Free-breathing 3D pulmonary ventilation mapping at 0.55 T using stack-of-spiral out-in bSSFP.

Ziwei Zhao^1,2, Nam G Lee³, Bilal Tasdelen¹, Xin Miao⁴, Ye Tian¹, Bochao Li³, Sophia X Cui⁵, Krishna S Nayak^1,3

¹Ming Hsieh Department of Electrical and Computer Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA.

²Vista AI, Inc., Palo Alto, California, USA.

³Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA.

⁴Department of Radiology, Children's Hospital Los Angeles, Los Angeles, California, USA.

⁵Siemens Medical Solutions USA, Inc, Los Angeles, California, USA.

PubMed PMC DOI PDF

Abstract

PURPOSE: To develop a free-breathing pulmonary imaging technique that provides three-dimensional (3D) structural images and regional ventilation maps, and to evaluate its repeatability and accuracy compared with two-dimensional phase-resolved functional lung (PREFUL) and global tidal volume. METHODS: A free-breathing 3D stack-of-spiral out-in (SOS out-in) balanced steady-state free precession (bS…

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