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medical News
Photosensitizer Enhances The Anticancer Properties of an Antimalarial Drug
SINGAPORE, Sept. 26, 2017 — Scientists have shown that the anti-cancer properties of artemisinin, an anti-malarial drug that is also a promising alternative cancer treatment, could be enhanced potentially ten-fold when used with the photosensitizer aminolaevulinic acid (ALA). When exposed to light, ALA leads to the generation of free radicals that can kill cells. A team from the National University of Singapore (NUS) discovered that a combination of artemisinin and ALA could kill colorectal cancer cells and
Device Allows Standard Cameras to Produce Hyperspectral Images
BEER-SHEVA, Israel, Sept. 14, 2017 — A miniaturized hyperspectral device has been developed as an add-on for a standard camera, and could be used to repurpose a camera for generating hyperspectral images and videos for a range of applications. Developers of the device used compressive...
Photoacoustic Imaging Technique Measures Periodontal Health
LA JOLLA, Calif., Sept. 12, 2017 — Using squid ink as a contrast agent for a photoacoustic ultrasound, researchers have developed a dental imaging method for assessing gum health that is non-invasive, comprehensive and accurate. The photoacoustic method can image the entire pocket...
Novel STEM for 3D Imaging Improves 3D Visualization of Curvilinear Nanostructures
LAUSANNE, Switzerland, Sept. 8, 2017 — Scientists have developed a scanning transmission electron microscopy (STEM) method that generates fast and reliable 3D images of curvilinear structures from a single sample orientation. This STEM method can acquire images in a single shot, making...
Smartphone App Objectively Assesses Brain Injuries in The Field
SEATTLE, Sept. 8, 2017 — A smartphone app that detects concussion and other traumatic brain injuries could be used to determine whether someone — whether a football player, a soldier in battle, or an elderly person who has fallen — should be further assessed for...
Optogenetics Used to Control Interorganellar Communication
COLLEGE STATION, Texas, Sept. 6, 2017 — Researchers are using optogenetics to tune communication between organelles within living cells. The optogenetics tools are being used to control the proteins that form the bridge between organelles, and to govern the length of the bridge at the...
Subwavelength THz Could Improve Image Resolution, Accelerate Imaging Speed
EXETER, England, Sept. 5, 2017 — A terahertz (THz) imaging technique that is compatible with adaptive and compressive sensing algorithms has been developed and has demonstrated image reconstruction at highly subwavelength dimensions. Using a near-field approach to THz imaging,...
Flexible, Fabric-Based OLEDs Unveiled
DAEJEON, South Korea, Aug. 28, 2017 — Researchers have developed fabric-based OLEDs that show high luminance and efficiency while maintaining the flexibility of the fabric. These fabrics could lead to soft wearable displays that bend and move with the wearer. Silicone-based LED jackets,...
Quantum Dots Provide Basis for Tumor Imaging System
LA JOLLA, Calif., August 25, 2017 — A novel proof-of-concept nanosystem for the visualization of tumors generates bright tumor signals by delivering near-infrared quantum dots (QDs) to cancer cells without any toxic effects. The QDs are delivered intravenously into extravascular tumor...
LEO Science & Tech Hub Announce Imaging Technology Partnership
CAMBRIDGE, Mass., Aug. 24, 2017 — LEO Science & Tech Hub, an R&D unit of LEO Pharma, has announced two collaborative projects with The Wellman Center for Photomedicine at Massachusetts General Hospital. The Hub will provide research funding to support development of novel...
Diagnostic Tool Uses NIR to Detect Risk of Heart Attack, Stroke
COVENTRY, England, and MELBOURNE, Australia, Aug. 21, 2017 — Scientists increased the wavelength in a tool used to detect fatty deposit build-up in arteries to NIR wavelengths, and found that they could use the tool to selectively identify plaques with internal bleeding typically associated with high-risk...
Laser Ablation System Enables Transdermal Drug Delivery
KUMAMOTO, Japan, Aug. 17, 2017 — A novel transdermal protein delivery system for protein-based drugs uses photothermal ablation to increase the permeability of the skin by heating and perturbing the first skin layer, so that the drug can be delivered through via a skin patch....
3D Printer Yields Ultracompact Microfluidic Device
PROVO, Utah, Aug. 15, 2017 — A custom 3D printer built using digital light processor stereolithography (DLP-SLA) has demonstrated the ability to print a viable microfluidic device small enough achieve flow channel cross sections as small as 18 micrometers (μm) × 20...
New Algorithms Improve Lensless Microscopes
ST. PETERSBURG, Russia, and TAMPERE, Finland, Aug. 15, 2017 — Using special algorithms scientists have significantly improved computational imaging of the optical signal in lensless microscopes. The algorithms not only generate the image, but also improve the optical signal, making it possible to obtain images...
Microscopy Technique Images Thick, Multicellular Samples in 3D
CHAMPAIGN, Ill., Aug. 8, 2017 — Gradient light interference microscopy (GLIM), an add-on module to a commercial differential interference contrast (DIC) microscope, provides a novel technique for extracting 3D information from thin and thick unlabeled specimens. Unlike other...
Fluorescent Sensor Detects Drug-Induced Protein Stress in Cells
STATE COLLEGE, Pa., Aug. 8, 2017 — A fluorescent sensor that becomes activated in a cell when misfolded proteins begin to aggregate could be an effective way to detect protein aggregates caused by drug-induced proteome stress prior to cell death. Researchers designed an unstable...
Hybrid Materials Could Have Range of Optical Applications
LEIOA, Spain, Aug. 7, 2017 — Hybrid photoactive materials, created by incorporating fluorescent dyes that are used in solution into channeled inorganic structures, could be used for a range of applications including biomedicine. The materials were found to give the dye...
Flat Microscope to be Used in Implantable Neural Interface
HOUSTON, Aug. 3, 2017 — A prototype of a flat microscope, called FlatScope, has been developed as part of the Defense Advanced Research Projects Agency’s (DARPA’s) Neural Engineering System Design (NESD) project. The microscope will be designed to sit on the...
Near-Infrared Tumor Technology Identifies Cancerous Cells
PHILADELPHIA, Aug. 3, 2017 — Surgeons were able to identify and remove a greater number of cancerous nodules from lung cancer patients when combining intraoperative molecular imaging (IMI) — using of a contrast agent that makes tumor cells glow during surgery — with...
Imaging Tracer Allows Early Evaluation of Abdominal Aortic Aneurysm
NEW HAVEN, Conn., Aug. 2, 2017 — A novel medical imaging technique using a newly developed tracer could potentially be used to assess a patient’s rupture risk for abdominal aortic aneurysm (AAA), allowing better management of this disease. Researchers developed a...
Plasmonics Key to Photon Upconversion
HOUSTON, July 27, 2017 — A method to efficiently upconvert light combines plasmonic metals and semiconducting quantum wells to boost wavelength frequency. The novel photon upconversion technique is mediated by hot carriers in plasmonic nanostructures. Hot holes and hot...
Specialty Fibers Revolutionize Sensing
Jul 21, 2017 — Optical fiber has changed the world by providing millions of kilometers of telecommunication fiber that have transformed how we communicate. But beyond telecommunications, optical fibers are making enormous impacts on both sensing applications and...
Raman-Based Approach Images Biological Processes in Action
MARSEILLE, France, July 14, 2017 — A fast, novel imaging technique could improve molecular-scale understanding of the biological processes involved in the early stages of disease. The technique uses polarization-resolved coherent Raman scattering (polar-CRS) to reveal a...
With Virtual Reality, Life’s a Beach — Even at the Dentist
PLYMOUTH, England, July 13, 2017 — Virtual reality was used to transport patients from the dentist’s chair to a day at the beach at one dental practice in Devon, England — with a demonstrable improvement in the comfort level on the part of the patients. The dental...
Handheld Optoacoustics Device Sees Under Skin
MUNICH, July 10, 2017 — A handheld scanner for analyzing the skin of psoriasis patients was shown to provide clinically relevant information, such as the structure of skin layers and blood vessels, without the need for contrast agents or radiation exposure. The device...
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