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 (Gd) [gad″o-lin´e-um]
a chemical element, atomic number 64, atomic weight 157.25. (See Appendix 6.)

gad·o·lin·i·um (Gd),

An element of the lanthanide group, atomic no. 64, atomic wt. 157.25. The paramagnetic properties of this element are used in contrast media for magnetic resonance imaging.
[mineral, gadolinite, from Johan Gadolin, Finnish chemist, 1760-1852]


A low-toxicity paramagnetic contrast-enhancement agent used in MR imaging, which, when injected during the scan, tends to change signal intensities by shortening T1 in its surroundings.


A rare element–AW, 157.25 used as a contrast medium for MRI of the CNS, to enhance visualization of neoplasms, parenchymal, and congenital lesions, infections, and post-operative 'failed back' syndromes


An element of the lanthanide group; atomic no. 64, atomic wt. 157.25. The magnetic properties of this element are used in contrast media for magnetic resonance imaging.


A very rare metallic element useful for its sensitivity to electromagnetic resonance, among other things. Traces of it can be injected into the body to enhance the MRI pictures.


(Gd) (gad'ō-lin'ē-ŭm)
An element of the lanthanide group; magnetic properties of this element are used in contrast media for magnetic resonance imaging.

Patient discussion about gadolinium

Q. Has anyone had an allergic reaction to gadolinium dye, MRI contrast agents, I have had a severe reaction. I would like to know the long term effects of this dye. And if anyone else has had or heard of problems and reactions to it. Please answer me. Thank you

A. In 1969 I almost died from the IVP dye. I had no idea I was allergic and when I awoke I was in a "recovery room." The doctor told me to always tell any physicians/paramedics etc of my allergy status regarding the dye. I now have chronic back pain, have a history of cancer in the family and the doctor wants to do a scan (including dye) but when I emphasized that I was allergic he backed off. Now I am wondering if there is anything else that can be done to test the bone (scan) without the dye. Any answers? Thanks

More discussions about gadolinium
References in periodicals archive ?
Gadolinium is used in as many as 45% of MRI exams in the United States.
gadolinium bound to a chelate) are far less toxic because the chelate carries the tightly bound gadolinium ions through the kidneys and out of the body before free ions can be released.
Dr Giles Roditi, gadolinium lead at the Royal College of Radiologists (RCR), says the risks of the contrast are "comparatively very small" when compared with the unwell patients who need diagnosis and treatment.
The use of gadolinium in patients with contrast allergy or renal failure requiring coronary angiography, coronary intervention, or vascular procedure.
Despite that there is no obvious GBCA-mediated cytological changes, we observed different gadolinium concentrations in macrophages measured by ICP-MS.
It can be seen that regardless of the gadolinium content the average size of MNPs is 14 nm (excluding the MNP-Gd4.3% sample).
Caption: Figure 6: Cardiac magnetic resonance imaging showing a thrombus in the left ventricule apex and late gadolinium enhancement (LGE).
Gadolinium (III) nitrate hexahydrate, Gd[(N[O.sub.3]).sub.3] x 6[H.sub.2]O (99.9%), and cetyltrimethylammonium bromide, CTAB ([greater than or equal to] 98%) were purchased from Sigma-Aldrich.
Interference of gadolinium on the measurement of selenium in human serum by inductively coupled plasma-quadrupole mass spectrometry.
"Recent progress in advanced optical materials based on gadolinium aluminate garnet (Gd3Al5O12)"