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      SIZING YOUR X-RAY VIEW 
      WINDOWS 
      GENERAL: LEAD GLASS 
      is used in medical in industrial applications so that the equipment 
      operator can view pthe part or patient without being exposed to radiation. 
      In most cases, the radiation attenuations of the glass must be at least 
      equal to the wall in which the window is located. It is also recommended 
      by the nuclear regulatory commission that a lead glass windows be at least 
      18" from the end of the operator control wall to insure the technician is 
      fully protected. 
      MATERIAL: LEAD ACRYLIC 
      is also available for all viewing 
      applications and should be considered for large windows and mobile 
      barriers to reduce breakage concerns. 
      HOW HIGH?
       
      Since all human eyes are 5" to 6" below the 
      top of the head, an upper height of 6'8" above the floor will accommodate 
      individuals '6'6" tall. 
      HOW LOW?  
      A bottom height of 36" AF should accommodate 
      all requirements. 
      STANDING *  
      A bottom height of 54" will 
      accommodate individuals 5'0" tall, therefore a windows 18" high will 
      handle personnel 5'0" to 6'6" tall. Examples of STANDING include Chest 
      Room, Radiographic, Tomographic and R.F. 
      SEATED / STANDING * 
      with equipment at desk height of 30", a lower window height of 36" should 
      be acceptable for nearly all persons. If consoles are located at the 
      counter height of 40", the view window bottom should be raised so wiring 
      is not seen from the exam room. Examples include C.T. Scan, Angiography, 
      Remote R/F, Cardiac Cath, Special Procedures etc. 
      HOW WIDE?  The view windows 
		should 
      not be wider than required for the operator and observers to comfortably 
      view the patient and equipment associated with the exam. The width will 
      vary with the type of exam room and the lateral area required to visualize 
      all associated equipment. 
      
      
      SPECIAL CONSIDERATIONS: 
      
        - 
        
Radiation 
        protective windows are available in lead glass and lead acrylic up to 48" 
        x 96" in size. Since there are no domestic manufacturers of these 
        products, it is most economical to order in standard stock sizes.  
        - 
        
To preclude 
        having to cut the window, it is good policy to oversize the frames by 
        1/8" to 1/4" or purchase the frames from the glass supplier to limit 
        division of responsibility with regard to fit of the glass to frame.  
        - 
        
extra wide 
        windows can be made up of frames to accommodate multiple panes. Be sure 
        that any mullion is also leaded.  
       
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