A Study of Disappearing Markers for Daily Radiation Treatment Delivery for Breast Cancer Patients.

Inclusion Criteria

• •Participant must have histologically or cytologically confirmed stage 0 ductal carcinoma in situ (DCIS), I, II or III breast cancer and be planning to undergo radiation therapy (RT) after surgery
• •Participants must be 18 years of age or older
• •Participant must be able to understand a written informed consent document and be willing to sign it
• •Participant must be assigned female at birth
• •Participant must have a Karnofsky performance score of greater than or equal to 70%
• •Women of child bearing potential must agree to avoid becoming pregnant through defined periods during the course of RT and must meet one of the following:
• •* Surgically sterile (hysterectomy, bilateral oophorectomy, or bilateral salpingectomy
• •* Post-menopausal, defined as no menses for at least 12 months prior to the screening visit without alternative medical causation
• •* Agree to practice true abstinence from sexual intercourse
• •* Not in a sexual relationship in which the may become pregnant (i.e., same-sex relationship)
• •* If they are childbearing potential, agree to use at least one highly effective and at least one additional method of contraception.
• •For the first six participants only: Participant must have a Fitzpatrick Skin Tone Scale of 5 or 6