Inclusion Criteria:  Any woman between the ages of 50 and 69, from the hospital area of the Reina Sofía University Hospital, invited to the Breast Cancer Early Detection Program, summoned in rooms 2024 and 2001 and who agrees to participate in the study by signing the consent informed. Women studied in the program in the set period and who have previously participated. Women who are studied in the program for the first time in the set period.  Exclusion Criteria:  Women invited to the program who do not agree to enter the research study by signing the informed consent. Women with breast prostheses. Women with symptoms or signs of suspected breast cancer.