The ultrasound device, invented in the 1950's, used to be as large as a refrigerator, but ultrasound machines rapidly grew smaller and more powerful as time progressed. “Many authors have argued that ultrasound has become the stethoscope of the 21 st century,” Narula said. Because of the hefty price tag of the smaller, portable ultrasound devices, most doctors do not have one.The cost of one of these medical marvels is typically $8,000 to $10,000.
These pocket-sized ultrasound machines look similar to smartphones, and can diagnose heart, lung and other problems more accurately than traditional stethoscopes, said doctors writing in an editorial published in the journal Global Heart.
Ultrasound has enjoyed an enthusiastic reception by pregnant women. In addition to revealing the baby's health, the images themselves provide a keepsake. "Overwhelmingly, pregnant women expect to be scanned, and are moved and excited by seeing the foetus,"Source.
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