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They include gadolinium and manganese chelates, or iron salts for T 1 signal enhancement. SPIO, barium sulfate , air and clay have been used to lower T 2 signal. Natural products with high manganese concentration such as blueberry and green tea can also be used for T 1 increasing contrast enhancement.
Delayed Gadolinium-enhanced MR Imaging of Articular Cartilage: Three-dimensional T1 Mapping with Variable Flip Angles and B1 Correction; Toward Imaging Biomarkers for Glycosaminoglycans; Longitudinal Evaluation of Cartilage Composition of Matrix-Associated Autologous Chondrocyte Transplants with 3-T Delayed Gadolinium-Enhanced MRI of Cartilage
Meanwhile, late gadolinium contrast (LGE) can detect fibrosis or scar. Lesions at the subpericardium and midwall enhancement of basal septum or inferolateral wall is strongly suggestive of sarcoidosis. [38] MRI can also follow up on the treatment efficacy of corticosteroids and prognosis of cardiac sarcoidosis. [106]
Gadolinium acetylacetonate is a coordination compound with the formula Gd(C 5 H 7 O 2) 3. This anhydrous acetylacetonate complex is widely discussed but unlikely to exist per se. The 8-coordinated dihydrate Gd(C 5 H 7 O 2 ) 3 (H 2 O) 2 is a more plausible formula based on the behavior of other lathanide complexes.
Gadolinium is a silvery-white metal when oxidation is removed. It is a malleable and ductile rare-earth element. 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.
Gadopentetic acid, sold under the brand name Magnevist, is a gadolinium-based MRI contrast agent. [2]It is usually administered as a salt of a complex of gadolinium with DTPA (diethylenetriaminepentacetate) with the chemical formula A 2 [Gd(DTPA)(H 2 O)]; when cation A is the protonated form of the amino sugar meglumine the salt goes under the name "gadopentetate dimeglumine".
Gadolinium gallium garnet (GGG, Gd 3 Ga 5 O 12) is a synthetic crystalline material of the garnet group, with good mechanical, thermal, and optical properties. It is typically colorless. It has a cubic lattice, a density of 7.08 g/cm 3 and its Mohs hardness is variously noted as 6.5 and 7.5.
Gadolinium acetate is the acetate salt of the lanthanide element gadolinium with the chemical formula Gd(CH 3 COO) 3. It is a colorless crystal that is soluble in water and can form a hydrate. [ 1 ] Its tetrahydrate has ground state ferromagnetism .