Females ≥18 years of age

Undergoing annual breast MRI because of a high risk of breast cancer due to any of the following:

* Known BRCA1 or BRCA2 mutation carriers, or is untested for BRCA but is a first degree relative of a BRCA mutation carrier

* History of radiation to the chest between 10-30 years of age (e.g. Hodgkin's Disease)

* History of Cowdens or Li Fraumeni Syndrome

* A first degree relative with Cowdens or Li Fraumeni Syndrome

* Prior breast biopsy positive for lobular carcinoma in situ (LCIS) or atypical lobular hyperplasia or atypical ductal hyperplasia (ADH)

* Family history consistent with a hereditary breast cancer syndrome and estimated personal lifetime cancer risk ≥25% using the IBIS risk evaluator

Study To Investigate the Feasibility and Safety of A Dedicated High Resolution Nuclear Breast Imaging Camera