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Optimization of Contrast-Enhanced MR Angiography of the Hands with a Timing Bolus and Elliptically Reordered 3D Pulse Sequence

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84187

Scheffler,  K
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Winterer, J., Scheffler, K., Paul G, Hauer M, Schäfer O, Altehoefer, C., & Laubenberger, J. (2000). Optimization of Contrast-Enhanced MR Angiography of the Hands with a Timing Bolus and Elliptically Reordered 3D Pulse Sequence. Journal of Computer Assisted Tomography, 24(6), 903-908. Retrieved from http://journals.lww.com/jcat/pages/articleviewer.aspx?year=2000issue=11000article=00017type=abstract.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-E3FA-A
Abstract
Our objective was to optimize bolus administration and sequence setting in gadolinium-enhanced magnetic resonance (MR) angiography of the hands. Elliptically reordered three-dimensional (3D) spoiled gradient-echo sequence with non-slab-selective radio frequency excitation was optimized according to the measurements of arterial and venous time-signal curves in 21 patients. Great variations in bolus arrival time and arterio-venous transit time could be observed. In most patients high-quality arterial depiction could be obtained with minor venous contamination. Contrast-to-noise, spatial resolution, and selective arterial filling is still a challenge for 3D MR angiography of the hand but can be optimized using Gadolinium-BOPTA and a dedicated pulse sequence setting with exact bolus timing.