Keywords: MR-Guided Interventions, MR-Guided Interventions
Motivation: Selective labeling of arterial blood with a catheter-mounted transmit RF-coil has the potential to replace repeated contrast agent injections during MR-guided procedures.
Goal(s): This study investigates the requirements for robust labeling with a catheter coil under variations of catheter positioning and blood flow.
Approach: The labeling process is investigated with analytical calculations, numerical simulations and in-vitro measurements.
Results: Robust labeling of at least 25% is achieved by a labeling pulse amplitude of 0.5 V for a single-loop coil and 1.25 V for a solenoid coil.
Impact: Robust and efficient intra-arterial spin labeling can be achieved for perfusion measurements during MR-guided interventions.
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