Browsing Citations Only by Author "Hornak, Joseph"

Now showing items 1-8 of 8

    • Application of dense microemulsions to magnetic resonance imaging 

      Roe, Jo; Ramanan, Deva; Hornak, Joseph; Kotlarchyk, Michael (Elsevier Science B.V., Amsterdam, 1996-09-15)
      Microemulsions have recently been proposed as the signal-bearing solution for use in a magnetic resonance imaging phantom. We have attempted to characterize the hydrogen nuclear spin system of paramagnetically doped water, ...

    • Classification of trabecular structure in magnetic resonance images based on morphological granulometries. 

      Chen, Yidong; Dougherty, Edward; Totterman, Saara; Hornak, Joseph (Wiley: Magnetic Resonance in Medicine, 1993-03)
      A new method of detecting structured changes in trabecular bone, such as those associated with osteoporosis, was evaluated on magnetic resonance images of the wrist. The method was based on gray-scale morphological ...

    • Diffusion coefficients in anisotropic fluids by ESR imaging of concentration profiles 

      Hornak, Joseph; Moscicki, J.; Schneider, Donald; Freed, J. (American Institute of Physics: The Journal of Chemical Physics, 1986-03-15)
      We report on the use of ESR imaging for determining the translational diffusion constants of typical ESR spin probes in ordered and isotropic solvents. A discussion is given for a Fourier deconvolution method for determining ...

    • Magnetic field mapping 

      Hornak, Joseph; Szumowski, J.; Bryant, Robert (Wiley: Magnetic Resonance in Medicine, 1988-02)
      Homogeneous radiofrequency magnetic fields are necessary for production of high-quality magnetic images and for most forms of magnetic resonance spectroscopy. It is often convenient to map the radiofrequency homogeneity ...

    • Motions of water, decane, and bis(2-ethylhexyl)sulfosuccinate sodium salt in reverse micelle solutions 

      Schwartz, Leslie; DeCiantis, C.; Chapman, S.; Kelley, B.; Hornak, Joseph (The American Chemical Society: Langmuir, 1999-08-17)
      Reverse micellar solutions made from the surfactant bis(2-ethylhexyl)sulfosuccinate sodium salt (AOT), water, and decane have been studied using NMR inversion-recovery and pulsed-field gradient experiments. Spin-lattice ...

    • A multipurpose MRI phantom based on a reverse micelle solution. 

      Roe, Jo; Prentice, W.; Hornak, Joseph (Wiley: Magnetic Resonance in Medicine, 1996-01)
      Many chemical solutions for use in magnetic resonance imaging phantoms have been reported in the literature. Each of these solutions has its application-specific advantages and disadvantages. We propose a single reverse ...

    • Phosphorus-31 NMR spectroscopy using a loop-gap resonator 

      Hornak, Joseph; Ceckler, Toni; Bryant, Robert (Elsevier: Journal of Magnetic Resonance, 1986-06-15)
      The loop-gap resonator provides a simple and convenient alternative for large volume probes that are now practical for applications to NMR spectroscopy. A 400 ml probe is described for use in a large-bore magnet which is ...

    • Spin-lattice relaxation time measurements using hybrid CSI--phantom study 

      Hornak, Joseph; Smith, A.; Szumowski, J. (Wiley: Magnetic Resonance in Medicine, 1990-03)
      The spin-lattice relaxation time T1 of multicomponent tissues is often determined by fitting relaxation data to monoexponential functions. This process can lead to large errors in the relaxation time. We describe a procedure ...