Comparison of the Philips MicroDose Tomosynthesis System to 2D Digital Mammography

The study will be performed in two phases: Image Accrual and Image Reading.

Approximately 800 women who fulfill all inclusion and exclusion criteria will be enrolled in
chronological order from up to 3 different US sites with one study investigator for each
site. Two cohorts of patients will be enrolled (i.e., Biopsy and Screening Cohorts). Paired
sets of a standard 4-view exam will be collected both from Philips Tomosynthesis system
(Tomosynthesis and synthetic 2D images) and a FDA-cleared FFDM system. All enrolled cases
will be quality controlled for completeness of image and patient information.

The reading portion of the study will include approximately 300 normal cases (including some
cases determined to be normal after call back after screening mammography), 65 cancer cases,
and 40 biopsy proven benign cases.

The primary objective of the study is to compare the safety and clinical performance of the
Philips MicroDose Tomosynthesis system (Tomosynthesis and synthetic 2D) images to
conventional 2D mammography images (FFDM).

Inclusion Criteria:

- Patient is female and at least 40 years of age

- No contraindication for routine bilateral mammography

Screening Cohort

- Patient presents for a routine screening mammogram Biopsy Cohort

- Patient is scheduled for a biopsy

- Patient has a screening detected abnormality

Exclusion Criteria:

- Patient is pregnant or believes she may be pregnant; OR,

- Patient is breast feeding; OR

- Patient is unable or unwilling to give informed consent, including consent to reuse
data for future research; OR,

- Patient has breast implants; OR

- Patient has previous surgical biopsy; OR

- Patient has previous breast cancer; OR

- Patient presented to screening with clinical symptoms (e.g. palpable lump, nipple
discharge, nipple retraction, skin irritation or dimpling)