Abstract #3347

Rapid, non-contrast thoracic MRA using a combination of stack-of-star k-space sampling, compressed sensing, and self-navigation of respiratory motion

Hassan Haji-valizadeh¹, Nivedita K. Naresh², Jeremy D. Collins², Joshua D. Robinson^3,4, Pascale J. Aouad², Ali M. Serhal², James C. Carr², Cynthia K. Rigsby^4,5, and Daniel Kim²

¹Biomedical Engineering, Northwestern University, Evanston, IL, United States, ²Radiology, Northwestern University, Chicago, IL, United States, ³Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States, ⁴Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States, ⁵Radiology, Northwestern University, Feinberg School of Medicine, Chicago, IL, United States

We sought to highly accelerate high resolution (1.5 mm x 1.5 mm x 1.5 mm) non-contrast thoracic MRA using a combination of compressed sensing, stack-of-stars k-space sampling with variable density, and self-navigation , and we compared its performance against clinical contrast-enhanced MRA in patients with suspected aortic disease.

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