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Medical Imaging


— Science

X-ray microscope delivers unparalleled nanoscale images in 3D

A new X-ray microscope at Brookhaven National Laboratory is being used to create unparalleled high-resolution 3D images of the inner structure of materials. Using techniques similar to taking a very small-scale medical CAT (computer-assisted tomography) scan, the full field transmission x-ray microscope (TXM) enables scientists to directly observe structures spanning 25 nanometers - three thousand times smaller than a red blood cell - by splicing together thousands of images into a single 3D X-ray image with "greater speed and precision than ever before." This capability is expected to power rapid advances in many fields, including energy research, environmental sciences, biology, and national defense. Read More
— Medical

Gold nanoparticles paint a precise picture of brain tumors before and during surgery

Scientists at Stanford University’s School of Medicine have created nanoparticles that are able to precisely highlight brain tumors. Because the nanoparticles can be imaged in three different ways, they can be used to delineate the boundaries of tumors before and during brain surgery to ease the complete removal of tumors. The scientists have already used the nanoparticles to remove brain tumors from mice with unprecedented accuracy and hope the technique could be used on humans in the future. Read More

Desktop-sized CT scanner created as a teaching aid

When you're learning how to use a complex device, there’s nothing like getting some hands on play time. When it comes to CT (Computed Tomography) scanners, however, it’s often difficult to find a time when they’re not being used on patients. That’s why two biophysics professors at Canada’s Western University invented the DeskCAT. It’s a miniature CT scanner that’s small enough to sit on a desk, so it can be used in medical school classrooms. Read More
— Health and Wellbeing

Quick 3D motion-capture system developed for imaging muscles

Current medical imaging technology misses important data regarding muscle contraction, including the ways in which a muscle’s shape changes when it contracts, how the muscle bulges, and how its internal fibers become more curved ... or at least, so Simon Fraser University (SFU)’s associate professor James Wakeling tells us. In order to remedy that situation, he has developed a new method of imaging contracting muscles, that he claims should allow researchers to observe never-before-seen details of muscle activation. Read More
— Science

Microfluidic silicon probe could improve disease diagnostics

IBM scientists in Zurich have created a proof-of-concept device, that could change the way that human tissue samples are analyzed. Presently, samples must be stained with a biomarker solution in order to detect the presence of a disease. The staining process can be quite involved, however, plus it is subject to error – too much of the solution can cause inaccurate results, for instance. Additionally, it can sometimes be difficult to perform enough tests using the small amount of tissue extracted in most biopsies. The IBM technology, though it still involves staining, is said to offer a potential solution to these shortcomings. Read More
— Science

Next-generation camera pill could transmit HD video from inside the body

Although we may not yet have reached the stage where manned submarines can be shrunken down and placed inside the body, à la the movie Fantastic Voyage, current technology does allow us to do something almost as impressive – it is now possible to obtain images of the inside of the intestinal tract, by getting patients to swallow a camera-equipped capsule. Japanese company RF System Lab reported success using its Norika 3 RF Endoscopic Robot Capsule to transmit live video from inside test subjects back in 2004, while just last year Olympus announced the creation of a similar device. Now, Norwegian researchers are stating that they are in the process of developing the “next generation” of camera pill. Read More
— Medical

New algorithm could significantly reduce MRI scan time

If you've ever had to endure a diagnostic session in a magnetic resonance (MRI) machine, you know that lying motionless for up to 45 minutes can be uncomfortable at best. Add in the countless ear-ringing thumps, bangs and knocks and you have a procedure that begs for any sort of abbreviation. Thanks to a new algorithm developed by an MIT research team, the time spent in that claustrophobic tube may soon be appreciably shortened, without much loss of accuracy. Read More
— Military

New method may lead to improved detection of nuclear materials

Scientists at Northwestern University, Illinois, have outlined a new method for detecting electromagnetic radiation at the high energy end of the spectrum. The work could lead to the development of a small, hand held device able to detect this "hard radiation" and has implications for the detection of radioactive materials which could potentially be employed in terrorist weapons, such as nuclear bombs or radiological dispersion devices, as well as materials employed in clandestine nuclear programs. Read More
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