Dr. Xiaoyu Guo Profile

Dr. Xiaoyu Guo

at Johns Hopkins Univ

SPIE Involvement:

Author

Publications (21)

SPIE Journal Paper | 27 July 2017

Active phantoms: a paradigm for ultrasound calibration using phantom feedback

Alexis Cheng, Xiaoyu Guo, Haichong Zhang, Hyun Kang, Ralph Etienne-Cummings, Emad Boctor

JMI, Vol. 4, Issue 03, 035001, (July 2017) https://doi.org/10.1117/12.10.1117/1.JMI.4.3.035001

KEYWORDS: Calibration, Image segmentation, Transducers, Ultrasonography, Image quality, Robotics, Computer simulations, Imaging systems, Ferroelectric materials, Acoustics

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Proceedings Article | 5 May 2016 Paper

New platform for evaluating ultrasound-guided interventional technologies

Younsu Kim, Xiaoyu Guo, Emad Boctor

Proceedings Volume 9790, 97901J (2016) https://doi.org/10.1117/12.2217242

KEYWORDS: Ultrasonography, Optical tracking, Ferroelectric materials, Data modeling, 3D acquisition, Data acquisition, Field programmable gate arrays, Breast, Receivers, Signal detection

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Proceedings Article | 5 May 2016 Paper

Speed of sound estimation with active PZT element for thermal monitoring during ablation therapy: feasibility study

Younsu Kim, Xiaoyu Guo, Alexis Cheng, Emad Boctor

Proceedings Volume 9790, 97901K (2016) https://doi.org/10.1117/12.2217086

KEYWORDS: Ultrasonography, Ferroelectric materials, Tissues, Temperature metrology, Control systems, Computer simulations, Chemical elements, Error analysis, Tumors, Thermal effects

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SPIE Journal Paper | 8 April 2016 Open Access

Synthetic tracked aperture ultrasound imaging: design, simulation, and experimental evaluation

Haichong Zhang, Alexis Cheng, Nick Bottenus, Xiaoyu Guo, Gregg Trahey, Emad Boctor

JMI, Vol. 3, Issue 02, 027001, (April 2016) https://doi.org/10.1117/12.10.1117/1.JMI.3.2.027001

KEYWORDS: Ultrasonography, Image quality, Calibration, Error analysis, Transducers, Tissues, Image segmentation, Imaging systems, Robotics, Image resolution

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Proceedings Article | 15 March 2016 Paper

Photoacoustic image reconstruction from ultrasound post-beamformed B-mode image

Haichong Zhang, Xiaoyu Guo, Hyun Jae Kang, Emad Boctor

Proceedings Volume 9708, 970837 (2016) https://doi.org/10.1117/12.2213819

KEYWORDS: Image restoration, Ultrasonography, Image compression, Signal processing, Acoustics, Data acquisition, Reconstruction algorithms, Scanners, Data conversion, Image acquisition, Image processing, Convolution

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Proceedings Article | 20 July 2015 Paper

Co-robotic ultrasound tomography: dual arm setup and error analysis

Fereshteh Aalamifar, Haichong Zhang, Alexis Cheng, Xiaoyu Guo, Emad Boctor, Dengrong Jiang, Rishabh Khurana, Iulian Iordachita

Proceedings Volume 9419, 94190N (2015) https://doi.org/10.1117/12.2084529

KEYWORDS: Tomography, Calibration, Error analysis, Robotics, Reconstruction algorithms, Transmitters, Receivers, Imaging systems, Matrices, Human-machine interfaces

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Proceedings Article | 20 July 2015 Paper

Active point out-of-plane ultrasound calibration

Alexis Cheng, Xiaoyu Guo, Emad Boctor, Haichong Zhang, Ralph Etienne-Cummings, Hyunjae Kang

Proceedings Volume 9415, 94150W (2015) https://doi.org/10.1117/12.2081662

KEYWORDS: Calibration, Ultrasonography, Transducers, Error analysis, Image processing, Image-guided intervention, Robotics, Image segmentation, Surgery, Image acquisition

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Proceedings Article | 17 March 2015 Paper

Iterative motion compensation approach for ultrasonic thermal imaging

Gregory Hager, Xiaoyu Guo, Hyun Jae Kang, Emad Boctor, Ioana Fleming

Proceedings Volume 9419, 94190Z (2015) https://doi.org/10.1117/12.2081241

KEYWORDS: Tissues, Ultrasonography, Signal to noise ratio, Motion detection, Motion estimation, Temperature metrology, Thermography, Transducers, Pathology, Ultrasonics

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Proceedings Article | 13 March 2015 Paper

Needle visualization using photoacoustic effect

Hyun Jae Kang, Xiaoyu Guo, Alexis Cheng, Michael Choti, Emad Boctor

Proceedings Volume 9323, 93232Y (2015) https://doi.org/10.1117/12.2080161

KEYWORDS: Optical fibers, Visualization, Acoustics, Polonium, Optical tracking, Image visualization, Photoacoustic spectroscopy, Image processing, Data acquisition, Ultrasonography

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Proceedings Article | 11 March 2015 Paper

Multispectral photoacoustic decomposition with localized regularization for detecting targeted contrast agent

Behnoosh Tavakoli, Ying Chen, Xiaoyu Guo, Hyun Jae Kang, Martin Pomper, Emad Boctor

Proceedings Volume 9323, 932317 (2015) https://doi.org/10.1117/12.2080133

KEYWORDS: Dysprosium, Target detection, Photoacoustic spectroscopy, Absorption, Ultrasonography, Prostate cancer, Signal detection, Imaging systems, Cancer, Calibration

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Proceedings Article | 11 March 2015 Paper

Photoacoustic reconstruction using beamformed RF data: a synthetic aperture imaging approach

Haichong Zhang, Hyun Jae Kang, Xiaoyu Guo, Emad Boctor

Proceedings Volume 9323, 932319 (2015) https://doi.org/10.1117/12.2080633

KEYWORDS: Ultrasonography, Signal to noise ratio, Photoacoustic spectroscopy, Data acquisition, Acoustics, Transducers, Photoacoustic imaging, Synthetic aperture imaging, Reconstruction algorithms, Interference (communication)

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Proceedings Article | 4 March 2015 Paper

Direct ultrasound to video registration using photoacoustic markers from a single image pose

Alexis Cheng, Xiaoyu Guo, Jin Kang, Russell Taylor, Emad Boctor, Michael Choti, Hyun Jae Kang

Proceedings Volume 9313, 93130X (2015) https://doi.org/10.1117/12.2078590

KEYWORDS: Transducers, Wavefronts, Ultrasonography, Video, Image registration, Image segmentation, Photoacoustic spectroscopy, Navigation systems, 3D acquisition, Surgery

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SPIE Journal Paper | 2 March 2015 Open Access

Transurethral light delivery for prostate photoacoustic imaging

Muyinatu Lediju Bell, Xiaoyu Guo, Danny Song, Emad Boctor

JBO, Vol. 20, Issue 03, 036002, (March 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.3.036002

KEYWORDS: Prostate, Photoacoustic imaging, Photoacoustic spectroscopy, Visualization, Light sources, Phased arrays, Quartz, Monte Carlo methods, Prototyping, Tissues

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Proceedings Article | 20 March 2014 Paper

Software framework for spatially tracked pre-beamformed RF data with a freehand clinical ultrasound transducer

Hyun Jae Kang, Xiaoyu Guo, Reza Zahiri Azar, Alexis Cheng, Emad Boctor

Proceedings Volume 9040, 90401W (2014) https://doi.org/10.1117/12.2044226

KEYWORDS: Data acquisition, Software frameworks, Ultrasonography, Transducers, 3D acquisition, Image quality, Sensors, Calibration, 3D image processing, Medical imaging

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Proceedings Article | 12 March 2014 Paper

Optoacoustic sensing for target detection inside cylindrical catheters

Behnoosh Tavakoli, Xiaoyu Guo, Russell Taylor, Jin Kang, Emad Boctor

Proceedings Volume 9036, 90360G (2014) https://doi.org/10.1117/12.2043614

KEYWORDS: Signal detection, Target detection, Sensors, Optical fibers, Tissue optics, Absorption, 3D modeling, Signal generators, Acoustics, Submerged target detection

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Proceedings Article | 3 March 2014 Paper

Photoacoustic active ultrasound element for catheter tracking

Hyun-Jae Kang, Xiaoyu Guo, Behnoosh Tavakoli, Jin Kang, Ralph Etienne-Cummings, Emad Boctor

Proceedings Volume 8943, 89435M (2014) https://doi.org/10.1117/12.2041625

KEYWORDS: Ultrasonography, Chemical elements, Visualization, Imaging systems, Photoacoustic spectroscopy, Semiconductor lasers, Signal detection, Control systems, Safety, Optical components

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Proceedings Article | 3 March 2014 Paper

Photoacoustic imaging of prostate brachytherapy seeds with transurethral light delivery

Xiaoyu Guo, Danny Song, Muyinatu Lediju Bell, Emad Boctor

Proceedings Volume 8943, 89430N (2014) https://doi.org/10.1117/12.2040751

KEYWORDS: Prostate, Ultrasonography, Data acquisition, Photoacoustic spectroscopy, Photoacoustic imaging, Visualization, Tissue optics, Phased arrays, Spatial coherence, Mirrors

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Proceedings Article | 3 March 2014 Paper

Concurrent photoacoustic markers for direct three-dimensional ultrasound to video registration

Hyun-Jae Kang, Alexis Cheng, Xiaoyu Guo, Behnoosh Tavakoli, Jin Kang, Russell Taylor, Emad Boctor

Proceedings Volume 8943, 89435J (2014) https://doi.org/10.1117/12.2040321

KEYWORDS: Video, Navigation systems, Ultrasonography, Optical tracking, Kidney, Photoacoustic spectroscopy, Surgery, 3D acquisition, Sensors, Calibration

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Proceedings Article | 3 March 2014 Paper

Freehand spatial-angular compounding of photoacoustic images

Hyun-Jae Kang, Muyinatu Lediju Bell, Xiaoyu Guo, Russell Taylor, Emad Boctor

Proceedings Volume 8943, 894361 (2014) https://doi.org/10.1117/12.2040766

KEYWORDS: Ultrasonography, Signal to noise ratio, Image registration, Image resolution, Photoacoustic spectroscopy, Photoacoustic imaging, Image quality, Ions, Interference (communication), Acoustics

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Photoacoustic (PA) imaging is an emerging medical imaging modality that relies on the absorption of optical energy and the subsequent emission of acoustic waves that are detected with a conventional ultrasound probe. PA images are susceptible to background noise artifacts that reduce the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). We investigated spatial-angular compounding of PA images to enhance these image qualities. Spatial-angular compounding was implemented by averaging multiple PA images acquired as an ultrasound probe was rotated about the elevational axis with the laser beam and PA target fixed in the same location. An external tracking system was used to provide the position and orientation (i.e. pose) information of each PA image. Based on this pose information, frames in similar elevational planes were filtered from the acquired image data and compounded using one of two methods. One method registered overlapping signals between frames prior to compounding (using the pose information), while the second method omitted this spatial registration step. These two methods were applied to pre-beamformed RF, beamformed RF, and envelope-detected data, resulting in six different compounding pipelines. Compounded PA images with similar lateral resolution to a single reference image had factors of 1.1 - 1.6, 2.0 - 11.1, and 2.0 - 11.1 improvements in contrast, CNR, and SNR, respectively, when compared to the reference image. These improvements depended on the amount of relative motion between the reference image and the images that were compounded. The inclusion of spatial registration prior to compounding preserved lateral resolution and signal location when the relative rotations about the elevation axis were 3.5° or less for images that were within an elevational distance of 2.5 mm from the reference image, particularly when the method was applied to the enveloped-detected data. Results indicate that spatial-angular compounding has the potential to improve image quality for a variety of photoacoustic imaging applications.

Proceedings Article | 3 March 2014 Paper

Detecting occlusion inside a ventricular catheter using photoacoustic imaging through skull

Behnoosh Tavakoli, Xiaoyu Guo, Jin Kang, Russell Taylor, Emad Boctor

Proceedings Volume 8943, 89434O (2014) https://doi.org/10.1117/12.2040805

KEYWORDS: Skull, Signal detection, Ultrasonography, Brain, Bone, Photoacoustic spectroscopy, Tissues, Signal generators, Optical fibers, Acoustics

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Proceedings Article | 25 February 2012 Paper

Software framework of a real-time pre-beamformed RF data acquisition of an ultrasound research scanner

Danny Song, Hyun-Jae Kang, Emad Boctor, Xiaoyu Guo, Jin U. Kang, Nathanael Kuo

Proceedings Volume 8320, 83201F (2012) https://doi.org/10.1117/12.911551

KEYWORDS: Photoacoustic spectroscopy, Data acquisition, Ultrasonography, Photoacoustic imaging, Imaging systems, Software frameworks, Data communications, Data conversion, Laser systems engineering, Visualization

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Showing 5 of 21 publications

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