Sentences with phrase «radioactive tracer»

Measuring the activity of transporter proteins in a living organism has been a challenge for scientists, because the methods are difficult, often require the use of radioactive tracers, and are hard to use in intact tissues and organs.

In the 1980s, positron emission tomography (PET) scans, which detect neural metabolism with radioactive tracers, snapped the first pictures of the brain in midthought.

Similar radioactive tracers also have come online.

Then, the team could work to develop radioactive tracer incorporating that compound.

To record the activity in the subjects» brains, the scientists used PET scans: They injected radioactive tracers into the volunteers and then tracked how the tracers moved in the brain.

Some supporters of alternative life suggest looking for signs of metabolic activity in varnishes, which could be detected by watching for the flow of radioactive tracers through any hidden organisms.

To conduct the study, researchers used Ra - 228, a natural radioactive tracer that is ideally suited for quantifying the submarine groundwater discharge into the sea at basin level.

Participants in all three groups received a harmless radioactive tracer that illuminates CB1 receptors when exposed to positron emissions tomography (PET scans).

So far, the imaging requires radioactive tracers.

Incongruously rendered in hyper - visible candy colors, the ash swirls glow like radioactive tracers in a nuclear medicine scan.

OT, Fukushima radioactive tracers might be used to measure the true lenghts of oceanic cycles, I guess there are enough longlived isotopes released to find them on random measurements around the globe.

By using dual radioactive tracers with differing lifetimes, Wilson et al. [2017] found short term increases in CH4 and CO2 release during periods of thaw in a discontinuous permafrost were generally offset by long - term accumulation of peat in the ensuing millennia, leading the regions to continue to be net carbon sinks with negative atmospheric radiative forcing, given the long life - time of atmospheric CO2.

«When we got the first inkling that our new mechanism might be useful for developing radioactive tracers, we started looking at Berkeley Lab and its Biomedical Isotope Facility, which was really central to this work,» Levin said.

However, the authors suggest that increasing the size of the detectors or the amount of radioactive tracer could help to overcome these issues, and propose that their technique could be useful for the study of both biological and non-biological systems.

They envisage a new era in mind research dominated by machines which use radioactive tracers, magnetic resonance effects or faint electrical signals to map the activity of living brains.

A radioactive tracer also revealed that binding occurred at receptors for naturally occurring pain - fighting endorphins.

PET scanners pick up gamma rays emitted by positronium formed when a radioactive tracer that emits positrons is injected into the body.

Using radioactive tracers, they found that a phosphorous molecule has to attach in a certain spot.

They developed a radioactive tracer that, when injected into the body, binds with a key protein that is present in all synapses across the brain.

Both techniques are non-invasive, requiring no injections of radioactive tracers.

In the sentinel node biopsy procedure, a radioactive tracer and a blue - colored dye are injected at or near the melanoma site on the skin and tracked to the first lymph node (s).

The researchers injected patients with sodium fluoride that had been tagged with a tiny amount of a radioactive tracer.

A patient is injected with a radioactive tracer, and the cells that absorb it most readily glow bright.

This type of imaging uses a radioactive tracer to look for chemical signs of disease in specific tissues.

By using PET and radioactive tracers, the researchers can show the flow of liquid or gas in the rock.

«This research allows us to make new classes of radioactive tracers that had been too difficult, or even impossible, to prepare previously,» said Mark D. Levin, who served as the lead author in the study, published in Science.

They tagged the DNA in the virus with a radioactive tracer and then they let it infect a colony of E. coli and then they spun the bacteria and the virus on the outside apart, ripped them apart and they said, «Okay what is now inside of the bacteria» It turned out it was DNA inside of it.

To find them, surgeons inject patients with a radioactive tracer that indicates the general region and a blue dye that stains the sentinel nodes.

I've always thought our exposure to chemicals was nowhere comparable to that of a radiologist, for example, who deals with x-rays and radioactive tracers 10 hours a day.

To see how the two gene versions affect the living human brain, the NIMH researchers scanned 24 healthy young adults twice using PET (positron emission tomography), which uses radioactive tracers to visualize brain function.

A variant called the nuclear stress test involves introducing a radioactive tracer into the body to visualize alterations in blood flow within the heart.

In a conventional PET scan, we tag glucose molecule with a radioactive tracer (Fluorodeoxyglucose, FDG), and inject it into the patient.»

I was full of happiness, although the radioactive tracer meant I couldn't hug my children.

It involves taking a radioactive tracer, an iodine «pill», around 4 to 6 hours before the first scan.

The amount of radioactive tracer will be the determining factor: If you have a high uptake of iodine tracer, it means that you have Graves» disease.

Nuclear Imaging for Animals is a state - of - the - art medical imaging facility where we use radioactive tracers to perform nuclear scanning (scintigraphy) for diagnosing of thyroid, bone, liver, and kidney diseases in dogs and cats.