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Abstract #2531

Temporal Tomographic Imaging by Greedy Feteke and Golden Means Sampling

David H. Johnson1, Zhiyu Chen1, Rizwan Ahmad1, Alexandre Samouilov1, Jay L. Zweier1

1Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, United States

A new sampling strategy is proposed and evaluated for tomographic imaging when temporal information is critical. Typical Electron Paramagnetic Resonance Imaging (EPRI) sampling strategies assume a static object and require a priori knowledge about its spatial distribution to produce reconstructions with few streak artifacts and accurate intensities. The new sampling strategy, Greedy Feteke (GF), was compared to a sampling strategy from the MRI projection acquisition literature, Golden Means (GM). A dynamic "washout" phantom was imaged by EPRI using both GF and GM, and GF was found to have superior temporal resolution to GM. The extension to 4D spectral-spatial EPRI is straightforward and compelling for GF sampling, and we anticipate a significant improvement in temporal cardiac EPRI.

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Keywords

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