Publications [#292767] of G. Allan Johnson

Papers Published

1. Johnson, GA; Ford, K; Heinz, R, Digital radiography using the quantex ds-20, Proceedings of SPIE the International Society for Optical Engineering, vol. 273 (July, 1981), pp. 114-119 [doi]
   (last updated on 2026/01/14)

   Abstract:
   The Quantex DS-20 digital image processor has been evaluated as a low cost alternative for digital vascular radiography. The processor is used in conjunction with a conventional remote radiographic/fluoroscopic system with no generator/processor interface required. (Use of a video-tape system reduces timing problems with minimal image degradation). Phantom studies indicate vessels as small as 1.5 mm can be seen with concentrations of contrast as low as 10 mgγ/ml. Animal studies show that subtraction images of diagnostic quality can be generated. © 1981 SPIE.