New Delhi, June 11 -- The hardest part of reading an ultrasound has never been the machine. It has been the brain behind it.

the distance between a student squinting at a screen and a veteran who sees structure where others see noise - is also a healthcare bottleneck, one that slows the training pipeline at precisely the moment an aging population is demanding more imaging procedures than the system can provide.

Researchers at the Massachusetts Institute of Technology think they have found a way around it. The system they published Wednesday in Nature Communications Engineering replaces the mental reconstruction entirely. Instead of teaching trainees to imagine a three-dimensional structure from a two-dimensional image, it shows them th...