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Brief Title: Radiation Dosimetry Study Comparing 2 Different Patient Setups in Anal/Rectal Cancer Patients
Official Title: Genital Drop Technique With Intensity-Modulated Radiation Therapy (IMRT) in Male Anal and Distal Rectal Cancer Patients: A Dosimetric Comparison
Study ID: NCT00693173
Brief Summary: The study compares two patient setups (Standard Prone vs. Genital Drop Technique) with identical radiation treatment technique and parameters. After the two setups have been planned, the treating faculty reviews the setups and will choose the setup he feels that will give the patient improved dosimetry to the local regions and hopefully reduce toxicity and improve treatment tolerability.
Detailed Description: This is a study of two different setups when treating a patient with standard of care radiation doses. The study compares two patient setups (Standard Prone vs. Genital Drop Technique) with identical radiation treatment technique and parameters. After the two setups have been planned, the treating faculty reviews the setups and will choose the setup he feels that will give the patient improved dosimetry to the local regions and hopefully reduce toxicity and improve treatment tolerability. Patients will not be randomized or stratified by demographic or disease risk assessment, but treatment will be tailored to stage specific current standards of care. An extra (non standard of care) CT is required to analyze the data.
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: MALE
Healthy Volunteers: No
The University of Texas Medical Branch at Galveston, Galveston, Texas, United States
Name: Grant R. Seeger, MD
Affiliation: The University of Texas Medical Branch at Galveston
Role: PRINCIPAL_INVESTIGATOR