A fast, angle-dependent, analytical model of CsI detector response for optimization of 3D x-ray breast imaging systems.

Medical Physics
Melanie FreedAldo Badano

Abstract

Accurate models of detector blur are crucial for performing meaningful optimizations of three-dimensional (3D) x-ray breast imaging systems as well as for developing reconstruction algorithms that faithfully reproduce the imaged object anatomy. So far, x-ray detector blur has either been ignored or modeled as a shift-invariant symmetric function for these applications. The recent development of a Monte Carlo simulation package called MANTIS has allowed detailed modeling of these detector blur functions and demonstrated the magnitude of the anisotropy for both tomosynthesis and breast CT imaging systems. Despite the detailed results that MANTIS produces, the long simulation times required make inclusion of these results impractical in rigorous optimization and reconstruction algorithms. As a result, there is a need for detector blur models that can be rapidly generated. In this study, the authors have derived an analytical model for deterministic detector blur functions, referred to here as point response functions (PRFs), of columnar CsI phosphor screens. The analytical model is x-ray energy and incidence angle dependent and draws on results from MANTIS to indirectly include complicated interactions that are not explicitly incl...Continue Reading

References

Oct 19, 2004·Medical Physics·Tao WuDaniel B Kopans
Dec 14, 2004·Medical Physics·Brandon D GallasKyle J Myers
Mar 3, 2006·Physics in Medicine and Biology·Aldo Badano, Josep Sempau
Sep 14, 2006·Medical Physics·Aldo BadanoJosep Sempau
Oct 7, 2006·Medical Physics·James G MainprizeMartin J Yaffe
Dec 14, 2007·Medical Physics·Aldo BadanoJosep Sempau
Apr 4, 2008·Medical Physics·Samuel Richard, Jeffrey H Siewerdsen
Aug 30, 2008·Physics in Medicine and Biology·G K YadavaD R Bednarek
Mar 11, 2009·IEEE Transactions on Medical Imaging·Aldo BadanoJosep Sempau

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Citations

Dec 11, 2013·Medical Physics·Raymond J Acciavatti, Andrew D A Maidment
Jan 10, 2013·Medical Physics·Ioannis Sechopoulos
Dec 13, 2012·Medical Physics·Raymond J Acciavatti, Andrew D A Maidment
Aug 10, 2013·Medical Physics·Andrey Makeev, Stephen J Glick
Nov 26, 2015·Radiology·Srinivasan VedanthamDaniel B Kopans
Nov 22, 2017·Medical Physics·Karl BerggrenErik Fredenberg
Nov 30, 2018·Medical Physics·Raymond J Acciavatti, Andrew D A Maidment
Nov 11, 2011·Analytical Chemistry·Kouichi TsujiChul-Un Ro

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