
|
Collaborators and Investigators
Investigators
- Principal Investigator: Mu-Hung Tsai, MD, National Cheng-Kung University Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- A-BR-106-037
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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