Greg Freiherr has reported on developments in radiology since 1983. He runs the consulting service, The Freiherr Group.

Blog | Information Technology | September 22, 2016

Sonographic Smartphones: When Will the Potential Be Met?

Sonographic Smartphones: When Will the Potential Be Met?

Already last century (it feels strange writing that) someone, somewhere realized that laptops had enough horsepower to run simple ultrasound machines. Not long after that transducers were plugged in and … voila! The first consumer-based ultrasound scanner was born.

They were cumbersome, certainly by today’s standards. And underpowered. To say they never “caught on” would be generous. (I never heard of anyone using one. Or at least admitting to doing so.) But they were the beginning of a concept now being expressed in smartphone-powered sonography systems. With one notable exception, smartphone sonography has failed to live up to its potential.

One example is iBABY. Billed as a home ultrasound device, its vendor aims to “enhance the pregnancy experience directly from your phone.” Just connect iBABY and iPhone and the combination “can capture ultrasound images of an unborn baby,” according to the company, which suggests that, using Wi-Fi or a built-in printer, “doctors, family members and friends” can share in the images. “On top of all that,” wrote the vendor, “the device also doubles as a baby monitor after the little one comes home!”

 

Caution Consumers

Few — if any — healthcare professionals would recommend the use of ultrasound by the average consumer. Caution about fetal ultrasound is warranted especially in the wake of a study published Sept. 1 in the journal Autism Research, which suggests that first-trimester fetal ultrasound may contribute to the severity of autism symptoms. “These results also add weight to on-going concerns expressed by the FDA about non-medical use of diagnostic ultrasound during pregnancy,” the authors wrote in their paper.

Unlike iBaby, another smartphone-compatible scanner, dubbed MobiUS, is not being marketed to consumers. Rather its market is comprised of healthcare workers in countries where ultrasound technology is scarce. For the time being, the scanner comes with its own Windows table or smartphone. But future versions may be compatible with Apple and Android operating systems.

On the lowest fringes of low-end technology — actually more like joke technology — is BabyUltraSound, a downloadable app that runs on the iPhone. “Launch the app and put your Iphone (sic) against your belly or your girlfriend's belly to see if you/she is pregnant,” writes the developer of this app. “What a great way to make your girlfriend jump with surprise when she sees she is pregnant!!!”

This is wrong on several levels. Most fundamentally, the lack of a transducer makes it impossible for BabyUltraSound to generate an ultrasound image. But, before becoming irate (as I did at first), be sure to read the app description in its entirety, particularly the ending, which says “PS: Of course Baby UltraSound is not a real ultrasound examination device and should only be used for joke purposes.”

Enough said.

 

Real Clinical Ultrasound

But not all smartphone-based ultrasound is a joke or dangerous. At the high-end of smartphone-compatible ultrasound is Philips’ Lumify. Launched at the end of 2015, Lumify is part app, part hardware. The app, which can be downloaded over the internet, works with a smartphone-compatible transducer, which Philips provides to subscribers for a monthly fee.

“With Lumify, high-quality portable ultrasound is available almost anywhere. Just subscribe, download the Lumify app, plug in the transducer, and you're set,” proclaims the Philips Lumify webpage. The company says Lumify allows physicians to “meet patients at the point-of-care, make a faster diagnosis, and deliver care whenever it’s needed.”

In the context of what smartphones might do in radiology, the Philips application illustrates the already substantial computing power being tucked in our pockets. This innovative app could be the forerunner of many such devices, whose use will be made possible by the continuing evolution of smartphones. Value medicine, with its unprecedented emphasis on cost, may provide the spur needed for more Lumify-like devices.

The widespread availability of smartphones, cellular networks, and Wi-Fi made the use of smartphones for the display of medical images possible. The widespread availability of smartphones could work in much the same way for smartphone-based ultrasound scanners.

Of course, unlike the transmission and display of medical images, smartphones inherently lack some of the hardware needed to perform sonography. That “peripheral” — the transducer — could come at a hefty price, although Philips has overcome this hurdle through its subscription business model.

Less tractable may be regulatory considerations. The makers of zero-footprint viewers, for example, worked for years to get their products on the U.S. market. The FDA is sure to scrutinize any medical claims for sonographic smartphones. (Aside from an inference that IBABY images might be shared with “doctors,” no medical claims for that product are apparent. And MobiUS’ developers are looking at markets outside the U.S.)

But again, Philips has worked through the challenge to bring its Lumify product to the U.S. market. So it falls to Philips to advocate the use of smartphone sonography. And the company has done pretty well.

For Lumify even to function in the rarified clinical atmosphere of diagnostic scanners is an accomplishment in itself, one that directly addresses the potential of smartphones in routine clinical practice.

 

Editor's note: This is the third blog in a four-part series on smartphones and radiology. The first blog, “How Smartphones Can Make Radiologists Even Smarter,” can be found here. The second blog, “Call Me: How Cell Phones Can Make A Difference in Radiology,” can be found here.

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