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Abstract #2444

Simple Method for Attenuation of Streaking Artifacts from Peripheral Intensity Accumulation

Kai Tobias Block1, Matthias Fenchel2

1Department of Radiology, NYU Langone Medical Center, New York, NY, United States; 2Siemens AG Healthcare Sector, Erlangen, Germany

Images acquired with radial k-space sampling frequently suffer from mild or severe streaking artifacts even if the Nyquist sampling requirements are fulfilled. Often, the streaking artifacts arise from high-intensity signal spots in the periphery of the field-of-view. This work describes a simple method to attenuate such long-distance streaks by constraining the image contributions from each coil element to only those areas where the element is known to have sufficient sensitivity. The method works fully automatic, does not affect the SNR or prolong the scan time, and achieved clear improvement of the image quality in volunteer studies.