This literature review examines the application of the Deep Inspiration Breath Hold (DIBH) technique in breast cancer radiotherapy, focusing on its role in managing respiratory motion and reducing radiation exposure to the heart and lungs, particularly in left-sided breast cancer cases. The review synthesizes findings from various studies published between 2006 and 2017, retrieved from databases such as MedLine and Google Scholar. Key themes include the dosimetric and clinical advantages of DIBH, its impact on patient outcomes and compliance, and the importance of visual coaching in improving the technique's reproducibility. The analysis highlights how DIBH can minimize cardiac complications and improve target coverage, offering valuable insights for optimizing radiotherapy protocols. The review also discusses the limitations of the technique, such as patient compliance and the need for specialized equipment, while emphasizing its potential for improving patient outcomes and reducing treatment-related morbidity. The review also focuses on the role of DIBH for left sided breast cancer patients because such patients are at increased risk of cardiac abnormalities.