DR Photoncounting (image) Radiological Society of North America Caption Two-view screening mammograms obtained with the DR photoncounting system show an indistinct mass in the left lower outer quadrant (arrow). The diagnosis was invasive ductal carcinoma, 7 mm in diameter, as seen on the (a) left craniocaudal image, (b) left mediolateral oblique image, and (c) zoomed in craniocaudal image of the lesion. Credit Radiological Society of North America Usage Restrictions May use with credit Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.