Ford, K. K., Heinz, E. R., Johnson, G. A., Drayer, B. D., & Dubois, P. J. (1982). Low-cost digital subtraction angiography. Ajnr Am J Neuroradiol, 3(4), 448–451. http://www.ajnr.org/content/3/4/448

Johnson, G. A. (1982). A Practical Approach to Quality Assurance in CT. American Journal of Roentgenology, 139(2), 427–427. https://scholars.duke.edu/display/pub655234

Johnson, G. A. (1982). Practical Approach to Quality Assurance in Computed Tomography. Proceedings of Spie the International Society for Optical Engineering, 347, 148–154. https://scholars.duke.edu/display/pub655165

Hedlund, L., Jones, D., Effmann, E., Johnson, G.A., Bates, W., Wolfe, W., & Putman, C. (1981). Computerized Tomographic Study of the Dog Lung During Hemorrhagic-Shock. Investigative Radiology, 14(5), 369–369. https://insights.ovid.com/crossref?an=00004424-198111000-00003

Hedlund, L. W., Jones, D. P., Effmann, E. L., Johnson, G. A., Bates, W. M., Beck, J. W., Wolfe, W., Putman, C. E. (1981). A computed tomographic study of the dog lung during hemorrhagic shock and after resuscitation. Invest Radiol, 16(6), 466–472. https://doi.org/10.1097/00004424-198111000-00003

Halvorsen, R. A., Woodfield, S., T., R., Allen, S. M., Hedlung, L. W., Johnson, G. A., & Thompson, W. M. (1981). An evaluation of contrast agents for CT of the hepatobiliary system. Investigative Radiology, 16(5), 387–387. https://doi.org/10.1097/00004424-198109000-00053

Johnson, G. A., Nelson, C. E., & OʼFoghludha, F. (1981). Imaging Limits in Digital Radiography. Investigative Radiology, 16(5), 377–377. https://doi.org/10.1097/00004424-198109000-00033

Korobkin, M., Johnson, G., & Breiman, R. (1981). Methodologic Considerations in Multiplanar Reformatting of Transaxial CT Images. Investigative Radiology, 16(5), 374–374. https://doi.org/10.1097/00004424-198109000-00027

Nelson, C. E., Johnson, G. A., & Bentel, G. (1981). Multi-Planar Reconsturction-Applications in Radiation Oncology Treatment Planning. Investigative Radiology, 16(5), 417–417. https://doi.org/10.1097/00004424-198109000-00113

Johnson, G. A., Korobkin, M., & Heinz, R. (1981). An Evaluation of Multiplanar Imaging Capabilities of 4 Current CT Scanners. American Journal of Roentgenology, 136(6), 1279–1279. https://doi.org/10.1117/12.931819