Optical tomographic scanning system for detection and monitoring

摘要

This optical tomography scanner for imaging (3D) applied density distribution as been evaluated for uniformity, resolution, and linearity. Signal to noise ratio of about 1000:1 in both line projection and in back projection reconstructed image has been obtained. Radiation-sensitive BANG$+R$/ polymer gels were studied using this system. Dose as low as 10 cGy up to 10 Gy for 6 MV X-ray and 6 MeV electrons from linear accelerator have been measured. Since the gels can be made UVlight sensitive, dose distribution could be used to measure exposure using this technique.