Abstract #3132

Comparison Between Radial and Cartesian Sampling Patterns in Accelerated Real-Time Cardiac Cine MRI

Elwin Bassett¹, Ganesh Adluru², Brent D. Wilson³, Cory Nitzel³, Tobias Block⁴, Hassan Haji-Valizadeh⁵, Edward VR DiBella², and Daniel Kim²

¹Physics, University of Utah, Salt Lake City, UT, United States, ²Radiology, UCAIR, University of Utah, Salt Lake City, UT, United States, ³Internal Medicine, Division of Cardiology, University of Utah, Salt Lake City, UT, United States, ⁴School of Medicine, Radiology, New York University, New York, NY, United States, ⁵Bioengineering, University of Utah, Salt Lake City, UT, United States

To date, no study has compared 12-fold accelerated real-time cine MRI with compressed sensing (CS) between Cartesian and radial k-space sampling schemes. We sought to compare their performance in patients and volunteers. We compared point spread functions (PSF) to determine which sampling pattern generates more incoherent aliasing artifacts. We also compared their performance in a group of 15 patients and one volunteer, where 3-fold accelerated product real-time MRI was used as reference. Two cardiologists independently graded images from each subject.

PSF analysis showed that radial produces more incoherent aliasing artifacts. Image quality was better for radial than Cartesian sampling schemes.

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