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Abstract #4468

Feasibility of 3D Balanced SSFP-ASL of the Kidneys at 3.0T

Koji Fujimoto1, Aki Kido2, Kyoko Takakura2, Hajime Sagawa2, Shigeaki Umeoka2, Naotaka Sakashita3, Tokunori Kimura3, Yasutaka Fushimi2, Kaori Togashi2

1Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, Japan; 2Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan; 3Toshiba Medical Systems Corporation, Otawara, Tochigi, Japan

Because of the higher risk for NSF, there is an increased requirement to non-invasively evaluate the function of the diseased kidneys. We investigated feasibility of 3D-bSSFP MRA for the kidney by comparing with FFE readout. 3D-ASTAR-ASL was performed for five healthy volunteers at Toshiba 3.0T MRI system. Inversion time (TI) between the saturation pulse and readout varied from 800, 1200, 1600, 2000, 2400 msec. bSSFP was superior to FFE both for quantitative analysis (contrast ratio of the kidney/vertebra, and intestines/vertebra) and qualitative analysis (visualization of the renal perfusion, effectiveness of background suppression, and degree of misregistration) at any TI.

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Keywords

abdomen abdominal addition advantage although application array arterial asymmetric audience axis back background bandwidth better blood body brain clinicians coils comparing complicated considered contrast coronal corporation critical degree developed diagnostic diseased effectiveness evaluation evaluations examinations except fast feasibility field five flow flowing frequency front function good graduate hand healthy hence identical include intensity interpretation intestines intrinsic invasive inversion japan kidney kidneys labeling lack limitations limited long magma mainly materials matrix measured medical medicine moderate nuclear oblique organ organs orientation pair parallel patent perfusion pixel placed poor preparation progress protons pulse qualitative quantification quantitative radiologist readout recent recovery relationship relevant renal report reproducibility respect respectively respiratory risk saturation scale school score scored selective several slab slice slices smaller speeder spin stable subject subjects superior suppression system systemic systems taking target targeting technically technicians tissue tracer transient transit trigger utility utilizing variability varied variety vertebra vessels visualization visualize volume volunteers wait wide winter