This report presents a comprehensive overview of the imaging and management of Ductal Carcinoma In Situ (DCIS), using a case study of a 59-year-old patient named Shailey. It begins with an introduction to DCIS, a non-invasive form of breast cancer, and the initial diagnostic steps involving mammography. Due to mammography's limitations, the report emphasizes the role of Magnetic Resonance Imaging (MRI) for accurate diagnosis and pre-surgical planning. The discussion delves into various imaging techniques, including mammography, contrast-enhanced digital mammography (CEDM), ultrasound, and chest CT scans, highlighting their respective advantages and limitations. The report also covers the potential treatments for DCIS, such as mastectomy, breast-conserving surgery (BCS), radiation therapy, and endocrine therapy, with a focus on adjuvant radiation therapy. The report then discusses the follow-up imaging procedures, particularly the use of MRI to monitor the effectiveness of the treatment and detect any recurrence of the lesions. The importance of radiation safety principles, such as ALARP, is also emphasized throughout the report. The report concludes by providing a detailed analysis of the diagnostic and therapeutic approaches for DCIS, providing valuable insights into the patient's journey.