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Paramagnetic agents for contrast-enhanced NMR imaging: a review
AJR. American Journal of Roentgenology
|December 1, 1983
Summary
Paramagnetic agents enhance nuclear magnetic resonance (NMR) imaging by improving proton relaxation. This contrast enhancement increases signal intensity, expanding diagnostic capabilities in targeted organs.
Area of Science:
- Medical Imaging
- Biophysics
- Radiology
Background:
- Nuclear Magnetic Resonance (NMR) imaging offers diagnostic potential.
- Contrast enhancement can improve NMR imaging quality.
- Paramagnetic agents are being investigated for this purpose.
Purpose of the Study:
- To explore the use of paramagnetic agents for contrast enhancement in NMR imaging.
- To investigate the effect of these agents on proton relaxation times (T1 and T2).
Main Methods:
- Administration of paramagnetic agents (oral or intravenous).
- Observation of changes in T1 and T2 relaxation times.
- Utilizing the Vanderbilt Technicare 0.5 T NMR imager for experiments.
Main Results:
- Paramagnetic agents enhance proton relaxation in targeted organs.
- A decrease in T1 and T2 relaxation times was observed.
- This decrease resulted in increased signal intensity on NMR images.
Conclusions:
- Paramagnetic agents can significantly enhance contrast in NMR imaging.
- These agents hold promise for extending the diagnostic applications of NMR.
- Development focuses on agents with paramagnetic ions or stable free radicals.