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One or more keywords matched the following properties of Halpern, Howard
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overview Howard J. Halpern, MD, PhD, specializes in medical imaging techniques. He is an expert in very low frequency-imaging-electron paramagnetic resonance (VLF-I-EPR). This technique enables measurement of changes in oxygen content in tumor tissues--a key determinant of response to radiation therapy. Dr. Halpern is the co-author of a textbook on free radical biology. He serves as the principal investigator for the Oversight Committee for the Laboratory Training of Radiation Oncology Residents.
One or more keywords matched the following items that are connected to Halpern, Howard
Item TypeName
Concept Electrons
Concept Electron Spin Resonance Spectroscopy
Concept Positron-Emission Tomography
Academic Article Kinetically specific spin-label substrates of liver alcohol dehydrogenase and of liver aldehyde dehydrogenase.
Academic Article In vivo spin-label murine pharmacodynamics using low-frequency electron paramagnetic resonance imaging.
Academic Article Spin trapping of nitric oxide by ferro-chelates: kinetic and in vivo pharmacokinetic studies.
Academic Article Use of a low-frequency ESR spectrometer: implications for spin-trapping free radicals, in situ.
Academic Article A one-step synthesis of 2-(2-Pyridyl)-3H-indol-3-one N-oxide: is it an efficient spin trap for hydroxyl radical?
Academic Article In vivo detection of free radicals in real time by low-frequency electron paramagnetic resonance spectroscopy.
Academic Article Electron spin relaxation of triarylmethyl radicals in fluid solution.
Academic Article Imaging spin probe distribution in the tumor of a living mouse with 250 MHz EPR: correlation with BOLD MRI.
Academic Article General synthesis of persistent trityl radicals for EPR imaging of biological systems.
Academic Article Esters of 5-carboxyl-5-methyl-1-pyrroline N-oxide: a family of spin traps for superoxide.
Academic Article In vivo in situ detection of nitric oxide using low-frequency EPR spectroscopy.
Academic Article Quantitative tumor oxymetric images from 4D electron paramagnetic resonance imaging (EPRI): methodology and comparison with blood oxygen level-dependent (BOLD) MRI.
Academic Article Influence of conformation on the EPR spectrum of 5,5-dimethyl-1-hydroperoxy-1-pyrrolidinyloxyl: a spin trapped adduct of superoxide.
Academic Article Oral administration is as effective as intraperitoneal administration of amifostine in decreasing nitroxide EPR signal decay in vivo.
Academic Article Electron paramagnetic resonance oxygen images correlate spatially and quantitatively with Oxylite oxygen measurements.
Academic Article Spatially uniform sampling in 4-D EPR spectral-spatial imaging.
Academic Article Comparison of local and global angular interpolation applied to spectral-spatial EPR image reconstruction.
Academic Article Nitroxide conjugate of a thermally responsive elastin-like polypeptide for noninvasive thermometry.
Academic Article Spin echo spectroscopic electron paramagnetic resonance imaging.
Academic Article Spin trapping biologically generated free radicals: correlating formation with cellular injury.
Academic Article Anti-HER2 immunoliposomes for selective delivery of electron paramagnetic resonance imaging probes to HER2-overexpressing breast tumor cells.
Academic Article Where it's at really matters: in situ in vivo vascular endothelial growth factor spatially correlates with electron paramagnetic resonance pO2 images in tumors of living mice.
Academic Article Object dependent sweep width reduction with spectral-spatial EPR imaging.
Academic Article Simulation of 4D spectral-spatial EPR images.
Academic Article Very-low-frequency electron paramagnetic resonance (EPR) imaging of nitroxide-loaded cells.
Academic Article The solution conformation of triarylmethyl radicals.
Academic Article Frequency bandwidth extension by use of multiple Zeeman field offsets for electron spin-echo EPR oxygen imaging of large objects.
Academic Article Cellular uptake of electron paramagnetic resonance imaging probes through endocytosis of liposomes.
Academic Article Electron paramagnetic resonance oxygen imaging of a rabbit tumor using localized spin probe delivery.
Academic Article Multiple-stepped Zeeman field offset method applied in acquiring enhanced resolution spin-echo electron paramagnetic resonance images.
Academic Article Direct measurement of nitroxide pharmacokinetics in isolated hearts situated in a low-frequency electron spin resonance spectrometer: implications for spin trapping and in vivo oxymetry.
Academic Article Comparison of 250 MHz electron spin echo and continuous wave oxygen EPR imaging methods for in vivo applications.
Academic Article Reduction of image artifacts in mice by bladder flushing with a novel double-lumen urethral catheter.
Academic Article Electron paramagnetic resonance oxygen image hypoxic fraction plus radiation dose strongly correlates with tumor cure in FSa fibrosarcomas.
Academic Article In situ detection, by spin trapping, of hydroxyl radical markers produced from ionizing radiation in the tumor of a living mouse.
Academic Article Measurement of differences in pO2 in response to perfluorocarbon/carbogen in FSa and NFSa murine fibrosarcomas with low-frequency electron paramagnetic resonance oximetry.
Academic Article Oxidative stress imaging in live animals with techniques based on electron paramagnetic resonance.
Academic Article Diminished aqueous microviscosity of tumors in murine models measured with in vivo radiofrequency electron paramagnetic resonance.
Academic Article Measurement of bioreduction rates of cells with distinct responses to ionizing radiation and cisplatin.
Academic Article Spectral fitting: the extraction of crucial information from a spectrum and a spectral image.
Academic Article Targeted-ROI imaging in electron paramagnetic resonance imaging.
Academic Article Scaling of EPR spectral-spatial images with size of sample: images of a sample greater than 5 cm in linear dimension.
Academic Article Oxymetry deep in tissues with low-frequency electron paramagnetic resonance.
Academic Article Radiation oxygen biology with pulse electron paramagnetic resonance imaging in animal tumors.
Academic Article Comparison of parabolic filtration methods for 3D filtered back projection in pulsed EPR imaging.
Academic Article Absolute oxygen R1e imaging in vivo with pulse electron paramagnetic resonance.
Academic Article EPR oxygen images predict tumor control by a 50% tumor control radiation dose.
Academic Article Comparison of pulse sequences for R1-based electron paramagnetic resonance oxygen imaging.
Academic Article Orthogonal resonators for pulse in vivo electron paramagnetic imaging at 250 MHz.
Academic Article What we learn from in vivo EPR oxygen images.
Academic Article EPR image based oxygen movies for transient hypoxia.
Academic Article How in vivo EPR measures and images oxygen.
Academic Article Principal component analysis enhances SNR for dynamic electron paramagnetic resonance oxygen imaging of cycling hypoxia in vivo.
Academic Article In vivo electron paramagnetic resonance imaging of differential tumor targeting using cis-3,4-di(acetoxymethoxycarbonyl)-2,2,5,5-tetramethyl-1-pyrrolidinyloxyl.
Academic Article 3D pulse EPR imaging from sparse-view projections via constrained, total variation minimization.
Academic Article Implementation of GPU-accelerated back projection for EPR imaging.
Academic Article In Vivo pO2 Imaging of Tumors: Oxymetry with Very Low-Frequency Electron Paramagnetic Resonance.
Academic Article Approaching Oxygen-Guided Intensity-Modulated Radiation Therapy.
Academic Article Towards Human Oxygen Images with Electron Paramagnetic Resonance Imaging.
Academic Article A triarylmethyl spin label for long-range distance measurement at physiological temperatures using T1 relaxation enhancement.
Academic Article Fast dynamic electron paramagnetic resonance (EPR) oxygen imaging using low-rank tensors.
Academic Article EPR Imaging Spin Probe Trityl Radical OX063: A Method for Its Isolation from Animal Effluent, Redox Chemistry of Its Quinone Methide Oxidation Product, and in Vivo Application in a Mouse.
Academic Article Imaging thiol redox status in murine tumors in vivo with rapid-scan electron paramagnetic resonance.
Academic Article Maximally spaced projection sequencing in electron paramagnetic resonance imaging.
Academic Article A simplified Katsevich algorithm motivated by the distribution properties of k-lines.
Academic Article Electron paramagnetic resonance oxygen imaging of a rabbit tumor using localized spin probe delivery.
Academic Article In vivo preclinical cancer and tissue engineering applications of absolute oxygen imaging using pulse EPR.
Academic Article Rapid-scan EPR imaging.
Academic Article Electron Paramagnetic Resonance pO2 Image Tumor Oxygen-Guided Radiation Therapy Optimization.
Academic Article In Vivo EPR Resolution Enhancement Using Techniques Known from Quantum Computing Spin Technology.
Academic Article Correlation Between Hypoxia Proteins and EPR-Detected Hypoxia in Tumors.
Academic Article Triarylmethyl Radical OX063d24 Oximetry: Electron Spin Relaxation at 250 MHz and RF Frequency Dependence of Relaxation and Signal-to-Noise.
Academic Article Spin Lattice Relaxation EPR pO2 Images May Direct the Location of Radiation Tumor Boosts to Enhance Tumor Cure.
Academic Article Optimization-based image reconstruction from sparsely sampled data in electron paramagnetic resonance imaging.
Academic Article Three novel accurate pixel-driven projection methods for 2D CT and 3D EPR imaging.
Academic Article Noninvasive Absolute Electron Paramagnetic Resonance Oxygen Imaging for the Assessment of Tissue Graft Oxygenation.
Academic Article Oxygen-Guided Radiation Therapy.
Academic Article Highly sensitive electron paramagnetic resonance nanoradicals for quantitative intracellular tumor oxymetric images.
Academic Article The clinical utility of imaging methods used to measure hypoxia in cervical cancer.
Academic Article Biological validation of electron paramagnetic resonance (EPR) image oxygen thresholds in tissue.
Academic Article Small Animal IMRT Using 3D-Printed Compensators.
Academic Article Going Low in a World Going High: The Physiologic Use of Lower Frequency Electron Paramagnetic Resonance.
Academic Article Improving Tumor Hypoxia Location in 18F-Misonidazole PET with Dynamic Contrast-enhanced MRI Using Quantitative Electron Paramagnetic Resonance Partial Oxygen Pressure Images.
Academic Article A balanced total-variation-Chambolle-Pock algorithm for EPR imaging.
Academic Article The optimal 18F-fluoromisonidazole PET threshold to define tumor hypoxia in preclinical squamous cell carcinomas using pO2 electron paramagnetic resonance imaging as reference truth.
Academic Article An iterative reconstruction algorithm without system matrix for EPR imaging.
Academic Article Direct Measurement and Imaging of Redox Status with Electron Paramagnetic Resonance.
Concept Positron Emission Tomography Computed Tomography
Grant IMAGING OXYGEN--LOW FREQUENCY ELECTRON SPIN RESONANCE
Grant VERY LOW FREQUENCY EPR IMAGING FOR IN VIVO PHYSIOLOGY
Grant IN VIVO DETECTION OF RADIATION INDUCED FREE RADICALS
Grant Magnitude Improvement of Molecular Signaling Imaging (RMI)
Grant Center for Electron Paramagnetic Resonance Imaging in Vivo Physiology
Academic Article 4D-image reconstruction directly from limited-angular-range data in continuous-wave electron paramagnetic resonance imaging.
Academic Article A Preclinical Positron Emission Tomography (PET) and Electron-Paramagnetic-Resonance-Imaging (EPRI) Hybrid System: PET Detector Module.
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