Ayelet Gamliel1,2, Hyla Allouche-Arnon1,3, Ruppen Nalbandian1,3, Elena Vinogradov4, Aaron K. Grant4, Robert E. Lenkinski4, Claudia M. Barzilay2, J. M. Gomori1, Rachel Katz-Brull1
1Department of Radiology, Hadassah Hebrew University Medical Center, Jerusalem, Israel; 2Medicinal Chemistry, School of Pharmacy , The Hebrew University of Jerusalem, Jerusalem, Israel; 3Department of Physiology, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel; 4Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
An efficient and compact para-hydrogen catalytic converter system for PHIP studies is described. The system consists of local production of small predetermined amounts of hydrogen and an efficient and convenient catalytic converter at ambient pressure. In this system, the enhancement factor per concentration was c.a. 2,100 and c.a.3,500 for 1H- and 13C- ALTADENA studies, respectively. The system proved to be an excellent source of para-hydrogen for PHIP studies in a hospital/MRI suite environment.