Sentences with phrase «photon emission»

The patients» brain functions and quality of life were then assessed by computerized evaluations and compared with single photon emission computed tomography (SPECT) scans.

The scan is called single photon emission computed tomography (SPECT).

Los Alamos National Laboratory researchers have produced the first known material capable of single - photon emission at room temperature and at telecommunications wavelengths, using chemically functionalized carbon nanotubes.

In their paper, published in Scientic Reports, the authors present the first demonstration that single - photon emission from a specially oriented compound defect (a nitrogen vacancy center) in diamond is dynamically and statically unpolarized with intrinsic randomness.

This research brings on - chip single photon emission for quantum communication a step closer.

Recent advances allow neuroscientists to study levels of neurotransmitters or their receptors in specific brain regions via PET (positron emission tomography), SPECT (single photon emission computerized tomography), and MRS (magnetic resonance spectroscopy).

Arefiev co-authored the study, «Enhanced multi-MeV photon emission by a laser - driven electron beam in a self - generated magnetic field,» published May 2016 in the journal Physical Review Letters.

This quantum behaviour can significantly enhance light emission in general, and entangled photon emission in particular,» Hayat said.

Dr Marek Potemski and co-workers working at CNRS (France) in collaboration with researchers at the University of Warsaw (Poland) discovered stable quantum emitters at the edges of WSe2 monolayers, displaying highly localised photoluminescence with single - photon emission characteristics.

It produces an intense beam of slow - moving neutrons whose photon emissions can be detected with the same setup used for earlier precision measurements of the neutron's lifetime.

Because photons released into the atmosphere take energy with them, Miller said it was previously understood that greater photon emission meant less energy efficiency.

OBJECTIVE To review new incidental findings detected on low - resolution CT attenuation correction (CTAC) images acquired during single - photon emission CT - CT myocardial perfusion imaging as an

The integrity of the nigrostriatal dopamine pathway can be assessed using single photon emission computed tomography (SPECT) with dopamine transporter (DaT) radioligands.

Los Alamos National Laboratory has produced the first known material capable of single - photon emission at room temperature and at telecommunications wavelengths.

The data on the prevalence of myocardial ischemia on myocardial perfusion single photon emission computed tomography (MPS) in symptomatic patients with zero CACS and low to intermediate risk probability is lacking and controversial.

Now, with the help of imaging technology such as single - photon emission computed tomography (SPECT), researchers can see how these experiences play out in the brain.

Nuclear medicine includes equipment and techniques such as positron emission tomography (PET), gamma cameras and single - photon emission computed tomography (SPECT).

Currently, doctors use a variety of imaging techniques and tests to diagnose and monitor prostate cancer including PSA blood tests, magnetic resonance imaging (MRI), single photon emission computed tomography (SPECT), positron emission tomography (PET), and computerized tomography (CT) scans.

The simplicity and low cost of a smell test — $ 26.95 retail, before additional doctor or hospital charges — make it especially appealing in neurology, a field dominated by positron - emission tomography scans, dopamine transporter single - photon emission computed tomography imaging and other expensive technologies.

Over the past 10 years a number of different scientists, including neurologist James Austin from the University of Colorado, neuroscientist Andrew Newberg, and the late anthropologist and psychiatrist Eugene D'Aquili from the University of Pennsylvania, have done SPECT (single photon emission computed tomography) scans of the brains of Buddhists during meditation and of Franciscan nuns during prayer.

The photon emission was unpolarized, for instance, and appeared in the right wavelengths.

In the largest functional brain imaging study to date, the Amen Clinics (Newport Beach, CA) compared 46,034 brain SPECT (single photon emission computed tomography) imaging studies provided by nine clinics, quantifying differences between the brains of men and women.

All - electrical single photon emission is a key priority for integrated quantum optoelectronics.

Prof Atatüre says «We chose WS2 because it has higher bandgap, and we wanted to see if different materials offered different parts of the spectra for single photon emission.

Researchers from the Graphene Flagship use layered materials to create an all - electrical quantum light emitting diodes (LED) with single - photon emission.

Experimental results show that almost 40 % of the photons are easily collected with a very simple optical apparatus, and over 20 % of the photons are emitted into a very low numerical aperture, a 20-fold improvement over a freestanding quantum dot, and with a probability of more than 70 % for a single photon emission.

Energy dissipation is a key ingredient in understanding many physical phenomena in thermodynamics, photonics, chemical reactions, nuclear fission, photon emissions, or even electronic circuits, among others.

In a long, laborious process, the research group further developed and tested the photonic chip until it achieved extreme efficiency and Peter Lodahl explains that it was particularly surprising that they could get the photon emission to occur in a way that was not previously thought possible.

The researchers used a nuclear medical imaging method — known as single photon emission tomography, SPECT for short — enabling them to produce digital cross-sections from deep layers of tissue.

When near - infrared light is projected at these modified carriers they break down via two - photon emission.

This study used cerebral perfusion imaging with single photon emission computed emission tomography (SPECT) to examine the brains of the largest group of retired and current NFL players investigated to date, a total of 161 individuals with an average age of 52.

The subsequent emission of a photon occurs at random angles and as a result, averaged over several absorption - emission cycles, there is no momentum transferred due to the photon emission.

Dynamically and statically unpolarized single - photon emission is induced by laser excitation for a [111]- oriented NV center in (111) diamond.

Results of this research showed that the use of positron emission tomography (PET) and single photon emission computed tomography (SPECT), which image physiological functions of the body such as peptide receptor activity, led to dramatically altered dosimetry in all participating patients.

The team found that by choosing a nanotube of appropriate diameter, the single photon emission could be tuned to the essential telecom wavelength region.

MRI, positron emission testing (PET scan), functional MRI, computerized tomography (CT scan) and / or single photon emission computed tomography (SPECT) to look for scar tissue or other brain abnormalities that may be causing seizures

LOS ALAMOS, N.M., July 31, 2017 — Los Alamos National Laboratory has produced the first known material capable of single - photon emission at room temperature and at telecommunications wavelengths.

Getting a SPECT (single - photon emission computed tomography) scan allows our doctors to analyze the blood flow and activity inside your brain.