G. Allan Johnson, Professor of Radiology and Physics  

G. Allan Johnson

Office Location: 141D Bryan Research Building for Neurobiology
Office Phone: (919) 684-7754, (919) 684-7755
Email Address: gjohnson@duke.edu
Web Page: http://www.civm.duhs.duke.edu/

Specialties:
Medical Imaging

Education:
PhD, Duke University, 1974
Ph.D., Duke University, 1974

Research Categories: Medical Physics

Research Description: I have spent the last thirty one years engaged in building and applying advanced imaging technologies ranging from work on the first CT scanner installed at Duke (1974) to installation of the world's first high filed (1.5 T) clinical MRI system (1983). I continue to serve the medical center in commissioning new imaging technologies. Since 1983 my research has focused on extending the resolution of magnetic resonance imaging from the clinical domain, typically with voxels of 1 x 1 x 1 mm to the microscopic domain required for basic research in small animal models with voxels 125,000X smaller. The Center for In Vivo Microscopy was founded in 1985 and continues today with generous support from the National Center for Research Resources (P41 RR005959). The Center currently supports 6 state-of-the-art imaging systems for small animal imaging: 3 MRI systems (2, 7, and 9.4 T), a micro x-ray system, a micro- CT system, and a microPET system. The Center has embarked on an aggressive program to expand these modalities into molecular imaging with support from NCI (R24 CA092656)

Areas of Interest:
magnetic resonance histology
magnetic resonance imaging
small animal imaging

Representative Publications   (More Publications)

  1. A Badea, GA Johnson, JL Jankowsky, Remote sites of structural atrophy predict later amyloid formation in a mouse model of Alzheimer's disease., NeuroImage, vol. 50 no. 2 (April, 2010), pp. 416-27 [doi]  [abs].
  2. CT Badea, LW Hedlund, J Cook, BR Berridge, GA Johnson, Micro-CT imaging assessment of dobutamine-induced cardiac stress in rats., Journal of pharmacological and toxicological methods (April, 2010) [doi]  [abs].
  3. CT Badea, SM Johnston, E Subashi, Y Qi, LW Hedlund, GA Johnson, Lung perfusion imaging in small animals using 4D micro-CT at heartbeat temporal resolution., Medical physics, vol. 37 no. 1 (January, 2010), pp. 54-62  [abs].
  4. FW Bazer, G Wu, TE Spencer, GA Johnson, RC Burghardt, K Bayless, Novel pathways for implantation and establishment and maintenance of pregnancy in mammals., Molecular human reproduction, vol. 16 no. 3 (March, 2010), pp. 135-52 [doi]  [abs].
  5. E Bucholz, K Ghaghada, Y Qi, S Mukundan, HA Rockman, GA Johnson, Cardiovascular phenotyping of the mouse heart using a 4D radial acquisition and liposomal Gd-DTPA-BMA., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, vol. 63 no. 4 (April, 2010), pp. 979-87 [doi]  [abs].
  6. KA Dunlap, HI Kwak, RC Burghardt, FW Bazer, RR Magness, GA Johnson, KJ Bayless, The sphingosine 1-phosphate (S1P) signaling pathway is regulated during pregnancy in sheep., Biology of reproduction, vol. 82 no. 5 (May, 2010), pp. 876-87 [doi]  [abs].
  7. GP Howles, Y Qi, GA Johnson, Ultrasonic disruption of the blood-brain barrier enables in vivo functional mapping of the mouse barrel field cortex with manganese-enhanced MRI., NeuroImage, vol. 50 no. 4 (May, 2010), pp. 1464-71 [doi]  [abs].
  8. Y Jiang, GA Johnson, Microscopic diffusion tensor imaging of the mouse brain., NeuroImage, vol. 50 no. 2 (April, 2010), pp. 465-71 [doi]  [abs].
  9. J Kim, DW Erikson, RC Burghardt, TE Spencer, G Wu, KJ Bayless, GA Johnson, FW Bazer, Secreted phosphoprotein 1 binds integrins to initiate multiple cell signaling pathways, including FRAP1/mTOR, to support attachment and force-generated migration of trophectoderm cells., Matrix biology : journal of the International Society for Matrix Biology (April, 2010) [doi]  [abs].
  10. X Li, FW Bazer, GA Johnson, RC Burghardt, DW Erikson, JW Frank, TE Spencer, I Shinzato, G Wu, Dietary Supplementation with 0.8% L-Arginine between Days 0 and 25 of Gestation Reduces Litter Size in Gilts., The Journal of nutrition (April, 2010) [doi]  [abs].
  11. DA Massuto, RN Hooper, EC Kneese, GA Johnson, NH Ing, BR Weeks, LA Jaeger, Intrauterine infusion of latency-associated peptide (LAP) during early porcine pregnancy affects conceptus elongation and placental size., Biology of reproduction, vol. 82 no. 3 (March, 2010), pp. 534-42 [doi]  [abs].
  12. DA Massuto, EC Kneese, GA Johnson, RC Burghardt, RN Hooper, NH Ing, LA Jaeger, Transforming growth factor beta (TGFB) signaling is activated during porcine implantation: proposed role for latency-associated peptide interactions with integrins at the conceptus-maternal interface., Reproduction (Cambridge, England), vol. 139 no. 2 (February, 2010), pp. 465-78 [doi]  [abs].
  13. NN Mistry, Y Qi, LW Hedlund, GA Johnson, Ventilation/perfusion imaging in a rat model of airway obstruction., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, vol. 63 no. 3 (March, 2010), pp. 728-35 [doi]  [abs].
  14. NN Mistry, A Thomas, SS Kaushik, GA Johnson, B Driehuys, Quantitative analysis of hyperpolarized 3He ventilation changes in mice challenged with methacholine., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, vol. 63 no. 3 (March, 2010), pp. 658-66 [doi]  [abs].
  15. A Petiet, GA Johnson, Active staining of mouse embryos for magnetic resonance microscopy., Methods in molecular biology (Clifton, N.J.), vol. 611 (2010), pp. 141-9 [doi]  [abs].
  16. MC Satterfield, H Gao, X Li, G Wu, GA Johnson, TE Spencer, FW Bazer, Select nutrients and their associated transporters are increased in the ovine uterus following early progesterone administration., Biology of reproduction, vol. 82 no. 1 (January, 2010), pp. 224-31 [doi]  [abs].
  17. G Song, DW Bailey, KA Dunlap, RC Burghardt, TE Spencer, FW Bazer, GA Johnson, Cathepsin B, cathepsin L, and cystatin C in the porcine uterus and placenta: potential roles in endometrial/placental remodeling and in fluid-phase transport of proteins secreted by uterine epithelia across placental areolae., Biology of reproduction, vol. 82 no. 5 (May, 2010), pp. 854-64 [doi]  [abs].
  18. A Badea, GA Johnson, RW Williams, Genetic dissection of the mouse CNS using magnetic resonance microscopy., Current opinion in neurology, England, vol. 22 no. 4 (August, 2009), pp. 379-86  [abs].
  19. A Badea, GA Johnson, RW Williams, Genetic dissection of the mouse brain using high-field magnetic resonance microscopy., NeuroImage, United States, vol. 45 no. 4 (May, 2009), pp. 1067-79  [abs].
  20. A Petiet, GA Johnson, Active Staining of Mouse Embryos for Magnetic Resonance Microscopy. In: Hewitson Tim D & Darby  Ian A (editors), Histology Protocols (Methods in Molecular Biology), Springer- Humana Press. Totowa, NJ. USA, in press, 2009 .
  21. A Banerjee, R Rose, GA Johnson, RC Burghardt, SK Ramaiah, The influence of estrogen on hepatobiliary osteopontin (SPP1) expression in a female rodent model of alcoholic steatohepatitis., Toxicologic pathology, vol. 37 no. 4 (2009), pp. 492-501 [doi]  [abs].
  22. FW Bazer, H Gao, GA Johnson, G Wu, DW Bailey, RC Burghardt, Select nutrients and glucose transporters in pig uteri and conceptuses., Society of Reproduction and Fertility supplement, vol. 66 (2009), pp. 335-6 .
  23. FW Bazer, TE Spencer, GA Johnson, RC Burghardt, G Wu, Comparative aspects of implantation., Reproduction (Cambridge, England), vol. 138 no. 2 (August, 2009), pp. 195-209 [doi]  [abs].
  24. FW Bazer, TE Spencer, GA Johnson, Interferons and uterine receptivity., Seminars in reproductive medicine, vol. 27 no. 1 (January, 2009), pp. 90-102 [doi]  [abs].
  25. RC Burghardt, JR Burghardt, JD Taylor 2nd, AT Reeder, BT Nguen, TE Spencer, KJ Bayless, GA Johnson, Enhanced focal adhesion assembly reflects increased mechanosensation and mechanotransduction at maternal-conceptus interface and uterine wall during ovine pregnancy., Reproduction (Cambridge, England), vol. 137 no. 3 (March, 2009), pp. 567-82 [doi]  [abs].
  26. DW Erikson, RC Burghardt, KJ Bayless, GA Johnson, Secreted phosphoprotein 1 (SPP1, osteopontin) binds to integrin alpha v beta 6 on porcine trophectoderm cells and integrin alpha v beta 3 on uterine luminal epithelial cells, and promotes trophectoderm cell adhesion and migration., Biology of reproduction, vol. 81 no. 5 (November, 2009), pp. 814-25 [doi]  [abs].
  27. H Gao, G Wu, TE Spencer, GA Johnson, FW Bazer, Select nutrients in the ovine uterine lumen. ii. glucose transporters in the uterus and peri-implantation conceptuses., Biology of reproduction, vol. 80 no. 1 (January, 2009), pp. 94-104 [doi]  [abs].
  28. H Gao, G Wu, TE Spencer, GA Johnson, FW Bazer, Select nutrients in the ovine uterine lumen. III. Cationic amino acid transporters in the ovine uterus and peri-implantation conceptuses., Biology of reproduction, vol. 80 no. 3 (March, 2009), pp. 602-9 [doi]  [abs].
  29. H Gao, G Wu, TE Spencer, GA Johnson, FW Bazer, Select nutrients in the ovine uterine lumen. IV. Expression of neutral and acidic amino acid transporters in ovine uteri and peri-implantation conceptuses., Biology of reproduction, vol. 80 no. 6 (June, 2009), pp. 1196-208 [doi]  [abs].
  30. H Gao, G Wu, TE Spencer, GA Johnson, FW Bazer, Select nutrients in the ovine uterine lumen. V. Nitric oxide synthase, GTP cyclohydrolase, and ornithine decarboxylase in ovine uteri and peri-implantation conceptuses., Biology of reproduction, vol. 81 no. 1 (July, 2009), pp. 67-76 [doi]  [abs].
  31. H Gao, G Wu, TE Spencer, GA Johnson, FW Bazer, Select nutrients in the ovine uterine lumen. VI. Expression of FK506-binding protein 12-rapamycin complex-associated protein 1 (FRAP1) and regulators and effectors of mTORC1 and mTORC2 complexes in ovine uteri and conceptuses., Biology of reproduction, vol. 81 no. 1 (July, 2009), pp. 87-100 [doi]  [abs].
  32. H Gao, G Wu, TE Spencer, GA Johnson, X Li, FW Bazer, Select nutrients in the ovine uterine lumen. I. Amino acids, glucose, and ions in uterine lumenal flushings of cyclic and pregnant ewes., Biology of reproduction, vol. 80 no. 1 (January, 2009), pp. 86-93 [doi]  [abs].
  33. AY Grahn, KS Bankiewicz, M Dugich-Djordjevic, JR Bringas, P Hadaczek, GA Johnson, S Eastman, M Luz, Non-PEGylated liposomes for convection-enhanced delivery of topotecan and gadodiamide in malignant glioma: initial experience., Journal of neuro-oncology, vol. 95 no. 2 (November, 2009), pp. 185-97 [doi]  [abs].
  34. K Hayashi, DW Erikson, SA Tilford, BM Bany, JA Maclean 2nd, EB Rucker 3rd, GA Johnson, TE Spencer, Wnt genes in the mouse uterus: potential regulation of implantation., Biology of reproduction, vol. 80 no. 5 (May, 2009), pp. 989-1000 [doi]  [abs].
  35. GP Howles, KB Ghaghada, Y Qi, S Mukundan Jr, GA Johnson, High-resolution magnetic resonance angiography in the mouse using a nanoparticle blood-pool contrast agent., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, vol. 62 no. 6 (December, 2009), pp. 1447-56 [doi]  [abs].
  36. GA Johnson, FW Bazer, RC Burghardt, TE Spencer, G Wu, KJ Bayless, Conceptus-uterus interactions in pigs: endometrial gene expression in response to estrogens and interferons from conceptuses., Society of Reproduction and Fertility supplement, vol. 66 (2009), pp. 321-32  [abs].
  37. GA Johnson, VR Gutti, SK Loyalka, KA O'Beirne 2nd, SK Cochran, HM Dale, GR Kracke, Albuterol metered dose inhaler performance under hyperbaric pressures., Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc, vol. 36 no. 1 (April, 2009), pp. 55-63  [abs].
  38. X Li, FW Bazer, H Gao, W Jobgen, GA Johnson, P Li, JR McKnight, MC Satterfield, TE Spencer, G Wu, Amino acids and gaseous signaling., Amino acids, vol. 37 no. 1 (May, 2009), pp. 65-78 [doi]  [abs].
  39. M Lin, CT Marshall, Y Qi, SM Johnston, CT Badea, CA Piantadosi, GA Johnson, Quantitative blood flow measurements in the small animal cardiopulmonary system using digital subtraction angiography., Medical physics, vol. 36 no. 11 (November, 2009), pp. 5347-58  [abs].
  40. RM Simmons, DW Erikson, J Kim, RC Burghardt, FW Bazer, GA Johnson, TE Spencer, Insulin-like growth factor binding protein-1 in the ruminant uterus: potential endometrial marker and regulator of conceptus elongation., Endocrinology, vol. 150 no. 9 (September, 2009), pp. 4295-305 [doi]  [abs].
  41. G Song, KA Dunlap, J Kim, DW Bailey, TE Spencer, RC Burghardt, GF Wagner, GA Johnson, FW Bazer, Stanniocalcin 1 is a luminal epithelial marker for implantation in pigs regulated by progesterone and estradiol., Endocrinology, vol. 150 no. 2 (February, 2009), pp. 936-45 [doi]  [abs].
  42. X Zhang, CT Badea, GA Johnson, Three-dimensional reconstruction in free-space whole-body fluorescence tomography of mice using optically reconstructed surface and atlas anatomy., Journal of biomedical optics, vol. 14 no. 6 (March, 2010), pp. 064010 [doi]  [abs].
  43. FW Bazer, RC Burghardt, GA Johnson, TE Spencer, G Wu, Interferons and progesterone for establishment and maintenance of pregnancy: interactions among novel cell signaling pathways., Reproductive biology, vol. 8 no. 3 (November, 2008), pp. 179-211  [abs].
  44. PS Bridger, S Haupt, R Leiser, GA Johnson, RC Burghardt, HR Tinneberg, C Pfarrer, Integrin activation in bovine placentomes and in caruncular epithelial cells isolated from pregnant cows., Biology of reproduction, vol. 79 no. 2 (August, 2008), pp. 274-82 [doi]  [abs].
  45. KA Dunlap, DW Erikson, RC Burghardt, FJ White, KM Reed, JL Farmer, TE Spencer, RR Magness, FW Bazer, KJ Bayless, GA Johnson, Progesterone and placentation increase secreted phosphoprotein one (SPP1 or osteopontin) in uterine glands and stroma for histotrophic and hematotrophic support of ovine pregnancy., Biology of reproduction, vol. 79 no. 5 (November, 2008), pp. 983-90 [doi]  [abs].
  46. MM Joyce, JR Burghardt, RC Burghardt, RN Hooper, FW Bazer, GA Johnson, Uterine MHC class I molecules and beta 2-microglobulin are regulated by progesterone and conceptus interferons during pig pregnancy., Journal of immunology (Baltimore, Md. : 1950), vol. 181 no. 4 (August, 2008), pp. 2494-505  [abs].
  47. J Kim, G Song, H Gao, JL Farmer, MC Satterfield, RC Burghardt, G Wu, GA Johnson, TE Spencer, FW Bazer, Insulin-like growth factor II activates phosphatidylinositol 3-kinase-protooncogenic protein kinase 1 and mitogen-activated protein kinase cell Signaling pathways, and stimulates migration of ovine trophectoderm cells., Endocrinology, vol. 149 no. 6 (June, 2008), pp. 3085-94 [doi]  [abs].
  48. JD Tobias, GA Johnson, S Rehman, R Fisher, N Caron, Cerebral oxygenation monitoring using near infrared spectroscopy during one-lung ventilation in adults., Journal of minimal access surgery, vol. 4 no. 4 (October, 2008), pp. 104-107  [abs].
  49. G Wu, FW Bazer, S Datta, GA Johnson, P Li, MC Satterfield, TE Spencer, Proline metabolism in the conceptus: implications for fetal growth and development., Amino acids, vol. 35 no. 4 (November, 2008), pp. 691-702 [doi]  [abs].
  50. AA Ali, AM Dale, A Badea, GA Johnson, Automated segmentation of neuroanatomical structures in multispectral MR microscopy of the mouse brain., NeuroImage, United States, vol. 27 no. 2 (August, 2005), pp. 425-35  [abs].
  51. M Cyr, MG Caron, GA Johnson, A Laakso, Magnetic resonance imaging at microscopic resolution reveals subtle morphological changes in a mouse model of dopaminergic hyperfunction., NeuroImage, United States, vol. 26 no. 1 (May, 2005), pp. 83-90  [abs].
  52. W Maï, CT Badea, CT Wheeler, LW Hedlund, GA Johnson, Effects of breathing and cardiac motion on spatial resolution in the microscopic imaging of rodents., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 53 no. 4 (April, 2005), pp. 858-65  [abs].
  53. BT Chen, AT Yordanov, GA Johnson, Ventilation-synchronous magnetic resonance microscopy of pulmonary structure and ventilation in mice., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 53 no. 1 (January, 2005), pp. 69-75  [abs].
  54. C Badea, LW Hedlund, GA Johnson, Micro-CT with respiratory and cardiac gating., Medical physics, United States, vol. 31 no. 12 (December, 2004), pp. 3324-9  [abs].
  55. BT Chen, GA Johnson, Dynamic lung morphology of methacholine-induced heterogeneous bronchoconstriction., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 52 no. 5 (November, 2004), pp. 1080-6  [abs].
  56. AC Brau, LW Hedlund, GA Johnson, Cine magnetic resonance microscopy of the rat heart using cardiorespiratory-synchronous projection reconstruction., Journal of magnetic resonance imaging : JMRI, United States, vol. 20 no. 1 (July, 2004), pp. 31-8  [abs].
  57. X Zhang, M Tengowski, L Fasulo, S Botts, SA Suddarth, GA Johnson, Measurement of fat/water ratios in rat liver using 3D three-point dixon MRI., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 51 no. 4 (April, 2004), pp. 697-702  [abs].
  58. TM Yelbuz, X Zhang, MA Choma, HA Stadt, M Zdanowicz, GA Johnson, ML Kirby, Images in cardiovascular medicine. Approaching cardiac development in three dimensions by magnetic resonance microscopy., Circulation, United States, vol. 108 no. 22 (December, 2003), pp. e154-5 .
  59. X Zhang, TM Yelbuz, GP Cofer, MA Choma, ML Kirby, GA Johnson, Improved preparation of chick embryonic samples for magnetic resonance microscopy., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 49 no. 6 (June, 2003), pp. 1192-5  [abs].
  60. BT Chen, AC Brau, GA Johnson, Measurement of regional lung function in rats using hyperpolarized 3helium dynamic MRI., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 49 no. 1 (January, 2003), pp. 78-88  [abs].
  61. GA Johnson, GP Cofer, B Fubara, SL Gewalt, LW Hedlund, RR Maronpot, Magnetic resonance histology for morphologic phenotyping., Journal of magnetic resonance imaging : JMRI, United States, vol. 16 no. 4 (October, 2002), pp. 423-9  [abs].
  62. GA Johnson, GP Cofer, SL Gewalt, LW Hedlund, Morphologic phenotyping with MR microscopy: the visible mouse., Radiology, United States, vol. 222 no. 3 (March, 2002), pp. 789-93  [abs].
  63. AC Brau, CT Wheeler, LW Hedlund, GA Johnson, Fiber-optic stethoscope: a cardiac monitoring and gating system for magnetic resonance microscopy., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 47 no. 2 (February, 2002), pp. 314-21  [abs].
  64. LW Hedlund, GA Johnson, Mechanical ventilation for imaging the small animal lung., ILAR journal / National Research Council, Institute of Laboratory Animal Resources, United States, vol. 43 no. 3 (2002), pp. 159-74  [abs].
  65. HE Möller, LW Hedlund, XJ Chen, MR Carey, MS Chawla, CT Wheeler, GA Johnson, Measurements of hyperpolarized gas properties in the lung. Part III: (3)He T(1)., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 45 no. 3 (March, 2001), pp. 421-30  [abs].
  66. GA Johnson, GP Cofer, LW Hedlund, RR Maronpot, SA Suddarth, Registered (1)H and (3)He magnetic resonance microscopy of the lung., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, United States, vol. 45 no. 3 (March, 2001), pp. 365-70  [abs].
  67. H Benveniste, K Kim, L Zhang, GA Johnson, Magnetic resonance microscopy of the C57BL mouse brain., NeuroImage, UNITED STATES, vol. 11 no. 6 Pt 1 (June, 2000), pp. 601-11  [abs].
  68. H Benveniste, G Einstein, KR Kim, C Hulette, GA Johnson, Detection of neuritic plaques in Alzheimer's disease by magnetic resonance microscopy., Proceedings of the National Academy of Sciences of the United States of America, UNITED STATES, vol. 96 no. 24 (November, 1999), pp. 14079-84  [abs].
  69. XJ Chen, HE Möller, MS Chawla, GP Cofer, B Driehuys, LW Hedlund, GA Johnson, Spatially resolved measurements of hyperpolarized gas properties in the lung in vivo. Part I: diffusion coefficient., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, UNITED STATES, vol. 42 no. 4 (October, 1999), pp. 721-8  [abs].
  70. XJ Chen, HE Möller, MS Chawla, GP Cofer, B Driehuys, LW Hedlund, JR MacFall, GA Johnson, Spatially resolved measurements of hyperpolarized gas properties in the lung in vivo. Part II: T *(2)., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, UNITED STATES, vol. 42 no. 4 (October, 1999), pp. 729-37  [abs].
  71. SE Hurlston, WW Brey, SA Suddarth, GA Johnson, A high-temperature superconducting Helmholtz probe for microscopy at 9.4 T., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, UNITED STATES, vol. 41 no. 5 (May, 1999), pp. 1032-8  [abs].
  72. M Viallon, GP Cofer, SA Suddarth, HE Möller, XJ Chen, MS Chawla, LW Hedlund, Y Crémillieux, GA Johnson, Functional MR microscopy of the lung using hyperpolarized 3He., Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine, UNITED STATES, vol. 41 no. 4 (April, 1999), pp. 787-92  [abs].
  73. RR Maronpot, RC Sills, GA Johnson, Applications of magnetic resonance microscopy., Toxicologic pathology, United States, vol. 32 Suppl 2 , pp. 42-8  [abs].
  74. RC Sills, DL Morgan, DW Herr, PB Little, NM George, TV Ton, NE Love, RR Maronpot, GA Johnson, Contribution of magnetic resonance microscopy in the 12-week neurotoxicity evaluation of carbonyl sulfide in Fischer 344 rats., Toxicologic pathology, United States, vol. 32 no. 5 , pp. 501-10  [abs].
  75. H Benveniste, H Qui, LW Hedlund, F D'Ercole, GA Johnson, Spinal cord neural anatomy in rats examined by in vivo magnetic resonance microscopy., Regional anesthesia and pain medicine, UNITED STATES, vol. 23 no. 6 , pp. 589-99  [abs].