Hears the pitch: Research team invents a new mode of photoacoustic imaging

Did you know that music and diagnostic imaging have something in common? Sounds have a lower or higher pitch depending on the size of the object that creates them. Tubas and double basses are big and produce deep low-pitch sounds, while flutes and violins are small and produce high-pitched sounds. What's interesting is that the same effect occurs when biological structures like cells or tissues emit sound—the pitch varies with size.

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