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A potentially artifact-free oral contrast agent for gastrointestinal MRI |
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| Authors: | Thomas Liebig Christophoros Stoupis Pablo R. Ros J. Ray Ballinger Richard W. Briggs |
| Abstract: | The combination of diamagnetic barium sulfate and superparamagnetic iron oxide (SPIO) in one suspension produces a macroscopic cancellation of positive and negative magnetic susceptibility components that can potentially eliminate susceptilbllity artifacts even with gradient echo pulse sequences. The relaxation properties that make the SPIO suspension a useful negative contrast agent are retained. |
| Keywords: | contrast agent susceptibility artifact paramagnetic diamagnetic |