Dosimetric Comparison of Target Volume, Heart and Left Lung in Post Mastectomy Radiotherapy (RT) of Left Sided Breast Cancer by Free Breathing (FB) Versus Deep Inspiration Breath Hold (DIBH) Technique

Summary

Breast cancer is a leading cancer among Bangladeshi female. For breast cancer, there are different available treatment options according to the stage of disease. One of the important ones is radiotherapy (RT). Various side effects can occur during and after RT. Among the late side effects, numerous cardiac and pulmonary problems are significant specially in case of left sided breast cancer. In such cases, patients are being cured from cancer but the treatment itself endangering patients' general health and wellbeing by increasing risk of future life threatening cardiac and pulmonary diseases. Studies from around the world have shown that, during RT of left sided breast cancer, holding the breath for certain time after deep inspiration can reduce the radiation doses to heart and left lung without compromising doses to the chest wall. As a result, they can avoid the extra risk of treatment related late toxicities. This study will look at the utility and efficacy of Deep Inspiration Breath Hold (DIBH) RT over free breathing (FB) RT in reducing the heart and left lung doses without compromising the dose to the target volumes in left sided post mastectomy breast cancer patient, which is the main objective of this study.

Conditions

• Carcinoma Breast
• Radiation Therapy for Primary Breast Cancer
• Radiation Tolerance
• Radiation Induced Cardiac Damage
• Radiation Induced Lung Injury (RILI)
• Radiotherapy; Adverse Effect
• Radiotherapy, Adjuvant

Interventions

RADIATION

Deep inspiration breath hold radiotherapy

Participants will be trained for 2-3 days for obtaining the desired breathing cycle by trained technologists. No extra equipment will be needed. At first, they will be assured and asked to relax. Then instructed to breath in and out twice followed by a slow, deep breath in to a comfortable higher level than normal and to hold it for at least 20 seconds then again breath normally. Once they are ready with expected breath holding, simulation will be done. Treatment will also be given in this breath holding position.

RADIATION

Free breathing radiotherapy

Patient will be advised for free breathing during simulation and treatment.

Sponsors & Collaborators

• Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh

  collaborator OTHER

• Nishat Tasnim

  lead OTHER

Principal Investigators

• Most. Rokaya Sultana, MBBS, MD · Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh

Study Design

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

FEMALE

Healthy Volunteers

No

Timeline & Regulatory

Start

2024-07-17

Primary Completion

2025-07-31

Completion

2025-07-31

FDA Device

Yes

Countries

• Bangladesh

Study Locations