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https://www.engadget.com/…/3D-printed-brain-medical-imagin…/


There are almost limitless possibilities when it comes to 3D printing. Design your own color-changing jewelry? Fine. Fabricate your own drugs? No problem. Print an entire house in under 24 hours? Sure! Now, researchers have come up with a fast and easy way to print palm-sized models of individual human brains, presumably in a bid to advance scientific endeavours, but also because, well, that’s pretty neat.

In theory, creating a 3D printout of a human brain has been done before, using data from MRI and CT scans. But as MIT graduate Steven Keating found when he wanted to examine his own brain following his surgery to remove a baseball-sized tumour, it’s a slow, cumbersome process that doesn’t reveal any important areas of interest.

MRI and CT scans produce images with so much detail that objects of interest need to be isolated from surrounding tissue and converted into surface meshes in order to be printed. This involves a radiologist manually tracing the desired object onto every single image “slice” of the brain, or it can be done via automatic thresholding, where a computer converts areas that contain grayscale pixels into either solid black or solid white pixels, based on a shade of gray that is chosen to be the threshold between black and white. But since medical imaging data often contains irregularly-shaped objects and lacks clear borders, features of interest are usually over- or under-exaggerated, and details are washed out.

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BARCELONA: In a bid to take the 3D printing industry to an entirely new level, global printing and PC major HP Inc has announced that its 3D metal printing solutions are set to enter the market later this year, thus giving the $12 trillion global manufacturing opportunity a new push.

HP, which entered the Additive Manufacturing (AM) field in 2016, currently has industrial-grade Multi Jet Fusion (MJF) 3D printing solutions that produce polymer (plastic)-based products.

“We will do an announcement on metal printing later this year and unveil to the world what kind of technology we will use. There are several metal technologies out there and we will share which we have zeroed in on to move forward and invest further,” Ramon Pastor, Vice President and General Manager of Multi Jet Fusion, HP, told IANS.

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Sugar, that amazingly sweet treat some of us just can’t get enough of, has long been the fascination of children (and those with a child-like sweet tooth).

Its ability to be melted down into a glass-like substance enables confectionery artists to create tasty displays worthy of museums, or being served as a 3D printed dessert.

In fact, the same properties which make sugar so wonderful for cooking and designing also make it great for science.

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When history’s pilgrims and pioneers arrived in a new territory, they used the land’s natural resources to build their settlements. Space colonists, on the other hand, will have to bring materials from Earth and assemble them on Mars. Andrew Rush, president and CEO of space-based manufacturing firm Made In Space, believes the process of creating off-world infrastructure will be similar to building IKEA furniture. Only the parts will be made with an advanced 3D printer and put together by an autonomous robot.

“We think the future of in-space operation is one of manufacturing and assembly, just like how you built the table you’re sitting on right now,” Rush says. “That table is a multi-material object, and its pieces were all manufactured in different ways. I don’t think space colonies are going to take a different approach.”

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After two years in development, Project MELT (Manufacturing of Experimental Layer Technology) has resurfaced with a prototype microgravity 3D printer.

Made for the European Space Agency (ESA) the Additive Layer Manufacturing (ALM) breadboard machine is designed to 3D print high performance polymers aboard the International Space Station (ISS) and other off-world locations.

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