Charles Springer

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Over the years, Springer and co-workers have: introduced frequency shift reagents for the tissue 23Na magnetic resonance (MR), systematized tissue 23Na quadrupolar effects, systematized in vivoMR effects of bulk magnetic susceptibility (the bases of: fMRI, myocellular -1H2C- frequency splitting, most tissue 1H2O phase shifts, etc.), introduced relaxographic imaging (natural, unsupervised segmentation), and introduced the MR shutter?speed concept. The latter is a correction and generalization of the colloquially used "NMR time-scale" term. The shutter?speed has proven to be important in improving the mathematical modeling of MRI pharmacokinetics – especially of (Dynamic-Contrast-Enhanced) DCE-MRI data. An early success of shutter-speed DCE-MRI pharmacokinetic modeling has been the realization of breast cancer screening with essentially perfect specificity. This solves the very serious high false positive rate problem of mammographic screening. Also, shutter-speed corrections are usuallynecessary in order for DCE-MRI data to be used for accurate molecular imaging of water.

Summary of Current Research

Charles Springer received his B.S. and Ph.D. degrees in Chemistry from St. Louis University and the Ohio State University, respectively. He was a postdoctoral associate at the Aerospace Research Laboratory (Wright?Patterson AFB, Ohio). Springer was a member of the Stony Brook Chemistry faculty for 35 years, and also the Brookhaven National Laboratory Chemistry faculty for the last ten of those. He was AIRC Director for six years, and is a member of the OHSU Physiology and Pharmacology and Biomedical Engineering faculties. Springer has held visiting faculty appointments at CalTech and Harvard Medical School. He has received the U.S. Air Force Research and Development Award, the Brookhaven National Laboratory Science and Technology Award, is a Fellow of the International Society for Magnetic Resonance in Medicine(ISMRM), and chaired the In VivoMagnetic Resonance Gordon Research Conference. He has served on the ISMRM Board of Trustees and serves on the Editorial Boards of NMR in Biomedicineand Contrast Media and Molecular Imaging.

Selected Publications

"Human whole-blood 1H2O longitudinal relaxation with normal and high-relaxivity contrast reagents: Influence of trans-cell-membrane water exchange," Magnetic Resonance in Medicine (Vol: 72, Issue: 6, Page 1746-1754) - 2014

"Intratumor mapping of intracellular water lifetime: Metabolic images of breast cancer?," NMR in Biomedicine (Vol: 27, Issue: 7, Page 760-773) - 2014

"Myelin water mapping by spatially regularized longitudinal relaxographic imaging at high magnetic fields," Magnetic Resonance in Medicine (Vol: 71, Issue: 1, Page 375-387) - 2014

"Feasibility of shutter-speed DCE-MRI for improved prostate cancer detection," Magnetic Resonance in Medicine (Vol: 69, Issue: 1, Page 171-178) - 2013

"Cell membrane water exchange effects in prostate DCE-MRI," Journal of Magnetic Resonance (Vol: 218, Page 77-85) - 2012



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