3D Printing Help Surgeons Treat Complicated Heart Defects

A recent study found that supplementing x-rays, MRI, and ultrasounds with a 3D-printed model of a patient's heart helped surgeons perform delicate procedures to repair severe abnormalities.

Most heart surgeons rely on x-ray, MRI, and ultrasound technology to help them prepare for a complicated procedure. According a report by the American Heart Association, new research suggests that 3D-printed models of a patient's heart would boost a surgeon's ability to treat heart abnormalities and birth defects. Unlike the aforementioned trio of resources, a 3D-printed heart model would allow doctors to examine in great detail "complex structural complications in the heart’s chambers that occur when heart disease is present at birth."


From the report:

"Researchers used an inexpensive plaster composite material to create heart models of a 9-month-old girl, 3-year-old boy and a woman in her 20s all of whom had complex congenital heart defects. After studying the models and traditional images, surgeons successfully repaired severe heart abnormalities in all three patients."

...

“'With 3D printing, surgeons can make better decisions before they go into the operating room,' said Matthew Bramlet, M.D., study lead author and assistant professor of pediatric cardiology and director of the Congenital Heart Disease MRI Program at the University of Illinois College of Medicine in Peoria. 'The more prepared they are, the better decisions they make, and the fewer surprises that they encounter.

'When you’re holding the heart model in your hands, it provides a new dimension of understanding that cannot be attained by 2D or even 3D images. What once was used to build trucks, we’re using now to build models of hearts.'”

Read more at the American Heart Association Newsroom

Photo credit: S_L / Shutterstock

Drill, Baby, Drill: What will we look for when we mine on Mars?

It's unlikely that there's anything on the planet that is worth the cost of shipping it back

Surprising Science
  • In the second season of National Geographic Channel's MARS (premiering tonight, 11/12/18,) privatized miners on the red planet clash with a colony of international scientists
  • Privatized mining on both Mars and the Moon is likely to occur in the next century
  • The cost of returning mined materials from Space to the Earth will probably be too high to create a self-sustaining industry, but the resources may have other uses at their origin points

Want to go to Mars? It will cost you. In 2016, SpaceX founder Elon Musk estimated that manned missions to the planet may cost approximately $10 billion per person. As with any expensive endeavor, it is inevitable that sufficient returns on investment will be needed in order to sustain human presence on Mars. So, what's underneath all that red dust?

Mining Technology reported in 2017 that "there are areas [on Mars], especially large igneous provinces, volcanoes and impact craters that hold significant potential for nickel, copper, iron, titanium, platinum group elements and more."

Were a SpaceX-like company to establish a commercial mining presence on the planet, digging up these materials will be sure to provoke a fraught debate over environmental preservation in space, Martian land rights, and the slew of microbial unknowns which Martian soil may bring.

In National Geographic Channel's genre-bending narrative-docuseries, MARS, (the second season premieres tonight, November 12th, 9 pm ET / 8 pm CT) this dynamic is explored as astronauts from an international scientific coalition go head-to-head with industrial miners looking to exploit the planet's resources.

Given the rate of consumption of minerals on Earth, there is plenty of reason to believe that there will be demand for such an operation.

"Almost all of the easily mined gold, silver, copper, tin, zinc, antimony, and phosphorus we can mine on Earth may be gone within one hundred years" writes Stephen Petranek, author of How We'll Live on Mars, which Nat Geo's MARS is based on. That grim scenario will require either a massive rethinking of how we consume metals on earth, or supplementation from another source.

Elon Musk, founder of SpaceX, told Petranek that it's unlikely that even if all of Earth's metals were exhausted, it is unlikely that Martian materials could become an economically feasible supplement due to the high cost of fuel required to return the materials to Earth. "Anything transported with atoms would have to be incredibly valuable on a weight basis."

Actually, we've already done some of this kind of resource extraction. During NASA's Apollo missions to the Moon, astronauts used simple steel tools to collect about 842 pounds of moon rocks over six missions. Due to the high cost of those missions, the Moon rocks are now highly valuable on Earth.


Moon rock on display at US Space and Rocket Center, Huntsville, AL (Big Think/Matt Carlstrom)

In 1973, NASA valuated moon rocks at $50,800 per gram –– or over $300,000 today when adjusted for inflation. That figure doesn't reflect the value of the natural resources within the rock, but rather the cost of their extraction.

Assuming that Martian mining would be done with the purpose of bringing materials back to Earth, the cost of any materials mined from Mars would need to include both the cost of the extraction and the value of the materials themselves. Factoring in the price of fuel and the difficulties of returning a Martian lander to Earth, this figure may be entirely cost prohibitive.

What seems more likely, says Musk, is for the Martian resources to stay on the Red Planet to be used for construction and manufacturing within manned colonies, or to be used to support further mining missions of the mineral-rich asteroid belt between Mars and Jupiter.

At the very least, mining on Mars has already produced great entertainment value on Earth: tune into Season 2 of MARS on National Geographic Channel.

Harvard scientists suggest 'Oumuamua is an alien device

It's an asteroid, it's a comet, it's actually a spacecraft?

(ESO/M. Kornmesser)
Surprising Science
  • 'Oumuamua is an oddly shaped, puzzling celestial object because it doesn't act like anything naturally occurring.
  • The issue? The unexpected way it accelerated near the Sun. Is this our first sign of extraterrestrials?
  • It's pronounced: oh MOO-uh MOO-uh.
Keep reading Show less

Study: The effects of online trolling on authors, publications

A study started out trying to see the effect of sexist attacks on women authors, but it found something deeper.

Maxpixel
Surprising Science
  • It's well known that abusive comments online happen to women more than men
  • Such comments caused a "significant effect for the abusive comment on author credibility and intention to seek news from the author and outlet in the future"
  • Some news organizations already heavily moderate or even ban comments entirely; this should underscore that effort
Keep reading Show less