Arizona Gov. Jan Brewer signed a breast density bill (SB 1225) into law on April 17, making the state the 15th in the U.S. to enact breast density legislation. The law will become effective October 1.
Passage of the law, which requires reporting of dense breast tissue revealed at mammography, was led by Scottsdale radiologist Dr. Nicole Saphier and several advocates, including Are You Dense Advocacy, the organization reported.
Are You Dense Advocacy is working with advocates in 13 other states with density reporting laws in the 2014 legislative session, the organization said. A federal density reporting bill was introduced in October 2013 in the U.S. House of Representatives with plans for a Senate companion bill introduction this spring.
Connecticut became the first state to require reporting with passage of its breast density law in 2009.










![A normal mammogram confirmed by three-year radiologic follow-up illustrates reader-marked regions of interest (ROIs) during (A) unaided (round 1) and (B) artificial intelligence (AI)–assisted (round 2) reading. Each colored dot represents an ROI for recall by a human reader. Readers could mark more than one ROI per case, represented by multiple dots of the same color. During AI-assisted reading, the AI system displayed three visible prompts: two with suspicion of malignancy scores of 35% (left mediolateral oblique [L MLO] and craniocaudal [L CC]) and one with a suspicion of malignancy score of 10% (right craniocaudal [R CC]), shown as polygonal overlays. Without AI, six of 10 readers (60%) marked a false-positive ROI. With AI assistance, this fell to two of 10 (20%). R MLO = right mediolateral oblique.](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/07/2026-07-14-radiology-mammogram-ai-auto-bias.H0bYO8QlWs.jpg?auto=format%2Ccompress&fit=crop&h=112&q=70&w=112)






