Sealed Packs of Pokémon Cards Give Up Their Secrets Without Opening Them https://hackaday.com/2024/07/20/sealed-packs-of-pokemon-cards-give-up-their-secrets-without-opening-them/ #computedtomography #MachineLearning #ctscanner #ToyHacks #Science #pokemon #x-ray
#computedtomography
Looking Inside a 3D Printer Nozzle with Computed Tomography https://hackaday.com/2023/09/28/looking-inside-a-3d-printer-nozzle-with-computed-tomography/ #computedtomography #3dPrinterhacks #3dprinter #printhead #extruder #meltzone #tungsten #CATscan #hotend #hips #ct
#MRI-guided #biopsy should be considered as an alternative to more established modalities of imaging guidance, such as #ultrasound or #ComputedTomography. (Luca Ginanni Corradini et al.)
🔗 https://link.springer.com/article/10.1007/s00330-023-09763-1
Tomografía de una extensión de cabeza a trasero de la contorsionista Irene Betti. Se puede apreciar la movilidad de las distintas secciones de la columna vertebral. 📸Michel Ritz #ctscan #computedtomography #tomografiacomputarizada #anatomia #anatomy #bones #huesos #esqueleto #skeleton
Have my Computed Tomography images and they say they are not for diagnostic purposes but Google Doctor has got me this far so I'm on it!
#ComputedTomography #KidneyStones #GoogleDoctor #SelfDiagnosis #IGotThis
I experienced Computed Tomography this morning. Now I'm reading all about Computed Tomography because Computed Tomography.
#ComputedTomography
Open Position: Assistant #Professorship tenure track in #Digital #Paleobiology
100% @ the #Paleontological institute of the University of #Zürich #UZH
#paleobiology #paleontology #computedtomography #digitalisation #fossils #job #openposition #Evolution
@jobsecoevo
@PaleoParaDive #introduction Weronika Łaska is in charge of uncovering information enclosed inside ancient #coprolites by means of #ComputedTomography, its analysis and #3D #visualization. She is interested in
#invertebrate #ichnology, #neoichnology and #evolution of #animalbehavior. Lately diving into #DeepLearning
& #paleontology. During the free time: #powerlifter
It's that time of year again -- the 2022 Hackaday Prize has officially launched, and we're excited to see what it turns out. This year's theme is "Sustainability, Resilience, and Circularity," and just in time, too; if the last couple of years has taught us anything, it's that we've got a lot of failure points built into the systems that run our world. As broken as things are, it's tempting to just curl up in a ball and pretend everything's fine, but that's not how hackers respond to adversity. We need to control what we can control, and there's plenty of work to be done. From sustainable energy ideas to ways to reduce the amount of stuff we throw away, from breathing new life into old equipment to building communities that can take care of themselves, there's plenty of work to be done. So get over to the Hackaday Prize page, check out the launch summit video if you need some inspiration, and get hacking. And hurry up -- things are only going to get better if people like us make it happen.
Every once in a while, we stumble upon a project that is so obviously a labor of love that we have to call it out. And it's clear that Tio Luigi's Component Codification Guide is exactly such a project. The amount of work that Luigi, aka Luiz Ferreria, put into this handbook of electronic components is mind-boggling, and if you thought a simple pictorial guide to capacitors, resistors, and inductors could never be a page-turner, think again. The artwork is gorgeous, the explanations of color-coding and other schemes for denoting values are clear and useful, and the discovery of new and unusual packages for common components is a treat. But it's the little nuggets of information that keep you reading -- did you know that the color bands denoting precision on high-voltage resistors are yellow and gray to reduce the risk of flashover through the more typical gold and silver paint? How fascinating is that!
Speaking of components, here's another treat for you: Tim Hunkin is releasing a second season of his "Secret Life of Components" series. The first season wrapped up almost a year ago, but Tim says it proved so popular and garnered enough donations that he was able to do it again. The first of five videos, "The Secret Life of Sensors," was released this past Thursday. Most of us remember Tim from "The Secret Life of Machines" series he did with the late Rex Garrod many years ago, which for all their ad hoc charm were great fun to watch. What we love about the "Components" series is that unlike the original, which was aimed at a much broader audience, these videos are aimed squarely at makers and builders, and are stuffed full of useful tidbits Tim has picked up over a lifetime of making cool stuff.
Over on the Prusa channel, there's a brief but interesting video showing how to 3D print emergency splints. Printed casts made to your exact body contours aren't exactly new, but if you've suffered an injury, it's hard to imagine that you'll be sitting down in front of Fusion 360 to design something that's a perfect fit. But the idea here is to just print a flat but flexible structure out of PLA, and post-form it to the injured extremity after gentle heating. The video recommends heating with a hairdryer or heat gun, or even by cooking it a little right on the bed of the printer or dipping it in hot water. It's important to protect the skin with some gauze padding, and to use conforming bandages, often called "vet tape," to hold the splint in place. The next step should, of course, be a trip to the doctor, but this trick might just get you out of a jam -- especially if you preprint and stash the splints.
And finally, a couple of weeks ago we featured a link to BrainLubeOnlines's collection of X-rays of common objects. If you liked that, then you love Scan of the Month, which adds an extra dimension with 3D computed tomography (CT) scans of everyday items. We appreciate the look inside gadgets like GameBoys and AirPods, but for our money, the real engineering prowess goes into the food packaging items, like ketchup and Sriracha bottle caps. Making them work while being able to manufacture them for as close to zero cost as possible is a real challenge, and worth a look inside.
#hackadaycolumns #hackadaylinks #slider #2022hackadayprize #colorcode #components #computedtomography #ctscan #design #firstaid #pla #secretlifeofcomponents #splint #sustainability #timhunkin
CT Scans of Instant Cameras Reveal Their Inner Workings
#educational #equipment #computedtomography #ctscan #fujifilm #fujifilminstaxmini11 #instantcamera #instantcameras #polaroid #polaroid600af #polaroidgo #scanofthemonth
What Happens if Film Goes Through Airport CT Scanners?
The United States Transportation Security Administration has rolled out the use of computed tomography (CT) scanners as the latest "threat detection" equipment scanner for airport security. As these are different from X-ray machines, what happens to film if it goes through one?
The use of CT scanners has become more widespread across the United States since the summer of 2020. Thes TSA says its scanners are similar to the ones used in the medical field and advances the current method of two-dimensional screening tech to what is now three-dimensional.
"The CT technology applies sophisticated algorithms for the detection of explosives and other threats by creating a 3-D image that can be viewed and rotated 360 degrees for a thorough analysis," the TSA writes. "CT technology provides enhanced detection of threat items. Like existing CT technology used for checked baggage, the machines create such a clear picture of a bag’s contents that computers can automatically detect explosives, including liquids. In the future, the goal is to keep laptops and 3-1-1 liquids inside of the bag during checkpoint screening. Under current screening procedures for this technology, laptops are allowed to remain inside the bag for screening."
In January of 2020, Kodak put out a warning that the CT scanners that the TSA were rolling out across the country would ruin film. Unfortunately, photographer Imran Nuri accidently forgot a roll of ISO 400, 120 film in his bag which went through a scanner in Rhode Island.
"On that roll, I had already taken pictures but hadn’t developed it yet," he tells PetaPixel. "[After developing it], I noticed that the shadows seemed a little grainier than I would have expected. Combine that with articles that claim 'just one scan from the CT Scanner could destroy your unprocessed film,' and I was too scared to ever make the same mistake again."
However, he later became curious about how much of an effect the CT scanners would have on film, and later returned to the airport specifically to further experiment.
"This time around, I wanted to control the experiment more. I sent one roll of Kodak Portra 400 that I had not yet taken pictures on through a TSA CT scanner at BWI airport," Nuri says. "The roll only went through security one time and was not sent through the TSA CT scanner again after I shot the photos. I then loaded that roll into a 35mm camera with a 50mm lens and loaded a separate 35mm camera with a 50mm lens with a fresh, unharmed roll. I shot the exact same pictures using the same settings on both cameras for each shot so that I could compare them side-by-side as accurately as possible."
Left side: Unscanned film. Right side: After CT scan. Left side: Unscanned film. Right side: After CT scan.
Nuri found that while only the darkest shadows may have lost a negligible amount of detail, the film was relatively unharmed.
"Compare that to photos I took in Rhode Island that got TSA CT scanned after I took photos but before developing them, you can see the difference is clear. Having your roll get scanned after you’ve taken photos but before developing will noticeably decrease the level of detail in the shadows."
Left side: Unscanned film. Right side: After CT scan. Left side: Unscanned film. Right side: After CT scan.
In his testing, Nuri says that one scan through the new CT scanners before you take any exposure will not noticeably damage film, assuming the photos are properly exposed later. However, sending a roll that already has photos on it through the TSA CT scanner will damage them with a noticeable loss of detail in the shadows.
"It’s still highly recommended to have TSA hand check all your film while going through security," Nuri concludes.
For more from Imran Nuri, make sure to subscribe to his YouTube Channel.
Image credits: Photos by Imran Nuri and used with permission.
#equipment #technology #travel #35mmfilm #3d #computedtomography #ctscanner #damaged #damagedfilm #film #imrannuri #tsa
Interesting. EMI helped to finance the development of computed tomography (CT).
"Thanks to The Beatles, [...] whose record sales had almost doubled EMI’s profits since they had signed to its Parlophone label five years earlier, EMI had begun to invest a sizeable amount of money into funding bold research ideas [including computed tomography (CT)]."
#Health #Technology #MedicalTechnology #ComputedTomography
https://www.nobelprize.org/prizes/medicine/1979/perspectives/
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