Title : 
High-Speed Rotating-Drum X-Ray Beam Choppers for Line-Scan Dual-Energy Medical Imaging
         
        
            Author : 
Zeman, H.D. ; Hughes, E.B. ; Otis, J.N. ; Brown, G.S. ; Thompson, A.C.
         
        
            Author_Institution : 
Hansen Laboratories of Physics and Department of Physics, Stanford University
         
        
        
        
        
        
        
            Abstract : 
Two 30 cm diameter steel drums with four facets rotating at 1800 RPM have produced high-quality digital-subtraction radiographs by alternately blocking and transmitting dual-energy synchrotron X-ray beams. An eight times faster system with 16.5 cm diameter tenfaceted tin-plated aluminum drums rotating at 5760 RPM is presently under construction.
         
        
            Keywords : 
Aluminum; Biomedical imaging; Choppers; Crystals; Laboratories; Physics; Steel; Structural beams; Synchrotron radiation; X-ray imaging;
         
        
        
            Journal_Title : 
Nuclear Science, IEEE Transactions on
         
        
        
        
        
            DOI : 
10.1109/TNS.1986.4337155