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Abstract #1211

3Tesla Inflow Inversion Recovery 3D SSFP for Robust Non-Contrast MR Angiography Using Triple Triggering

Naoyuki Takei1, Mitsuharu Miyoshi1, Masayoshi Sugimura2, Takayuki Masui2, Hiroyuki Kabasawa1

1Global Applied Science Laboratory, GE Healthcare, Hino, Tokyo, Japan; 2Radiology, Seirei Hamamatsu General Hospital, Japan

The purpose of this study is to eliminate low and dark flow artifact at descending aorta encountered at 3.0T on 3D Balanced Steady State Free Precession (bSSFP) with slab selective inversion pulse for visualizing renal arteries.@A novel trigger procedure is presented with triple triggers for achieving both carotid and respiratory synchronized data acquisition despite the use of long inversion pulse over 1 second. The comparison study was performed to conventional respiratory trigger alone sequence on 1.5T and 3.0T. Compared to the conventional respiratory trigger the advantage of the proposed approach is robust, uniform and high arterial blood visualization.

Keywords

abdominal acquisition advantage alone although angiography aorta apparent applied approved arterial arteries artifact avoiding axial balanced better blood board body breathing cardiac caused changing channel cine coil composed consistent constant contrast coronal cycle dark descending despite diastole difficult effective eliminate eliminated enable encountered enhanced especially evaluate exhalation expiration field finally firstly five flow free frequency general global gradients healthy hospital hypothesize inflow inhalation inhomogeneous institutional intensity international introduced inversion investigated japan kidney known laboratory location long makes materials matrix moving note novel peak pools precession principal procedure propose proposed pulse quality radiology ranging rather readjusting recently recovery reduce renal respectively respiratory review robust scanned science secondly selective short slab slice slightly slow spectral spin static steady stir strong subjects successfully suppress suppression susceptibility switches synchronizes systolic timing tissues trigger triggered triggering triggers triple tune uniform variable vessels visualization void voided volunteers window