Breast cancer is the most common cancer in women. Because mammography is not sensitive in women with dense breasts, MRI of the breast has become the study of choice, as tumors usually enhance after contrast is injected. MRI of the breast is the recommended study of choice for women whose lifetime risk for developing breast cancer is 25% and higher. Other indications are in women with dense breast and biopsy-proven cancer in order to rule out multicentricity or multifocality in the ipsilateral or contralateral breast. MRI of the breast can assist to diagnose occult carcinoma in patients with metastatic axillary lymph nodes. Finally, MRI can be used to determine the response of breast cancer to chemotherapy. Advanced techniques such as diffusion-weighted imaging and MR spectroscopy (MRS) can be used to elicit information about water motion and metabolite presence in vivo without the need of invasive techniques. Suspicious lesions can be biopsied or localized with accuracy using MR guidance.
KeywordsBreast MRI MRI sequences Cancer Benign diseases