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Gadolinium reacts with atmospheric oxygen or moisture slowly to form a black coating. Gadolinium below its Curie point of 20 °C (68 °F) is ferromagnetic, with an attraction to a magnetic field higher than that of nickel. Above this temperature it is the most paramagnetic element. It is found in nature only in an oxidized form.
MRI contrast agents are contrast agents used to improve the visibility of internal body structures in magnetic resonance imaging (MRI). [1] The most commonly used compounds for contrast enhancement are gadolinium-based contrast agents (GBCAs).
Any rare-earth element can be used in a ReBCO; popular choices include yttrium (), lanthanum (), samarium (Sm123), [6] neodymium (Nd123 and Nd422), [7] gadolinium (Gd123) and europium (Eu123), [8] where the numbers among parenthesis indicate the molar ratio among rare-earth, barium and copper.
Gadolinium(III) oxide (archaically gadolinia) is an inorganic compound with the formula Gd 2 O 3. It is one of the most commonly available forms of the rare-earth element gadolinium , derivatives, of which are potential contrast agents for magnetic resonance imaging .
Pages in category "Gadolinium" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. ...
Gadoteric acid, sold under the brand name Dotarem among others, is a macrocycle-structured gadolinium-based MRI contrast agent (GBCA).It consists of the organic acid DOTA as a chelating agent, and gadolinium (Gd 3+), and is used in form of the meglumine salt (gadoterate meglumine).
Gadolinium salts are of primary interest for relaxation agents in magnetic resonance imaging . This technique exploits the fact that Gd 3+ has an electronic configuration of f 7 . Seven is the largest number of unpaired electron spins possible for an atom, so Gd 3+ is a key component in the design of highly paramagnetic complexes. [ 6 ]
A higher water level in the tube slowed more neutrons in the core, causing more neutron capture by the gadolinium tube cladding rather than by the uranium fuel, thus lowering the power level. The system was configured with the pump running continually to keep the water level low; on loss of electrical power, all of the water would flow back ...