Accession Number : ADD019890


Title :   Dual Energy X-Ray Densitometry Apparatus and Method Using Single X-Ray Pulse


Descriptive Note : Patent application, filed 13 Oct 1999


Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC


Personal Author(s) : Holland, Glenn E ; Seely, John F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/d019890.pdf


Report Date : 13 Oct 1999


Pagination or Media Count : 27


Abstract : A dual-energy x-ray system is provided which is useful in densitometry and other applications. A dual energy x-ray source, formed field emission x-ray tube driven by a Marx generator, produces a single x-ray pulse of a very short duration (e.g., 10 to 200 nanoseconds). The pulse provides x-ray energy of a first, high value early in the pulse and x-ray energy of a second, lower value later in the pulse so as to provide a dual energy level x-ray distribution comprising hard and soft x-rays. A detector system having dual x-ray energy discrimination properties, formed by soft and hard x-ray detectors and an inter-detector, receives the x-ray pulse and discriminates between the dual x-ray energy levels of the pulse.


Descriptors :   *PATENT APPLICATIONS , *X RAYS , *MEDICAL EQUIPMENT , MEASUREMENT , PULSE GENERATORS , SOFT X RAYS , BONES , FIELD EMISSION TUBES , DENSITOMETERS , HARD X RAYS


Subject Categories : Medicine and Medical Research
      Nuclear Physics & Elementary Particle Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE