Extravascular toxicity of two magnetic resonance contrast agents. Preliminary experience in the rat.
We compared the relative toxicities of standard concentrations of two magnetic resonance imaging (MRI) contrast agents, ionic gadolinium diethylenetriaminepentacetic acid (DTPA) and low-osmolar gadolinium-1, 4, 7 tris (carboxymethyl)-10-(2'-hydroxypropyl)-1, 4, 7, 10 tetra-azacyclododecane (HP-DO3A) with that of the conventional radiographic contrast medium meglumine diatrizoate, when extravasated into the deep dermal tissues of laboratory rats. Gadolinium-DTPA caused moderate necrosis, hemorrhage, and edema which was not statistically different than meglumine diatrizoate. In contrast, gadolinium HP-DO3A was significantly less toxic than meglumine diatrizoate. Additional experience will be needed in order to determine whether these laboratory results will be clinically relevant in humans.
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- Rats, Inbred Strains
- Rats
- Pentetic Acid
- Osmolar Concentration
- Organometallic Compounds
- Nuclear Medicine & Medical Imaging
- Male
- Magnetic Resonance Imaging
- Heterocyclic Compounds
- Gadolinium DTPA
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Rats, Inbred Strains
- Rats
- Pentetic Acid
- Osmolar Concentration
- Organometallic Compounds
- Nuclear Medicine & Medical Imaging
- Male
- Magnetic Resonance Imaging
- Heterocyclic Compounds
- Gadolinium DTPA