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Proceedings Paper

Modeling and testing of a non-standard scanning device with dose reduction potential
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Paper Abstract

A non-standard scanning device with dose-reduction potential was proposed at the SPIE Medical Imaging conference 2006. The new device obtains the Radon data after the X-ray beam is collimated through a special mask. This mask is combined with a new geometry that permits an efficient data collection, thus the device has the potential of reducing the dose by a factor of two. In this work, we report a prototype of the new device and experimental data acquisition using only the mask of the new scanning geometry. In order to obtain the optimal parameters for the scanning device, several factors have been considered, including detector elements and shielding shape, fan beam angle, speed of the source rotation and materials employed. The calibration of the detector elements needs especial attention, due to the dependence of the detector response on the energy of the X-rays. A simplfied version of the device was designed and mounted. Phantom data were acquired using this prototype and were used to test the performance of the new design. The results obtained are highly promising, even though the prototype developed does not make use yet of all the potential features proposed in the theory.

Paper Details

Date Published: 28 March 2007
PDF: 11 pages
Proc. SPIE 6510, Medical Imaging 2007: Physics of Medical Imaging, 65103R (28 March 2007); doi: 10.1117/12.705803
Show Author Affiliations
Hugo de las Heras, GSF National Research Ctr. for Environment and Health (Germany)
Oleg Tischenko, GSF National Research Ctr. for Environment and Health (Germany)
Werner Panzer, GSF National Research Ctr. for Environment and Health (Germany)
Yuan Xu, Univ. of Oregon (United States)
Christoph Hoeschen, GSF National Research Ctr. for Environment and Health (Germany)

Published in SPIE Proceedings Vol. 6510:
Medical Imaging 2007: Physics of Medical Imaging
Jiang Hsieh; Michael J. Flynn, Editor(s)

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