Wolfgang Kilian1, Sergey Korchak1, Lorenz Mitschang1, Bastiaan Driehuys2
1Physikalisch-Technische Bundesanstalt, Berlin, Germany; 2Center for In Vivo Microscopy, Duke University, Durham, NC, United States
For the production of hyperpolarized 129Xe gas a low-field online NMR helps to find and control the optimum parameters for the spin exchange optical pumping process. We developed a system comprising just three hardware components: first, a small hand-wound transmit-receive surface coil; second, a home-made circuitry; and, third, a commercial multi I/O card controlled by a PC. We will describe the circuit and show measurements to calibrate the effective flip angle for both, thermally polarized 1H in water and hyperpolarized 129Xe gas. Also analytical calculations were performed to validate the measured 129Xe signal strength.