Gamma-ray bursts

Definition; nuclear medicine is medical imaging that uses radioactive material to diagnose and determine a variety of diseases including many cancers, heart disease, gastrointestinal, endocrine, neurological, disorders, and other problems within the body. Nuclear medicine is able to pinpoint molecular activity in the body. It helps to identify early stages of disease. Nuclear medicine are noninvasive and painless medical test. These scans use radioactive material called radiopharmaceuticals

produces gamma rays when it undergoes beta plus decay, also know as positron emission, occurring after the radioactive isotope undergoes change inside the nucleus. This change starts when an atom's proton is converted into a neutron inside the nucleus resulting in the loss of a positive charge, and a small amount of mass being lost. This mass is referred to as a positron. Then the positron after release collides with an electron and annihilation of the particles occur, producing two gamma rays. These

Nuclear Medicine: Healthcare’s Jack of All Trades Introduction Nuclear medicine is a specialty which utilizes radiopharmaceuticals, injected into patients, during the imaging process. Radioisotopes are attached to pharmaceuticals which target certain cells and then introduced in vivo to the patient. Artificial radioactivity was discovered in 1939, and radionuclides were first used in medicine in 1946, but it was not until 1971 that the American Medical Association (AMA) formerly acknowledged nuclear

There are two major ways in which X-rays interact with tissue. The first is the photoelectric effect, where a photon uses all of its energy to eject an electron from an atom; that while the electron moves around and ionizes neighboring atoms, there are no scatter photons. The second major effect is the Compton scatter, where a photon hits an atom and ionizes an electron but does not use all of its energy. The photon then scatters in a different direction with slightly less energy, and the free electron

My Outline Research Paper Alpha radiation, Beta radiation and Gamma radiation. Alpha radiation occurs when an atom undergoes radioactive decay, giving off a particle called an alpha particle consisting of two protons and two neutrons (essentially the nucleus of a helium-4 atom), changing the originating atom to one of an element with an atomic number 2 less and atomic weight 4 less than it started with. Due to their charge and mass, alpha particles interact strongly with matter, and only travel

Causative Agent: A total body exposure of one hundred roentgens of radiation will cause radiation sickness. Although certain medical devices will give you exposure to radiation, the grays of radiation are miniscule and will not cause radiation sickness. There are a few sources that can lead to a high enough exposure of roentgens of radiation. One of these sources involves accidents or attacks involving nuclear facilities. The other has to do with accidents or being the target of radioactive or

nineteenth century, solutions have been introduced by scientists, that use radiation for the diagnosis of diseases instead of surgery (Pope, 1999), which has led to great advances in medicine because diagnostic technology such as CT and X-rays scanning, nuclear medicine (PET) and mammography,

They also have a less powerful ionizing rate compared to alpha particles. Gamma rays are energy, also known as electromagnetic radiation. They have no charge or mass. They move through the air extremely quickly (at the speed of light) and to ionize them, they need to directly hit the nucleus of an atom. This suggests that gamma rays have a very low ionizing rate and can travel much t=further through the air compared to alpha and beta particles. Nuclear-fuelled

Abstract The concentrations of 226Ra, 232Th and 40K are measured in the material collected from two locations. The collected materials are tested using gamma ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th and 40K in building material it varies from 12.6 to 121.4, 13.6 to 142 and from 69.5 to 620.6 Bqkg_1, respectively. The radium equivalent activity, the absorbed dose rate, annual effective dose and hazard index is also calculated Keywords Radionuclides

Research Assignment Contemporary Physics Michael A. Torch Dr. David R. Simpson Health Physicist Radiation has been present since the birth of the universe. Upon its discovery in the early 19th century, humans have used radiation for its beneficial purposes that date back decades. However, when used precariously or in large quantities, radiation can be dangerous. It can cause detrimental effects to living organisms. Medical facilities, nuclear power plants, research laboratories and academic industries