David Thomas

Associate Professor


Curriculum vitae



720-848-0134


Department of Radiation Oncology

University of Colorado Anschutz Medical Campus

Department of Radiation Oncology – University of Colorado Denver | Anschutz Medical Campus
1665 Aurora Court, Suite 1032
Mail Stop F706
Aurora, CO 80045



Quantitative assessment of the microvascular blood flow.


The “quasi-stable” lipid shelled microbubble in response to consecutive ultrasound pulses. doi:10.1063/1.4746258
The “quasi-stable” lipid shelled microbubble in response to consecutive ultrasound pulses. doi:10.1063/1.4746258
The acoustic scatter from single biSphere microbubbles. DOI: 10.1016/j.ultrasmedbio.2010.07.002
The acoustic scatter from single biSphere microbubbles. DOI: 10.1016/j.ultrasmedbio.2010.07.002
Microvasculature perfusion has been shown to be an important biomarker for a number of disease states and their therapy. 

At the University of Edinburgh, we used a translational in-vivo animal model to develop new quantitative microvascular imaging tools, based on tracking of ultrasound contrast agents (microbubbles 1-10um in diameter) within capillaries. 

In an on-going collaboration with the Department of Experimental Echocardiography at Erasmus Medical Centre, Rotterdam, we designed ultra-high speed (~12MHz frame rates) optical experiments to measure the oscillations of microbubbles in near capillary sized tubes (~25μm). 

We developed numerical ordinary differential equation models of the radial oscillations of microbubbles with researchers at the University of Thessaly, Greece, and developed new methods to compare in-vitro and in-vivo experimental data using parameter estimation and signal analysis.

Publications


The effect of resonance on transient microbubble response; response; experimental and theoretical observations


DH Thomas, Mairead Butler, Padraig Looney, Nikos Pelekasis, Vassilis Sboros

Ultrasonics Symposium (IUS), 2012 IEEE International, IEEE, 2012, pp. 390--393


On the acoustic response of microbubbles in arteriole sized vessels


Mairead B Butler, D H Thomas, Nadia Silva, Stephen D Pye, Vassilis Sboros

Applied Physics Letters, vol. 99, AIP Publishing, 2011, p. 193702


The �quasi-stable� lipid shelled microbubble in response to consecutive ultrasound pulses


DH Thomas, M Butler, T Anderson, M Emmer, H Vos, M Borden, E Stride, N de Jong, V Sboros

Applied Physics Letters, vol. 101, AIP Publishing, 2012, p. 071601


Imaging of the ovine corpus luteum microcirculation with contrast ultrasound


Vassilis Sboros, M Averkiou, M Lampaskis, DH Thomas, N Silva, C Strouthos, J Docherty, AS McNeilly

Ultrasound in Medicine \& Biology, vol. 37, Elsevier, 2011, pp. 59--68


On the acoustic response of microbubbles in arteriole sized vessels


Mairead B Butler, D H Thomas, Nadia Silva, Stephen D Pye, Vassilis Sboros

Applied Physics Letters, vol. 99, AIP Publishing, 2011, p. 193702


The acoustic scatter from single bisphere microbubbles


DH Thomas, MB Butler, A Dermitzakis, T Anderson, WN McDicken, V Sboros

Ultrasound in medicine \& biology, vol. 36, Elsevier, 2010, pp. 1884--1892


The fate of resonant and off-resonant microbubble signals in response to consecutive imaging pulses


DH Thomas, P Looney, M Butler, T Anderson, N Pelekasis

Ultrasonics Symposium (IUS), 2010 IEEE, IEEE, 2010, pp. 1712--1715


Single microbubble response using pulse sequences: Initial results


David H Thomas, MB Butler, T Anderson, R Steel, SD Pye, M Poland, T Brock-Fisher, WN McDicken, V Sboros

Ultrasound in medicine \& biology, vol. 35, Elsevier, 2009, pp. 112--119


Acoustic Investigation of Attached, Single Microbubbles


Mairead B Butler, Ao Zhang, D H Thomas, Stephen D Pye, Norman McDicken, Carmel M Moran, Vassilis Sboros

Ultrasound in Medicine \& Biology, vol. 35, Elsevier, 2009, pp. S50


Acoustic detection of microbubble resonance


DH Thomas, P Looney, R Steel, N Pelekasis, WN McDicken, T Anderson, V Sboros

Applied Physics Letters, vol. 94, AIP Publishing, 2009, p. 243902


Optical observations of microbubble oscillation in small tubes


DH Thomas, Vassilis Sboros, Marcia Emmer, Hendrik J Vos, Nico de Jong

Ultrasonics Symposium (IUS), 2009 IEEE International, IEEE, 2009, pp. 2782--2784


Optical observations of microbubble oscillation in small tubes


DH Thomas, Vassilis Sboros, Marcia Emmer, Hendrik J Vos, Nico de Jong

Ultrasonics Symposium (IUS), 2009 IEEE International, IEEE, 2009, pp. 2782--2784


The acoustic response from individual attached and unattached rigid shelled microbubbles


Mairead B Butler, D H Thomas, Stephen D Pye, Carmel M Moran, W Norman McDicken, Vassilis Sboros

Applied Physics Letters, vol. 93, AIP Publishing, 2008, p. 223906


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