Sentence examples for not a positron from inspiring English sources

It is worthy to mention that the nanoparticle itself is not a positron emitter, and PET imaging only detects signals from the radio-isotopes (which usually are linked to the nanoparticle with a selected chelator as the bridge).

This isotope has a longer half-life (461 days) thanCd (6.5 h), and it was absorbed by the plants during the PETIS experiments but not detected by the PETIS apparatus because it is not a positron emitter.

24 We do not include a positron emission tomography (PET)/CT scan as a preoperative workup because medical insurance does not cover the expense of PET/CT.

aThe elemental composition was recalculated from ICRU, where hydrogen (1H) - which will not become a positron emitter - has been omitted in the calculation.

For heavier elements, if the innermost orbital (1s) is not filled, the electric field of the nucleus will pull an electron out of the vacuum, resulting in the spontaneous emission of a positron; however, this does not happen if the innermost orbital is filled, so that element 173 is not necessarily the end of the periodic table.

c, d A positron emission tomography/computed tomography scan did not show significant uptake of 18F-fluorodeoxyglucose into the tumor (arrow).

And this is what the gadolinium is for.Antineutrinos sometimes do something that neutrinos do not: they merge with a proton to create a neutron and a positron (the antimatter version of an electron).

But handling the "antihydrogen" - bound atoms made up of an antiproton and a positron - is trickier still because it must not come into contact with anything else.

PET imaging not only requires injecting a positron-emitting radionuclide into the body as a tracer but also has a resolution of 2 3 mm, which is low compared with that of MRI or THz, along with a sub-millimeter lateral resolution for clearly determining the tumor margins [ 5, 18].

If an electron and a positron do this, they will normally produce a pair of photons.

The antiparticle that is produced again depends upon the antineutrino interacting: an electron-antineutrino produces an anti-electron (positron); a muon-antineutrino produces a anti-muon (which is simply a heavier version of a positron).