Gadolinium retention in rat abdominal organs after administration of gadoxetic acid disodium compared to gadodiamide and gadobutrol

Purpose To compare gadolinium retention in the abdominal organs after administration of gadoxetic acid disodium, a liver‐specific contrast agent, compared to gadodiamide and gadobutrol. Methods Three types of gadolinium‐based contrast agents (GBCAs) were administered to rats. A single (gadodiamide a...

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Published in:Magnetic resonance in medicine 2020-10, Vol.84 (4), p.2124-2132
Main Authors: Oh, Hyewon, Chung, Yong Eun, You, Je Sung, Joo, Chan Gyu, Kim, Pan Ki, Lim, Joon Seok, Kim, Myeong‐Jin
Format: Article
Language:English
Subjects:
Abdomen
Acids
Animals
Bone mass
Chelating agents
Chelation
Contrast agents
Contrast Media
Gadolinium
Gadolinium DTPA
gadoxetic acid disodium
Inductively coupled plasma mass spectrometry
Kidneys
Liver
magnetic resonance imaging
Mass spectrometry
Mass spectroscopy
Muscles
Organometallic Compounds
Organs
Rats
Retention
Spleen
Statistical analysis
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Summary:Purpose To compare gadolinium retention in the abdominal organs after administration of gadoxetic acid disodium, a liver‐specific contrast agent, compared to gadodiamide and gadobutrol. Methods Three types of gadolinium‐based contrast agents (GBCAs) were administered to rats. A single (gadodiamide and gadobutrol, 0.1 mmol/kg; gadoxetic acid disodium, 0.025 mmol/kg) or double label‐recommended dose was intravenously administered once (Group 1), a single dose was administered 4 times (Group 2) and a single dose with or without a chelating agent (intraperitoneal injection immediately after each GBCA administration) was administered (Group 3). Rats were sacrificed after 1, 4, and 12 weeks and gadolinium concentrations in the liver, spleen, kidney, muscle, and bone were measured by inductively coupled plasma mass spectrometry. P values less than 0.05 were considered statistically significant. Results More gadolinium was retained with a double dose compared to a single dose, but there was no observed significant difference in gadolinium retention after a double dose compared to a single dose (P > .05). Gadodiamide was retained the most in all tissues followed by gadobutrol and gadoxetic acid disodium. Residual gadolinium was significantly less at 4 weeks compared to 1 week (P < .05), but no further decrease was observed after 4 weeks (P > .05). The presence of the chelating agent did not significantly decrease the concentration of residual gadolinium (P > .05). Conclusion Gadolinium was retained the least in abdominal organs after gadoxetic acid disodium was administered and most of the residual gadolinium was excreted 4 weeks after GBCA administration when a label‐recommended dose was administered. A commercially available chelation therapy agent could not reduce gadolinium retention.
ISSN:0740-3194
1522-2594
DOI:10.1002/mrm.28249