PMID: 9447668Jul 1, 1997Paper

A least-squares strain estimator for elastography

Ultrasonic Imaging
F Kallel, J Ophir

Abstract

A least-squares strain estimator (LSQSE) for elastography is proposed. It is shown that with such an estimator, the signal-to-noise ratio in an elastogram (SNRe) is significantly improved. This improvement is illustrated theoretically using a modified strain filter and experimentally using a homogeneous gel phantom. It is demonstrated that the LSQSE results in an increase of the elastographic sensitivity (smallest, strain that could be detected), thereby increasing the strain dynamic range. Using simulated data, it is shown that a tradeoff exists between the improvement in SNRe and the reduction of strain contrast and spatial resolution.

References

Apr 1, 1995·Ultrasonic Imaging·I CéspedesS Spratt
Jan 1, 1996·Ultrasound in Medicine & Biology·T VargheseI Céspedes
Apr 1, 1997·Ultrasonic Imaging·E E KonofagouT Varghese
Jan 1, 1996·IEEE Transactions on Medical Imaging·F Kallel, M Bertrand
Jan 1, 1997·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·T Varghese, J Ophir

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Citations

Jun 29, 2013·Ultrasonics·Mohammad Arafat HussainMd Kamrul Hasan
Dec 26, 2001·Ultrasound in Medicine & Biology·K M HiltawskyA Jensen
Dec 7, 2002·Ultrasound in Medicine & Biology·Naomi R MillerPaul M Meaney
Apr 23, 2003·Ultrasound in Medicine & Biology·Timothy J HallCandace S Spalding
May 20, 1998·Ultrasound in Medicine & Biology·F KallelT Krouskop
Jul 1, 1999·Ultrasound in Medicine & Biology·R J StaffordJ Ophir
Dec 2, 1998·Ultrasound in Medicine & Biology·F Kallel, J Ophir
Nov 26, 1999·Ultrasound in Medicine & Biology·R RighettiJ Ophir
Nov 26, 1999·Ultrasound in Medicine & Biology·E E KonofagouS K Alam
May 17, 2011·Proceedings of the National Academy of Sciences of the United States of America·Jean ProvostElisa E Konofagou
Dec 8, 2005·Physics in Medicine and Biology·Ernest L MadsenTimothy J Hall
Apr 1, 2010·Physics in Medicine and Biology·Jingfeng JiangTimothy J Hall
Jul 10, 2012·Physics in Medicine and Biology·Theo Z PavanTimothy J Hall
Oct 20, 2012·Physics in Medicine and Biology·M McCormickR J Dempsey
Jan 10, 2012·Physics in Medicine and Biology·M M Doyley
Aug 7, 2012·Interface Focus·Graham TreeceAndrew Gee
Aug 7, 2012·Interface Focus·Chris L de KorteAnton F W van der Steen
Apr 4, 2008·Medical Physics·Min RaoErnest L Madsen
Dec 17, 2010·Medical Physics·Hao Chen, Tomy Varghese
Dec 3, 2008·The Journal of the Acoustical Society of America·Min Rao, Tomy Varghese
Feb 22, 2007·AJR. American Journal of Roentgenology·Mireen Friedrich-RustChristoph Sarrazin
Sep 21, 2013·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Elizabeth MercureGuy Cloutier
Nov 19, 2013·Ultrasound in Medicine & Biology·Alexandre CostetElisa E Konofagou
Oct 16, 2012·Ultrasound in Medicine & Biology·Tim IdzengaChris L de Korte
Oct 4, 2011·Ultrasound in Medicine & Biology·Sanghamithra Korukonda, Marvin M Doyley
Sep 9, 2011·Ultrasonics·Jeffrey M AbeysekeraSeptimiu E Salcudean
Aug 31, 2010·Ultrasound in Medicine & Biology·Haiyan XuElizabeth S Burnside
Jul 14, 2010·Ultrasound in Medicine & Biology·Florence KremerJan D'hooge
Jun 1, 2010·Ultrasound in Medicine & Biology·Ted G FisherSteve Barnes
Feb 2, 2010·Ultrasound in Medicine & Biology·Guoliang YeJ Alison Noble
Oct 27, 2009·Ultrasound in Medicine & Biology·Richard G P LopataChris L de Korte

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