Johnson, G. A., & Maki, J. H. (1991). In vivo measurement of proton diffusion in the presence of coherent motion. Invest Radiol, 26(6), 540–545. https://doi.org/10.1097/00004424-199106000-00006

Macfall, J. S., Johnson, G. A., & Kramer, P. J. (1991). Comparative water uptake by roots of different ages in seedlings of loblolly pine (Pinus taeda L.). New Phytologist, 119(4), 551–560. https://doi.org/10.1111/j.1469-8137.1991.tb01047.x

MacFall, J. R., Maki, J. H., Johnson, G. A., Hedlund, L., Benveniste, H., & Copher, G. (1991). Diffusion/microcirculation MRI in the rat brain. Magn Reson Med, 19(2), 305–310. https://doi.org/10.1002/mrm.1910190219

Veres, J. S., Cofer, G. P., & Johnson, G. A. (1991). Distinguishing Plant Tissues with Magnetic Resonance Microscopy. American Journal of Botany, 78(12), 1704–1704. https://doi.org/10.2307/2444849

Hedlund, L. W., Maronpot, R. R., Johnson, G. A., Cofer, G. P., Mills, G. I., & Wheeler, C. T. (1991). Magnetic resonance microscopy of toxic renal injury induced by Bromoethylamine in rats. Toxicological Sciences, 16(4), 787–797. https://doi.org/10.1093/toxsci/16.4.787

Hedlund, L. W., Maronpot, R. R., Johnson, G. A., Cofer, G. P., Mills, G. I., & Wheeler, C. T. (1991). Magnetic resonance microscopy of toxic renal injury induced by bromoethylamine in rats. Fundam Appl Toxicol, 16(4), 787–797. https://doi.org/10.1016/0272-0590(91)90164-y

Maki, J. H., Benveniste, H., MacFall, J. R., & Johnson, G. A. (1991). Maximization of contrast-to-noise ratio to distinguish diffusion and microcirculatory flow. J Magn Reson Imaging, 1(1), 39–46. https://doi.org/10.1002/jmri.1880010105

Maki, J. H., Benveniste, H., MacFall, J. R., Piantadosi, C. A., & Johnson, G. A. (1991). MR imaging of microcirculation in rat brain: correlation with carbon dioxide-induced changes in blood flow. J Magn Reson Imaging, 1(6), 673–681. https://doi.org/10.1002/jmri.1880010609

Malisch, T. W., Hedlund, L. W., Suddarth, S. A., & Johnson, G. A. (1991). MR microscopy at 7.0 T: effects of brain iron. J Magn Reson Imaging, 1(3), 301–305. https://doi.org/10.1002/jmri.1880010308

Veres, J. S., Johnson, G. A., & Kramer, P. J. (1991). In vivo Magnetic Resonance Imaging of Blechnum Ferns: Changes in T1 and N (H) During Dehydration and Rehydration. American Journal of Botany, 78(1), 80–80. https://doi.org/10.2307/2445231

MacFall, J. R., Maki, J. H., Johnson, G. A., Hedlund, L. W., & Cofer, G. P. (1991). Pre- and postmortem diffusion coefficients in rat neural and muscle tissues. Magnetic Resonance in Medicine, 20(1), 89–99. https://doi.org/10.1002/mrm.1910200110

Benveniste, H., Cofer, G. P., Piantadosi, C. A., Davis, J. N., & Johnson, G. A. (1991). Quantitative proton magnetic resonance imaging in focal cerebral ischemia in rat brain. Stroke, 22(2), 259–268. https://doi.org/10.1161/01.str.22.2.259

Chotas, H. G., Van Metter, R. L., Johnson, G. A., & Ravin, C. E. (1991). Small object contrast in AMBER and conventional chest radiography. Radiology, 180(3), 853–859. https://doi.org/10.1148/radiology.180.3.1871306

Maki, J. H., MacFall, J. R., & Johnson, G. A. (1991). The use of gradient flow compensation to separate diffusion and microcirculatory flow in MRI. Magn Reson Med, 17(1), 95–107. https://doi.org/10.1002/mrm.1910170114

Suddarth, S. A., & Johnson, G. A. (1991). Three-dimensional MR microscopy with large arrays. Magn Reson Med, 18(1), 132–141. https://doi.org/10.1002/mrm.1910180114