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medical News
Remote System Uses Video, Algorithms to Monitor Baby’s Heart Rate and Breathing
LOGAN, Utah, Feb. 1, 2018 — A technology that estimates heart rate using a video camera and software could lead to new applications in the medical equipment and consumer markets. But first, the technology will be used to help new parents rest easier by monitoring the heart and breathing rates of their sleeping babies. The technology processes color data recorded by the camera — the green channel provides the data needed for heart rate estimation — and computes an average heart rate over the regions of
Phototherapy Treats Metastatic Disease Using Light-Sensitive Drugs
ST. LOUIS, Jan. 30, 2018 — A new study could expand the use of phototherapy for treating metastatic disease. Researchers have demonstrated the treatment of disseminated cancer by delivering photoactivatable drugs within tissues and inside cells in vivo. Light emitted as part...
Bright Light Therapy Improves Sleep in Cancer Patients
NEW YORK, Jan. 26, 2018 — Researchers investigated the effect of systematic light exposure on sleep in a mixed group of fatigued cancer survivors following primary cancer treatment. Results of the randomized controlled trial suggest that systematic bright light exposure...
Lithography, DNA Used to Build Structures That Could Lead to New Metamaterials
EVANSTON, Ill., Jan. 19, 2018 — Researchers have developed a technique for creating optical structures that could lead to new classes of optical materials and devices. Their technique combines a traditional fabrication method, top-down lithography with a new method, programmable...
Biomicroscopic System Could Yield More Effective Cancer Treatment
DAEGU, South Korea, Jan. 9, 2017 — A converged biomicroscope based on high frequency ultrasound and optical spectroscopy could overcome the challenges of existing imaging systems for tumor analysis and provide physicians with the means to avoid unwanted outcomes such as cancer...
Electron-Tunneling Nanomaterial Could Boost Optoelectronics and Sensing
LONDON, Dec. 22, 2017 — A material that uses quantum effects and allows precise control of hot electrons shows potential for use in chemical research, optoelectronics and sensing. Scientists at King’s College London developed the device which controls high energy...
Next-Gen Image Sensor Delivers High-Quality, Low-Light Imaging
HANOVER, N.H., Dec. 19, 2017 — ; A new imaging technology has been developed that can capture and count single photons with resolution as high as one megapixel and as fast as thousands of frames per second. Called the Quanta Image Sensor, or QIS, this technology enables highly...
Team Studies Optical Properties of Plasmonic Nanovesicles
AUSTIN, Texas., Dec. 12, 2017 — An on-demand, light-triggered drug release method — vesicular assembly of small plasmonic nanoparticles, or plasmonic vesicle — could aid in treatment of disease, support efforts to study the nervous system in real-time, provide insight...
Microscope Uses UV Light to Provide High-Res Images in Minutes, Without Damaging Tissue
SACRAMENTO, Calif., Dec. 6, 2017 — A fluorescence-based, slide-free optical imaging system, known as microscopy with UV surface excitation (MUSE), uses UV light at wavelengths below the 300 nanometer (nm) range to penetrate the surface of tissue samples by only a few microns —...
Hybrid Perovskite Material Could Be Key to Making Organic Diode Lasers
STATE COLLEGE, Pa., Dec. 5, 2017 — Researchers are closer to creating a tunable semiconductor diode laser from hybrid organic-inorganic perovskites. Using a material composed of an inorganic perovskite sublattice with relatively big organic molecules confined in the middle, a Penn...
All-Optical Ultrasound Transducer Could Transform Keyhole Surgeries
LONDON, Dec. 5, 2017 — An optical ultrasound needle has been developed that allows heart tissue to be imaged in real-time during keyhole procedures. The technology was successfully used for minimally invasive heart surgery on pigs, giving a high-resolution view of soft...
Holographic Technique Uses Deep Learning to Increase Accuracy, Improve Microscopy
LOS ANGELES, Nov. 30, 2017 — Researchers are using deep learning, one of the key technologies behind advances in real-time speech recognition and automated image and video labeling, to reconstruct a hologram to form a microscopic image of an object. This convolutional neural...
Pulsed Laser Irradiation Enhances Nanoplate Properties
KUMAMOTO, Japan, Nov. 29, 2017 — When gold-coated silver nanoplates are irradiated with a pulsed laser, they release silver ions which are known to produce a strong antibacterial effect. Researchers observed that silver nanoparticles (AgNPs) — known to have antibacterial...
Team Taps Chalcogenide For Flexible Devices
CAMBRIDGE, Mass., Nov. 20, 2017 — A method for making photonic devices that can bend and stretch without damage could find uses in cables to connect computer devices, or in diagnostic and monitoring systems that could be attached to the skin. A new material produced by Juejun Hu and...
Ultrafast Pulses Coherently Control Function in a Living Cell
CHAMPAIGN, Ill., Nov. 17, 2017 — Researchers have used light to excite a light-sensitive channel in the membrane of optogenetic mouse neurons. When the channels were excited, they allowed ions through, which caused the neurons to fire. The researchers say the same technique could...
Handheld Spectrometer Wirelessly Transmits Data to Smartphone
HAIKOU, BEIJING and HANGZHOU, China, Nov. 17, 2017 — A wireless handheld spectrometer that is smartphone-compatible could make it easier and more economical to acquire spectral images of everyday objects and in the future could be used for point-of-care medical diagnosis in remote locations. The...
NIH Team Improves 3D Imaging Efficiency, Speed and Resolution
WASHINGTON, D.C., Nov. 15, 2017 — Researchers have developed a technique that improves the spatiotemporal resolution and collection efficiency of light-sheet fluorescence microscopy (LSFM), without modifying the underlying microscope. The technique instead uses reflection to improve...
Light-Activated Probe Could Aid Alzheimer’s Drug Development
HOUSTON and CORAL GABLES, Fla., Nov. 6, 2017 — Researchers have developed a probe that lights up when it binds to a misfolded amyloid beta peptide (Aβ), enabling footprinting of this protein, which is a suspected cause of Alzheimer’s disease. The probe was able to identify a specific...
Label-Free Imaging Maps Brain Changes in Alzheimer's Mouse Model
WUHAN, China, Oct. 20, 2017 — An imaging system called cryo-micro-optical sectioning tomography (cryo-MOST) could help speed new drug development for Alzheimer’s disease by offering a better way to monitor the brain changes indicative of Alzheimer's in mouse models....
Broad Palette of Fluorescent Dyes May Advance Biological Imaging
ASHBURN, Va., Oct. 19, 2017 — To better illuminate the inner workings of cells, researchers have developed a way to adjust the properties of fluorescent dyes deliberately, resulting in an expanded palette of dyes that are bolder, brighter and more cell-permeable. Their novel...
Camera Design Mimics Sophisticated Visual System
CHAMPAIGN, Ill., Oct. 16, 2017 — The bio-inspired design of an ultra-sensitive camera that is capable of sensing both color and polarization is based on the visual system of the mantis shrimp. The camera features a single-chip, low-power, high-resolution color-polarization imaging...
Scientists Fine-Tune Process for Making Thin Films from DNA
SEOUL, South Korea, Oct. 13, 2017 — In order to further investigate the optical properties of a DNA-based lipid complex that is widely used in current DNA thin film research, researchers developed a refinement process to minimize the relative bound water content and control binding of...
Catheter Combines Ultrasound and Multispectral Fluorescence to Measure Arterial Plaque
DAVIS, Calif., Oct. 6, 2017 — A novel cardiac catheter probe combines intravascular ultrasound (IVUS) and fluorescence lifetime imaging (FLIm) in a single device that can image the arteries of a living heart. The catheter can simultaneously retrieve structural and biochemical...
Europe Emerges as Major Player in Imaging
Sep 29, 2017 — Imaging technology and systems are moving into a top spot in the photonics market. This trend is the result of rising demand for advanced health and wellness treatments and noninvasive medical procedures, as well as megatrends in industrial...
Ballistic Photon Imaging Locates Fiber Optic Instruments In Vivo
EDINBURGH, Sept. 27, 2017 — A camera that detects light sources inside the human body could be used at a patient’s bedside to track and guide the location of an endoscope, or other fiber-optic instrument, in the body without the need for x-rays or other equipment. Light...
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