Volume 36, Issue 7 pp. 726-728
Communication
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A “Smart” Magnetic Resonance Imaging Agent That Reports on Specific Enzymatic Activity

Rex A. Moats

Rex A. Moats

The Beckman Institute, 139-74, California Institute of Technology, Pasadena, CA 91125 (USA), Fax: Int. code +(818)449-5163, e-mail: [email protected]

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Scott E. Fraser

Scott E. Fraser

The Beckman Institute, 139-74, California Institute of Technology, Pasadena, CA 91125 (USA), Fax: Int. code +(818)449-5163, e-mail: [email protected]

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Dr. Thomas J. Meade

Corresponding Author

Dr. Thomas J. Meade

The Beckman Institute, 139-74, California Institute of Technology, Pasadena, CA 91125 (USA), Fax: Int. code +(818)449-5163, e-mail: [email protected]

The Beckman Institute, 139-74, California Institute of Technology, Pasadena, CA 91125 (USA), Fax: Int. code +(818)449-5163, e-mail: [email protected]Search for more papers by this author
First published: April 18, 1997
Citations: 306

This research was supported by the Baxter Foundation, the Beckman Institute, and the NIH (AR42671). The authors thank Eric Ahrens and Russell Jacobs for helpful discussions and for assistance with the acquisition of MR images.

Graphical Abstract

A noninvasive means to map biological structure is offered by magnetic resonance imaging (MRI). A new class of MRI contrast agents is described where the relaxivity of the complex is modified by the activity of a specific enzyme (β-galactosidase, [Eq. (a)]). This type of agent offers the promise of direct three-dimensional visualization of gene expression in the form of an acquired MR image.

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