Tiny lensless endoscope captures 3D images of objects smaller than a cell: Self-calibrating technology opens new opportunities for medicine and research

Researchers have developed a new self-calibrating endoscope that produces 3D images of objects smaller than a single cell. Without a lens or any optical, electrical or mechanical components, the tip of the endoscope measures just 200 microns across, about the width of a few human hairs twisted together. As a minimally invasive tool for imaging features inside living tissues, the […]

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VxWorks OS is vulnerable to remote takeover

It’s the operating system that runs the elevator, the HVAC system, medical equipment, and even the router that connects everything else in a hospital to the outside world. Wind River Systems’ VxWorks real time operating system powers these devices and more. But pervasive vulnerabilities in versions going back over a decade have recently been discovered. The vulnerability is within the […]

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When a fix for one vision problem causes another

As we age, our eyes lose their ability to focus up close. It’s a condition called presbyopia, and it’s both extremely common and relatively easy to fix, with solutions like reading glasses, bifocals, or progressive lenses. Another common correction, called monovision, solves the problem with different lenses in each eye, one that focuses nearby, the other that focuses far away. […]

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Ultrasound-assisted optical imaging to replace endoscopy in breakthrough discovery

Carnegie Mellon University’s Assistant Professor of Electrical and Computer Engineering (ECE) Maysam Chamanzar and ECE Ph.D. student Matteo Giuseppe Scopelliti today published research that introduces a novel technique which uses ultrasound to noninvasively take optical images through a turbid medium such as biological tissue to image body’s organs. This new method has the potential to eliminate the need for invasive […]

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Blood flow monitor could save lives: Fibre-optic probe gives continuous cardiac measure

A tiny fibre-optic sensor has the potential to save lives in open heart surgery, and even during surgery on pre-term babies. The new micro-medical device could surpass traditional methods used to monitor blood flow through the aorta during prolonged and often dangerous intensive care and surgical procedures — even in the tiniest of patients. The continuous cardiac flow monitoring probe, […]

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A miniature robot that could check colons for early signs of disease

Engineers have shown it is technically possible to guide a tiny robotic capsule inside the colon to take micro-ultrasound images. Known as a Sonopill, the device could one day replace the need for patients to undergo an endoscopic examination, where a semi-rigid scope is passed into the bowel — an invasive procedure that can be painful. Micro-ultrasound images also have […]

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Neural dust: Implantable medical devices the size of a grain of sand

Many of the diseases that afflict people today are fundamentally addressable through neuromodulation, a process by which nervous activity is regulated by way of controlling the physiological levels of several classes of neurotransmitters. Neuromodulators are a subset of neurotransmitter. Unfortunately, many challenges confront clinicians in the study of the nervous system and hinder the discovery of new treatments, said Jose […]

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New 3D microscope visualizes fast biological processes better than ever

“Many important biological processes occur in three dimensions and on millisecond timescales,” says Lars Hufnagel on the rationale for developing the new microscope. Capturing these fast processes is a big challenge in biology. And showing them not only in 2D but in 3D is — next to the needed high resolution — the second main aspect of modern microscopy. The […]

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Heart patch could limit muscle damage in heart attack aftermath

Researchers have designed a new type of adhesive patch that can be placed directly on the heart and may one day help to reduce the stretching of heart muscle that often occurs after a heart attack. The patch, made from a water-based hydrogel material, was developed using computer simulations of heart function in order to fine tune the material’s mechanical […]

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Detecting pollution with a compact laser source

Researchers at EPFL have come up with a new middle infrared light source that can detect greenhouse and other gases, as well as molecules in a person’s breath. The compact system, which resembles a tiny suitcase, contains just two parts: a standard laser together with a photonic chip measuring a few millimeters across. The research is detailed in an article […]

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