A simple method for evaluation of half-value layer variation in CT equipment

Physics in Medicine and Biology
Ana F Maia, Linda V E Caldas

Abstract

Tandem systems, each formed by a pencil ionization chamber with and without a specific covering, were developed and tested in standard radiation beams. These systems were designed to be used in computed tomography radiation beams, where the half-value layer (HVL) determination is not an easy task. The behaviour of the tandem systems in diagnostic radiology showed the possibility of their use to confirm HVL values previously determined by the conventional HVL measurement method in quality control programmes. These systems also have other advantages: low cost, easy application and quick measurement procedure.

References

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Feb 14, 1998·Radiographics : a Review Publication of the Radiological Society of North America, Inc·M H McKetty
Apr 4, 2003·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Alessandro M Costa, Linda V E Caldas
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Citations

Nov 13, 2014·Radiation Protection Dosimetry·Masanao KobayashiHiroshi Toyama
Jan 26, 2010·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Mércia L Oliveira, Ana F Maia
Apr 25, 2008·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Alessandro M CostaLinda V E Caldas
Jul 4, 2016·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Tomonobu HabaYoshinori Tsutsumi
Dec 14, 2016·Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging·Jeffrey A Meganck, Bob Liu
Dec 20, 2013·Physics in Medicine and Biology·Sarah E McKenneyJohn M Boone

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