Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A technique for determination of elements in human body in-vivo, utilizing nuclear resonant scattering of gamma rays has been developed. 847 keV photons emitted from a gaseous 56MnCl2 source are resonantly scattered from 56Fe present in the body. The detection of these gamma rays is used to estimate the iron content of the liver or heart of patients. Details of the calibration procedure and potential molecular effects are described.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A technique for the measurement of body iron stores utilizing nuclear resonant scattering of gamma-rays has been developed. 847keV photons emitted from a gaseous 56MnCl2 source are resonantly scattered from 56Fe present in the liver and are detected by two large volume Ge(Li) detectors. Due to the very narrow resonance of the absorption cross section the technique is very specific to the element under investigation. The spatial uniformity of activation, the sensitivity of the detection system and the limits of detection have been investigated. Measurements were made of liver of a man-like phantom. The sensitivity and the limit of detection obtained for the NRS technique developed in this study are adequate for detection of iron in livers of normal individuals and are certainly sufficient for livers of persons with iron overload.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Nuclear resonance scattering is applied in our laboratory to measure hepatic and cardiac iron overload. For iron analysis, a gaseous source of 4 mg MnCl2 is introduced into an evacuated quartz vial. Following irradiation in a nuclear reactor, 56Mn decays by beta emission to the 847-keV level of 56Fe, which subsequently decays to the ground state of 56Fe with a 7 ps half-life. The principal aim of this work is to evaluate the efficacy of the iron chelation therapy. Serial measurements over a time period of 6 to 12 months of a given patient will enable us to see how the iron is removed from the critical organs.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages :
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A series of technical developments and their clinical applications in various nuclear technologies at Brookhaven National Laboratory is described. These include the development of a portable neutron activation facility for measuring cadmium in vivo in kidney and liver, a technique for the measurement of body iron utilizing nuclear resonant scattering of gamma rays, a non-invasive measure of the skeletal levels of lead by an x-ray fluorescence technique, and the development of a pulsed Van de Graaff generator as a source of pulsed neutrons for the measurement of lung silicon. (ACR).
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Author: Dafydd ap Emrys Evans
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Author: Ksenofont Ilakovac