Literature DB >> 16510965

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

Ana F Maia1, 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.

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Year:  2006        PMID： 16510965     DOI： 10.1088/0031-9155/51/6/016

Source DB:  PubMed          Journal:  Phys Med Biol        ISSN： 0031-9155            Impact factor:   3.609


  7 in total

1.  A method to generate equivalent energy spectra and filtration models based on measurement for multidetector CT Monte Carlo dosimetry simulations.

Authors:  Adam C Turner; Di Zhang; Hyun J Kim; John J DeMarco; Chris H Cagnon; Erin Angel; Dianna D Cody; Donna M Stevens; Andrew N Primak; Cynthia H McCollough; Michael F McNitt-Gray
Journal:  Med Phys       Date:  2009-06       Impact factor: 4.071

2.  Method for evaluating bow tie filter angle-dependent attenuation in CT: theory and simulation results.

Authors:  John M Boone
Journal:  Med Phys       Date:  2010-01       Impact factor: 4.071

3.  Experimental validation of a method characterizing bow tie filters in CT scanners using a real-time dose probe.

Authors:  Sarah E McKenney; Anita Nosratieh; Dale Gelskey; Kai Yang; Shin-Ying Huang; Lin Chen; John M Boone
Journal:  Med Phys       Date:  2011-03       Impact factor: 4.071

4.  Real-time dosimeter employed to evaluate the half-value layer in CT.

Authors:  Sarah E McKenney; J Anthony Seibert; George W Burkett; Dale Gelskey; Paul B Sunde; James D Newman; John M Boone
Journal:  Phys Med Biol       Date:  2013-12-19       Impact factor: 3.609

5.  Feasibility of the new copper pipe method for evaluating half-value layer in computed tomography: A measurement and Monte Carlo simulation study.

Authors:  Rena Okubo; Kosuke Matsubara; Thunyarat Chusin; Tomoya Hibino; Yusuke Ito
Journal:  J Appl Clin Med Phys       Date:  2019-11-25       Impact factor: 2.102

6.  Accuracy of measuring half- and quarter-value layers and appropriate aperture width of a convenient method using a lead-covered case in X-ray computed tomography.

Authors:  Kosuke Matsubara; Katsuhiro Ichikawa; Yuichi Murasaki; Ayaka Hirosawa; Kichiro Koshida
Journal:  J Appl Clin Med Phys       Date:  2014-01-06       Impact factor: 2.102

Review 7.  Dosimetry in Micro-computed Tomography: a Review of the Measurement Methods, Impacts, and Characterization of the Quantum GX Imaging System.

Authors:  Jeffrey A Meganck; Bob Liu
Journal:  Mol Imaging Biol       Date:  2017-08       Impact factor: 3.488
  7 in total

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