Abstract #1406

Noise and Artifact Reduction in 3D Abdominal and Thoracic Imaging using CAIPIRINHA

Timothy J Colgan^1,2, Karl K Vigen¹, Curtis N Wiens¹, and Scott B Reeder^1,2,3,4,5

¹Radiology, University of Wisconsin, Madison, WI, United States, ²Medical Physics, University of Wisconsin, Madison, WI, United States, ³Biomedical Engineering, University of Wisconsin, Madison, WI, United States, ⁴Medicine, University of Wisconsin, Madison, United States, ⁵Emergency Medicine, University of Wisconsin, Madison, WI, United States

This study investigated Controlled Aliasing In Parallel Imaging Results IN Higher Acceleration (CAIPIRINHA) in combination with Rotated Slab Excitation (ROSE) to reduce parallel imaging artifacts and residual aliasing artifacts using a coronal reconstruction and sagittal excitation. Images acquired using the CAIPIRINHA sampling pattern had fewer parallel imaging artifacts than using a conventional sampling pattern. G-factor analysis also demonstrated improved SNR performance using the CAIPIRINHA sampling pattern. The CAIPIRIHNA sampling pattern when combined with ROSE reduced residual aliasing artifacts and parallel imaging artifacts. This enables higher acceleration factors for shorter scan times, without sacrificing image quality.

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