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Recent experiments have shown that transverse relaxation (TR) T2-based in vivo oxygen electron paramagnetic resonance imaging results are confounded by the effects of additional relaxation mechanisms. On the contrary, spin-lattice relaxation (SLR) T1-based oxymetry is more precise and nearly free from those interfering mechanisms. In this article we study the differences between TR and SLR in vivo...
This paper shows that even a simple proportional-integral-derivative (PID) controller can be used in a clinical MRI system for real-time navigation of a ferromagnetic bead along a predefined trajectory. Although the PID controller has been validated in vivo in the artery of a living animal using a conventional clinical MRI platform, here the rectilinear navigation of a ferromagnetic bead is assessed...
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