What's inside a Philips curved array ultrasound probe? Multi-element ceramic transducers: https://pubs.rsna.org/doi/pdf/10.1148/radiographics.13.5.8210599 Previous video Ultrasound machine teardown:

Complete teardown of an ATL/Philips HDI 3000 ultrasound machine. Testing video: https://www.youtube.com/watch?v=JJwxFFpnt0M Probe teardown: https://www.youtube.com/watch?v=lmy8J8n9wPU Time Gain Con