March 11, 2021

Foolish misdirection

Nanox stock is up more than 15% today.  The catalyst may have been a nice promo that claims that Nanox, the healthcare disrupter, is about to receive FDA clearance within a month and start distributing its new X-ray device.

Quite interesting, given that Nanox claims that it has not submitted its magic device for FDA clearance yet.  Nanox claims instead that it has submitted another, a "single-source," device that it does not intend to market or ship or distribute or offer for subscription or service.    

Here are some of the factual inaccuracies and false implications in the promo:

  • Nanox has a new kind of X-ray
  • X-rays are kind of boring
  • [X-ray devices] are very expensive
  • MRI devices use or create X-rays
  • A CT scanner costs about a million, 2 million, 3 million dollars
  • Nanox has made a radical new discovery
  • The traditional X-ray devices and CT scanners create X-rays by heating the machine up over 1,000 degrees Fahrenheit, might be 2,000 degrees Fahrenheit
  • X-rays devices and CT scanners are incredibly hot machines and have to be cooled down
  • The expense in X-rays devices and CT scanners is in cooling the devices down
  • Nanox can create X-rays without having to manufacture all this heat and cool the machine down
  • Nanox proposed machine is far cheaper (to manufacture), $10,000 instead of a $1,000,000
  • Nanox will radically disrupt the market, and is also going to expand the market
  • We are going to see a lot more X-rays
  • The proposed Nanox machine (a rudimentary tomosynthesis device) can generate images that are comparable to MRI images or CT images, not just to traditional X-ray or tomosynthesis images.


Update (March 13/14, 2021):    thedudemd  @ Stocktwits disagrees that the factual inaccuracies are factual inaccuracies and argues that 

a)  "Traditional xray tubes used in cts do get incredibly hot; so much so that scanners automatically shut down if tube gets overheated,"  and   

b)  "ct scanners do cost millions of dollars."

Tubes or devices/machines?  The Fool contributor said that the traditional x-ray device or traditional CT scanner was being heated up over 1,000 degrees Fahrenheit, which is clearly not true.  These systems operate at room temperature.

But let's talk tubes.  Both the traditional and the proposed Nanox tubes use the exact same inefficient mechanism of generating x-rays, whereby nearly 99% of the heat is generated at the anode and nearly 99% of the energy used to generate x-rays gets wasted as heat.

Interestingly, the filament in the tiny incandescent Christmas tree lightbulb gets even hotter - 2,200 degrees Kelvin to 3,200 degrees Kelvin -  or 3,500 degrees Fahrenheit to 5,300 degrees Fahrenheit!  Each one filament operates at about 2.5 V consuming about 0.4 W, and there are hundreds of them on the tree.  Christmas trees must get incredibly hot and burn up instantly, no?
  
Photo by Jason  Krieger from FreeImages.com

Regarding costs - maybe the latest and greatest CT scanner could cost over $2 million, but you can buy a used one for $80,000, as described here and here.   Of course, the proposed fake five-source Nanox.Arc is in no way comparable to even the oldest, cheapest and abused CT, as it cannot generate axial slices, even in theory.  Moreover, it is not even submitted for clearance, according to Nanox.  The device that Nanox claims to have submitted for clearance is a single-source device that cannot be cleared.

Update June 3, 2021:  The Nanox single-source device that got cleared was the Nanox.Cart.

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