Dosimetric Comparison of Doses in Both Positions (Prone and Decubitus) for Patient With Breast Cancer

Study Overview
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Brief Summary
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Compare dosimeters in both positions (prone and decubitus) for each patient

Detailed Description
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Quantitative Physics: dosimetric comparison of doses in target volumes and organs at risk. The technique used is that of which the dose on the organs at risk is as low as possible, and whose dose to the target volume is the closest possible to the prescribed dose (100% of the prescribed dose).

Official Title
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A Feasibility Study of Patient Comfort and Dosimetry Evaluation in Prone Breast Radiotherapy.

Conditions
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Breast Cancer

Intervention / Treatment
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* Radiation: Radiotherapy by Prone and decubitus


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with primary breast cancer and in whom conservative post- surgery radiation therapy for breast cancer is prescribed. Patients aged over 18 years Patients with indication for conservative surgery. Resection should be in healthy margin. Women of childbearing potential must satisfy a negative pregnancy test at the screening visit and use effective contraception as determined by the physician of the patient throughout the study. Exclusion Criteria: Minor Patient Patients whose tumor resection is incomplete Patients with an indication of mastectomy Patients with a history of radiation therapy of the chest Pregnant women, lactating, or of childbearing age without effective contraception. Patients who had more than 4 scanners in one year. ( Scanner cervical , thoracic, or abdominal Patients with an incompatible condition with monitoring protocol (psychiatric disorder, uncontrolled disease). Patient unable to respond to a questionnaire

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Radiotherapy techniques<br>Quantitative Physics: dosimetric comparison of doses in target volumes and organs at risk. The technique used is that of which the dose on the organs at risk is as low as possible, and whose dose to the target volume is the closest possible to the prescribed dose (100% of the prescribed dose) | Radiation: Radiotherapy by Prone and decubitus<br>* Dosimetric comparison of doses in target volumes and organs at risk<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Quantitative Physics: dosimetric comparison of doses in target volumes and organs at risk |  | From baseline to 5 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Quality of Life Questionnaire |  | Baseline and Follow up month 3, 12, 24 and 36 |