Assessing the Feasibility of Dynamic P Spectroscopy for Metabolic Studies With a 1.0T Extremity Scanner.

Objective: The feasibility of conducting in vivo non-localized P Magnetic Resonance Spectroscopy (MRS) with a 1.0T extremity scanner and the potential to increase accessibility of this important diagnostic tool for low cost applications is revisited.

Methods: This work presents a custom transmit-only quadrature birdcage, four-element receive coil array, and spectrometer interfaced to a commercial ONI 1.

Feasibility of Using a 1T Extremity Scanner with a Four-Element Array to Detect P in the Human Calf.

The feasibility of conducting in vivo non-localized skeletal muscle P Magnetic Resonance Spectroscopy (MRS) with a low-cost extremity 1 Tesla magnet is demonstrated. We designed and built a transmit-only quadrature birdcage, four-element receive coil array, and employed a home-built spectrometer interfaced with a commercial ONI 1.0T magnet.

Flexible RF Filtering Front-End For Simultaneous Multinuclear MR Spectroscopy.

Simultaneously interrogation of multiple nuclei has been of interest since the very earliest days of MRI [1]-[3]. Our group and several others are revisiting this topic [4]-[6]. Very fast broadband electronics make it possible to digitize a wide spectrum, including multiple nuclei, but this places great demands on data throughput.

An Adjustable-Length Dipole Using Forced-Current Excitation for 7T MR.

Ultrahigh field imaging of the body and the spine is challenging due to the large field-of-view (FOV) required. It is especially difficult for RF transmission due to its requirement on both the length and the depth of the ${\rm{B}}_{1}^{{\rm + }}$ field. One solution is to use a long dipole to provide continuous current distribution.