Characterization, performances and in-vivo validation of a new dual-frequency NMR sensor
We address in this paper the design and performances of a home-built and dedicated double-tuned RF probehead for the MRI in the rat. This probe-head consists of three decoupled RF coils. The field of applications is actually large. The immediate application may concerns the MRI of sodium-23 (23Na) and later the MRI of xenon-129 (129Xe) in the rat brain. The paper will focus on the characterization and the obtained performances as well as on the invivo validation of the probe. One of the underlying ideas is to make this probe easy to replicate, by other groups, with a low-cost, minimum development time and accepted performances. This is why we describe in some details the practical aspects of the workbench design and the coil characterization. The probe is validated at the 1H and the 23Na frequencies (100 MHz and 26.4 MHz at 2.35 T). In vivo MRI images of the rat brain were obtained at the H frequency as well as NMR signals at the 23Na frequency.
MRI rat brain RF double-tuned coils active -decoupling Hyperpolarized xenon-129 Proton sodium-23
Aktham ASFOUR
Laboratoire de Genie Electrique de Grenoble (G2E-Lab) BP 46, 38402 Saint Martin DHeres, France
国际会议
上海
英文
1061-1065
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）