Items tagged “mri contrast”
13 results found
Article
Gadolinium contrast agents
Gadolinium-based contrast media (GBCM), gadolinium-based contrast agents (GBCAs), or simply gadolinium contrast agents, are molecular complexes containing the rare earth metal gadolinium, chelated to a carrier ligand. They are a type of paramagnetic contrast agent, which are the primary class of...
Article
MRI contrast agents
MRI contrast agents have become an indispensable part of contemporary magnetic resonance imaging. Although MRI was initially hoped to provide a means of making definitive diagnoses without administering contrast media, it has been found that the addition of contrast agents in many cases improves...
Article
Hepatobiliary MRI contrast agents
Hepatobiliary MRI contrast agents are specialized contrast agents used to aid diagnosis in MRI.
They are separated into three categories: gadolinium-based agents, manganese-based agents and superparamagnetic iron oxide particles.
Gadolinium-based agents
Gadolinium (Gd) based contrast agents ...
Article
Gadoxetate disodium
Gadoxetate disodium (also known by the tradenames Primovist in Europe and Australia/New Zealand and Eovist in the United States) is a hepatospecific paramagnetic gadolinium-based contrast agent, used exclusively in MRI liver imaging. Its primary use is in hepatic lesion characterization, i.e. as...
Article
Hyperintense on T1-weighted images (mnemonic)
Mnemonics for hyperintense T1-weighted lesions include:
My Best Friend is Pretty Cool
3 Fs and 4 Ms
Mnemonic
My Best Friend is Pretty Cool:
M: melanin
B: blood (i.e. methemoglobin in subacute hemorrhage)
F: fat and slow flow
P: protein; paramagnetic substances (e.g. manganese, copper); p...
Article
Gadofosveset trisodium
Gadofosveset trisodium (also known as Ablavar or Vasovist) is an intravenous blood pool contrast agent used in magnetic resonance imaging. The manufacturer discontinued production in 2017 due to poor sales.
It was designed as an agent for contrast-enhanced MR angiography since it exhibits stron...
Article
Gadobutrol
Gadobutrol (also known as Gadovist/Gadavist) is an extracellular intravenous contrast agent used in magnetic resonance imaging.
cyclic, non-ionic molecule
100% renally excreted
T1 relaxivity at 1.5 T: 4.9-5.5 (slightly higher than other extracellular contrast agents)
concentration: 1.0 mmol...
Article
Gadoterate meglumine
Gadoterate meglumine (also known as gadoteric acid and by the tradename Dotarem) is an intravenous extracellular gadolinium-based MRI contrast agent.
cyclic, ionic molecule
100% renally-excreted
T1 relaxivity at 1.5 T: 3.4-3.8 L/mmol.S (slightly lower than other extracellular contrast agents...
Article
Gadoteridol
Gadoteridol (also known as ProHance) is an extracellular intravenous contrast agent used in magnetic resonance imaging.
cyclic, non-ionic molecule
100% renally excreted
T1 relaxivity at 1.5 T: 3.9-4.3
concentration: 0.5 mmol/mL
recommended dosage: 0.1 mmol/kg
Indications...
Article
Gadodiamide
Gadodiamide (brand name: Omniscan) is an extracellular intravenous contrast agent used in magnetic resonance imaging.
linear, non-ionic molecule
100% renally excreted
T1 relaxivity at 1.5 tesla: 4.0-4.6
concentration: 0.5 mmol/mL
recommended dosage: 0.1 mmol/kg
Indications
As an extracel...
Article
Gadoversetamide
Gadoversetamide (also known as OptiMARK) is an extracellular intravenous contrast agent used in magnetic resonance imaging.
linear, non-ionic molecule
100% renally excreted
T1 relaxivity at 1.5 T: 4.4-5.0
concentration: 0.5 mmol/mL
recommended dosage: 0.1 mmol/kg
Indications
As an extrac...
Article
Gadopentetate dimeglumine
Gadopentetate dimeglumine (also known as Magnevist) is an extracellular intravenous contrast agent used in magnetic resonance imaging.
linear, ionic molecule
100% renally excreted
T1 relaxivity @ 1.5 T: 3.9-4.3
concentration: 0.5 mmol/mL
recommended dosage: 0.1 mmol/kg
Indications
As an ...
Article
Gadobenate dimeglumine
Gadobenate dimeglumine (also known as MultiHance) is an extracellular intravenous contrast agent used in magnetic resonance imaging.
linear, ionic molecule
95-96% renal excretion, 4-5% hepatic excretion
T1 relaxivity @ 1.5 T: 6.0-6.6
concentration: 0.5 mmol/mL
recommended dosage: 0.1 mmol/...
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