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Abstract #3901

Self-Gated Free-Breathing Non-Contrast Renal MRA

Yibin Xie1, 2, Zhaoyang Fan2, Rola Saouaf2, Yutaka Natsuaki3, Gerhard Laub3, Debiao Li, 12

1University of California, Los Angeles, CA, United States; 2Cedars-Sinai Medical Center, Los Angeles, CA, United States; 3Siemens Healthcare, Los Angeles

Free-breathing bSSFP MR angiography with slab-selective inversion preparation has been successfully used in clinic to provide bright blood renal MRA without contrast. It typically uses regulated breathing, respiratory bellow, or pencil-beam navigators to alleviate breathing motion artifacts, all of which have practical issues limiting the usage of this technique. This work attempts to overcome these issues with a self-gating technique which uses the projections of the imaging volume to gate data acquisition. Preliminary results from volunteer studies showed comparable image quality versus conventional navigator-gating.