Towards direct reconstruction from a gamma camera based on Compton scattering
نویسندگان
چکیده
منابع مشابه
Towards direct reconstruction from a gamma camera based on Compton scattering
The Compton scattering camera (sometimes called the electronically collimated camera) has been shown by others to have the potential to better the photon counting statistics and the energy resolution of the Anger camera for imaging in SPECT. By using coincident detection of Compton scattering events on two detecting planes, a photon can be localized to having been sourced on the surface of a co...
متن کامل3D Image Reconstruction from Compton camera data
In this paper, we address analytically and numerically the inversion of the integral transform (cone or Compton transform) that maps a function on R to its integrals over conical surfaces. It arises in a variety of imaging techniques, e.g. in astronomy, optical imaging, and homeland security imaging, especially when the so called Compton cameras are involved. Several inversion formulas are deve...
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A new imaging principle for object reconstruction is proposed in Single Photon Emission Computer Tomography (SPECT) which is widely used in nuclear medicine. The quality of SPECT images is largely affected by many adverse factors among which chiefly Compton scattering of gamma rays. Recently we have proposed to exploit Compton scattered radiation to generate new data necessary for object recons...
متن کاملEffect of compensation for scattering angular uncertainty in analytical Compton camera reconstruction.
In Compton cameras, the measured scattering angle is associated with an uncertainty which becomes larger as the incident gamma-ray energy decreases. Since this uncertainty degrades the spatial resolution of reconstructed images, Hirasawa and Tomitani (2003 Phys. Med. Biol. 48 1009-26) previously revised their analytical reconstruction algorithm to compensate for it. As the new algorithm improve...
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This article investigates into the feasibility of using gamma radiation Compton backscatter spectra as a means of material characterization, with the view to developing a portable, hand held probe for investigative purposes such as searching for illicit substances hidden in wall or car door cavities.
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ژورنال
عنوان ژورنال: IEEE Transactions on Medical Imaging
سال: 1994
ISSN: 0278-0062
DOI: 10.1109/42.293932