Application of Gamma Camera Imaging and SPECT Systems in Chemical Processes
Kantzas, A., Hamilton, K., Zarabi, T., Bhargava, A., Wright, I., Brook, G. and Chen, J.
1st World Congress on Industrial Process Tomography, Buxton, Greater Manchester, UK, April 14-17, 1999;
Chemical Engineering Journal, 77(1-2), April 2000, Pages 19-25.
SPECT imaging systems are used in nuclear medicine for diagnostic imaging of heart, brain, lung and other organ functions. Radio-pharmaceuticals are injected in the blood stream of a patient. The propagation of the radio-pharmaceutical is monitored as a function of position and time using a gamma camera. In many tests, the monitoring occurs in real time. This technique has been extended for use in chemical process monitoring in our laboratory. In particular, a Siemens gamma camera with SPECT capabilities is routinely used for real time tracer studies, radioactive particle tracking and SPECT imaging. The same radio-pharmaceuticals used in medical testing are used for process monitoring. The system has been used in determining hydrodynamic properties of gas/solid and liquid/solid fluidized beds and in visualizing and monitoring of multi-phase flow phenomena in porous media.