NDLI: Physical Properties of Eu$ ^{2+}$ ‐Containing Cryptates as Contrast Agents for Ultrahigh‐Field Magnetic Resonance Imaging

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Physical Properties of Eu$ ^{2+}$ ‐Containing Cryptates as Contrast Agents for Ultrahigh‐Field Magnetic Resonance Imaging

Content Provider	Scilit
Author	Garcia, Joel Kuda‐Wedagedara, Akhila N. W. Allen, Matthew J.
Copyright Year	2012
Description	Journal: European Journal of Inorganic Chemistry The kinetic stabilities and relaxivities of a series of $Eu^{2+}$‐containing cryptates have been investigated. Transmetallation studies, which monitored the change in the longitudinal relaxation rate of water protons in the presence of $Ca^{2+}$, $Mg^{2+}$, and $Zn^{2+}$, demonstrated that the cryptate structure influenced the stability, and two of the cryptates studied were inert to transmetallation in the presence of these endogenous ions. The efficacy of these cryptates was determined at different magnetic field strengths, temperatures, and pH values. Cryptate relaxivity was found to be higher at ultrahigh field strengths (7 and 9.4 T) relative to clinically relevant field strengths (1.4 and 3 T), but the efficiency of these cryptates decreased as the temperature increased. In addition, a variation in pH did not yield significant changes in the efficacy of the cryptates. These studies establish a foundation of important properties that are necessary to develop effective positive contrast agents for magnetic resonance imaging from $Eu^{2+}$‐containing cryptates.
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3358779/pdf
Ending Page	2140
Page Count	6
Starting Page	2135
ISSN	14341948
e-ISSN	10990682
DOI	10.1002/ejic.201101166
Journal	European Journal of Inorganic Chemistry
Issue Number	12
Volume Number	2012
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2012-02-08
Access Restriction	Open
Subject Keyword	Journal: European Journal of Inorganic Chemistry Radiology, Nuclear Medicine and Imaging Imaging Agents Magnetic Resonance Imaging
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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