Key Takeaways

Mammograms can miss up to half of breast cancers in women with dense breast tissue, and insurance typically won't cover breast cancer screening for women under 40.

A new startup called BeSound plans to offer photoacoustic ultrasound as a radiation-free alternative for earlier detection.

However, there's no clinical evidence on whether photoacoustic ultrasound is more accurate than mammography.

Breast cancer death rates have dropped by more than half over the past 50 years, in part thanks to better screening methods that help clinicians detect and treat the disease earlier.

For women with dense breast tissue, there’s still room for improvement. Mammograms don’t always detect abnormalities in women with dense breasts. Meanwhile, women younger than 40 who are more likely to

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