Physics – Medical Physics
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..475..678l&link_type=abstract
The fifteenth international conference on the application of accelerators in research and industry. AIP Conference Proceedings,
Physics
Medical Physics
X-Ray And Gamma-Ray Spectrometers, X-Ray, Mossbauer, And Other Gamma-Ray Spectroscopic Analysis Methods, Spectroscopic And Microscopic Techniques In Biophysics And Medical Physics
Scientific paper
Fast neutron analysis is a technique for determination of the elemental composition of materials in bulk by detecting the energies of characteristic gamma rays, which are emitted by elements after a neutron interaction. These gamma rays are typically in the 2 to 6 MeV range and it is desired to image them with a high efficiency system. Coded aperture imaging is a technique, which can improve system sensitivity by as much as a factor of fifty as compared to conventional collimators. Such systems have been used in x-ray astronomy, but unlike x-ray astronomy, our system is designed for near field imaging. The choice of pattern is critical to the performance of the system but we have devised patterns such that the reconstruction of point like objects is clean and rapid with no spurious response. We have also used the technique for imaging of high energy radioisotopes used in nuclear medicine.
Lanza Richard C.
Zhang Lianchang
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