Search results for "Positron emission" - New World Encyclopedia
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- Positron emission tomography (PET) is a nuclear medicine imaging technique that produces a three-dimensional image or map of functional processes ...26 KB (3,835 words) - 05:46, 30 November 2022
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- a type of radioactive decay involving the emission of beta particles. Beta ... ==β+ decay (positron emission) == Unstable atomic nuclei with an excess ...10 KB (1,458 words) - 17:45, 29 September 2023
- an atom and insufficient energy to emit a positron. In such a case, a proton ... than 1.022 mega electronvolt (MeV), positron emission is forbidden and electron ...5 KB (705 words) - 15:57, 13 February 2024
- electron capture (with some alpha and positron emission), and the primary mode ... preferred compound for detectors in positron emission tomography (PET.) ...11 KB (1,371 words) - 03:06, 5 November 2022
- Positron emission tomography (PET) is a nuclear medicine imaging technique that produces a three-dimensional image or map of functional processes ...26 KB (3,835 words) - 05:46, 30 November 2022
- Gamma rays of specific frequencies are produced during electron-positron ... a new, lower energy gamma photon with an emission direction different from ...16 KB (2,549 words) - 04:20, 18 April 2024
- imaging by the technique called PET (positron emission tomography), and uranium ... imaging by a technique known as positron emission tomography. ...13 KB (1,855 words) - 17:47, 28 March 2024
- of polonium atoms may be ejected during the emission of alpha particles. Some researchers have reported that methyl groups can be attached to ...11 KB (1,554 words) - 08:39, 24 November 2022
- is moving in the opposite direction to a positron in complex 'internal ... in medical imaging, such as positron emission tomography (PET). In ...23 KB (3,458 words) - 06:25, 31 July 2023
- decay can also produce positrons (positron emission), analogously to negative ... that is readily detected by the Positron Emission Tomography (PET) technology ...30 KB (4,559 words) - 22:46, 7 December 2022
- It is also used in detectors for positron emission tomography. == Applications == Bismuth and its compounds have many applications, a number ...14 KB (1,891 words) - 17:59, 31 October 2023
- 40Ar (11.2%) by electron capture and positron emission, and it also transforms ... through neutron capture by 39K or alpha emission by calcium. 37Ar is created ...11 KB (1,517 words) - 06:25, 12 August 2023
- magnetic resonance imaging (MRI), and positron emission tomography (PET.) ... in medical imaging equipment such as positron emission tomography (PET). Another ...13 KB (1,750 words) - 07:39, 15 April 2024
- been (and still are) used as probes--the positron was discovered in this way ... 3 km (2 miles) long. SLAC is an electron-positron collider. ...19 KB (2,915 words) - 18:45, 23 March 2023
- 40) (11.2 percent) by electron capture and positron emission, and it decays to stable 40Ca (calcium-40) (88.8 percent) by beta decay. The half-life ...18 KB (2,538 words) - 05:52, 30 November 2022
- *The radioisotope 90Sr is also used in cancer therapy. Its beta emission and long half-life are ideal for superficial radiotherapy. ...14 KB (1,860 words) - 21:04, 26 February 2023
- rocks; Rb-87 decays to stable strontium-87 by emission of a negative beta particle. During fractional crystallization, Sr tends to become concentrated ...14 KB (1,892 words) - 20:57, 21 December 2022
- Vanadium (chemical symbol V, atomic number 23) is a rare, silver-gray metal. It is found combined in several minerals and is one of the 26 elements ...15 KB (2,022 words) - 14:18, 3 May 2023
- Albert Einstein, "Strahlungs-emission und -absorption nach der ... and energy quantization observed in the emission and absorption of light ...34 KB (4,943 words) - 20:26, 27 September 2023
- Zirconium (chemical symbol Zr, atomic number 40) is a strong, lustrous, gray-white metal that resembles titanium. It is obtained chiefly from ...16 KB (2,114 words) - 06:08, 13 June 2023
- Rhodium (chemical symbol Rh, atomic number 45) is a rare, silvery-white, inert metal. It is a member of the platinum group of elements and is ...13 KB (1,685 words) - 20:04, 8 December 2022
