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Abstract #1201

Fully Exploiting the PILS Effect for High Performance Joint imaging: Benefits of Coil Arrays with S/I Sensitivity

Habib Al saleh 1 , Richard Kijowski 2 , and Walter F Block 1,3

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

For a single row, phased array knee coil, the azimuthal coil arrangement reduces sensitivity in the transverse plane and hence the PILS effect reduces the number of radial lines required to fully sample an axial slice. However, accelerating volumetric scans is limited as the coil arrangement provides no variation in sensitivity in the S/I dimension . We compare the impact of a multiple row arrangement against a single coil design in 3D radial joint imaging through the following 2 studies: 1) varying the undersampling factor for a given resolution while maintaining the same stochastic noise level and 2) a comparison of image quality with challenging 0.33 mm isotropic resolution scan in 8 minutes. Preliminary results demonstrate significantly higher image through use of a multiple row coil with S/I sensitivity.

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