Boris Epel, Subramanian V. Sundramoorthy, Howard J. Halpern
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引用次数: 1
Abstract
A simple scheme for dynamically switching the quality factor, Q, of a loop-gap resonator (LGR); working at 250 MHz is presented. The addition of this Q-modulator resulted in 30% improvement in electron paramagnetic resonance imager signal-to-noise ratio. During pulse excitation, this scheme lowered the Q, while higher Q was obtained during signal detection. These conditions favored the image acquisition. The Q-modulator is passive; the transition between different states was actuated by the radio frequency power itself.
期刊介绍：
Concepts in Magnetic Resonance Part B brings together engineers and physicists involved in the design and development of hardware and software employed in magnetic resonance techniques. The journal welcomes contributions predominantly from the fields of magnetic resonance imaging (MRI), nuclear magnetic resonance (NMR), and electron paramagnetic resonance (EPR), but also encourages submissions relating to less common magnetic resonance imaging and analytical methods.
Contributors come from both academia and industry, to report the latest advancements in the development of instrumentation and computer programming to underpin medical, non-medical, and analytical magnetic resonance techniques.
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