Brandon Helfield
Brandon Helfield
Department of Physics and Biology, Concordia University, Montreal, Canada
Verified email at concordia.ca
TitleCited byYear
In situ conversion of porphyrin microbubbles to nanoparticles for multimodality imaging
E Huynh, BYC Leung, BL Helfield, M Shakiba, JA Gandier, CS Jin, ...
Nature nanotechnology 10 (4), 325, 2015
1812015
Porphyrin Shell Microbubbles with Intrinsic Ultrasound and Pho-toacoustic Properties
E Huynh, JF Lovell, B Helfield, M Jeon, C Kim, DE Goertz, BC Wilson, ...
Journal of the American Chemical Society, 2012
1552012
Methylene blue microbubbles as a model dual-modality contrast agent for ultrasound and activatable photoacoustic imaging
M Jeon, W Song, E Huynh, J Kim, J Kim, BL Helfield, BYC Leung, ...
Journal of biomedical optics 19 (1), 016005, 2014
752014
Biophysical insight into mechanisms of sonoporation
B Helfield, X Chen, SC Watkins, FS Villanueva
Proceedings of the National Academy of Sciences 113 (36), 9983-9988, 2016
712016
Investigating the subharmonic response of individual phospholipid encapsulated microbubbles at high frequencies: A comparative study of five agents
BL Helfield, E Cherin, FS Foster, DE Goertz
Ultrasound in medicine & biology 38 (5), 846-863, 2012
552012
Nonlinear resonance behavior and linear shell estimates for Definity™ and MicroMarker™ assessed with acoustic microbubble spectroscopy
BL Helfield, DE Goertz
The Journal of the Acoustical Society of America 133 (2), 1158-1168, 2013
462013
The effect of preactivation vial temperature on the acoustic properties of DefinityTM
BL Helfield, X Huo, R Williams, DE Goertz
Ultrasound in medicine & biology 38 (7), 1298-1305, 2012
312012
The effect of boundary proximity on the response of individual ultrasound contrast agent microbubbles
BL Helfield, BYC Leung, DE Goertz
Physics in medicine and biology 59 (7), 1721, 2014
302014
Fluid viscosity affects the fragmentation and inertial cavitation threshold of lipid-encapsulated microbubbles
B Helfield, JJ Black, B Qin, J Pacella, X Chen, FS Villanueva
Ultrasound in medicine & biology 42 (3), 782-794, 2016
242016
The effect of binding on the subharmonic emissions from individual lipid-encapsulated microbubbles at transmit frequencies of 11 and 25 MHz
BL Helfield, E Cherin, FS Foster, DE Goertz
Ultrasound in medicine & biology 39 (2), 345-359, 2013
172013
Scaling of viscoelastic shell properties of lipid encapsulated microbubbles with frequency.
E Huo, B Helfield, D Goertz
The Journal of the Acoustical Society of America 128 (4), 2280-2280, 2010
122010
Individual lipid encapsulated microbubble radial oscillations: Effects of fluid viscosity
B Helfield, X Chen, B Qin, FS Villanueva
The Journal of the Acoustical Society of America 139 (1), 204-214, 2016
112016
Scaling of the viscoelastic shell properties of phospholipid encapsulated microbubbles with ultrasound frequency
BL Helfield, BYC Leung, X Huo, DE Goertz
Ultrasonics 54 (6), 1419-1424, 2014
92014
The influence of compliant boundary proximity on the fundamental and subharmonic emissions from individual microbubbles
BL Helfield, BYC Leung, DE Goertz
The Journal of the Acoustical Society of America 136 (1), EL40-EL46, 2014
82014
Mechanistic insight into sonoporation with ultrasound-stimulated polymer microbubbles
BL Helfield, X Chen, B Qin, SC Watkins, FS Villanueva
Ultrasound in medicine & biology 43 (11), 2678-2689, 2017
42017
A Review of Phospholipid Encapsulated Ultrasound Contrast Agent Microbubble Physics
B Helfield
Ultrasound in medicine & biology 45 (2), 282-300, 2019
32019
Subharmonic behavior of targeted and untargeted lipid encapsulated microbubbles at high ultrasound frequencies.
B Helfield, E Cherin, D Goertz
The Journal of the Acoustical Society of America 128 (4), 2442-2442, 2010
22010
Sonodynamic therapy using protoporphyrin IX encapsulated microbubbles inhibits tumor growth
X Chen, B Qin, D Whitehurst, B Helfield, L Lavery, FS Villanueva
2017 IEEE International Ultrasonics Symposium (IUS), 1-4, 2017
12017
The effect of boundary proximity on the fundamental and subharmonic emissions from individual microbubbles at higher frequencies
B Helfield, BY Leung, DE Goertz
Proceedings of Meetings on Acoustics ICA2013 19 (1), 075096, 2013
12013
Endothelial Cell Repair Biophysics During Ultrasound and Microbubble Sonoporation
B Helfield, X Chen, S Watkins, F Villanueva
Journal of the American Society of Echocardiography 31 (6), 2018
2018
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