Xun Wu

Works (8)

Updated: October 16th, 2023 08:46

2023 article

Deep-Learning-Based High-Intensity Focused Ultrasound Lesion Segmentation in Multi-Wavelength Photoacoustic Imaging

Wu, X., Sanders, J. L., Dundar, M. M., & Oralkan, Ö. (2023, September 8). Bioengineering, Vol. 10.

By: X. Wu n , J. Sanders n, M. Dundar * & Ö. Oralkan n 

author keywords: multi-wavelength photoacoustic imaging; high-intensity focused ultrasound therapy; lesion segmentation; deep learning; machine learning; convolutional neural network
topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Ultrasound and Hyperthermia Applications; Thermography and Photoacoustic Techniques
TL;DR: The feasibility and high performance of the deep-learning-based lesion segmentation method in MWPA imaging to monitor HIFU lesion formation and the potential to implement this method in real time are demonstrated. (via Semantic Scholar)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: September 12, 2023

2021 article

A Low-Power Wearable E-Nose System Based on a Capacitive Micromachined Ultrasonic Transducer (CMUT) Array for Indoor VOC Monitoring

Mahmud, M. M., Seok, C., Wu, X., Sennik, E., Biliroglu, A. O., Adelegan, O. J., … Oralkan, O. (2021, July 1). IEEE Sensors Journal, Vol. 21, pp. 19684–19696.

By: M. Mahmud  n, C. Seok  n, X. Wu n , E. Sennik  n, A. Biliroglu  n, O. Adelegan  n, I. Kim  n, J. Jur  n, F. Yamaner n , O. Oralkan n 

author keywords: Sensors; Sensor arrays; Chemical sensors; Sensitivity; Sensor systems; Monitoring; Resonators; Capacitive micromachined ultrasonic transducer (CMUT); multi-channel; e-nose; volatile organic compound (VOC); automated gas generation; wireless; sensitivity; selectivity; sensor resolution
topics (OpenAlex): Advanced Chemical Sensor Technologies; Gas Sensing Nanomaterials and Sensors; Analytical Chemistry and Sensors
TL;DR: A low-power wearable e-nose system based on a capacitive micromachined ultrasonic transducer (CMUT) array that can be used for identification of volatiles with suitable pattern-recognition techniques is presented. (via Semantic Scholar)
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Source: ORCID
Added: November 16, 2021

2021 article

Design and Fabrication of Wideband Air-Coupled Capacitive Micromachined Ultrasonic Transducers With Varying Width Annular-Ring and Spiral Cell Structures

Adelegan, O. J., Coutant, Z. A., Wu, X., Yamaner, F. Y., & Oralkan, O. (2021, April 27). IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 8, pp. 2749–2759.

By: O. Adelegan n, Z. Coutant n, X. Wu n , F. Yamaner n  & O. Oralkan n 

author keywords: Annular; anodic bonding process; capacitive micromachined ultrasonic transducer (CMUT); glass substrate; spiral
topics (OpenAlex): Advanced MEMS and NEMS Technologies; Advanced Sensor and Energy Harvesting Materials; Ultrasound Imaging and Elastography
TL;DR: A design strategy and fabrication process for developing improved concentric annular- and novel spiral-shaped capacitive micromachined ultrasonic transducers that can generate high output pressure and provide wide bandwidth in air are presented. (via Semantic Scholar)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 9, 2021

2020 article

A Row-Column (RC) Addressed 2-D Capacitive Micromachined Ultrasonic Transducer (CMUT) Array on a Glass Substrate

Sanders, J. L., Biliroglu, A. O., Wu, X., Adelegan, O. J., Yamaner, F. Y., & Oralkan, O. (2020, August 6). IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 68, pp. 767–776.

By: J. Sanders n, A. Biliroglu n, X. Wu n , O. Adelegan n, F. Yamaner n  & O. Oralkan n 

author keywords: Electrodes; Substrates; Imaging; Impedance measurement; Two dimensional displays; Glass; Acoustics; Capacitive micromachined ultrasonic transducer (CMUT); glass substrate; row-column (RC) array; ultrasound imaging
topics (OpenAlex): Ultrasound Imaging and Elastography; Ultrasound and Hyperthermia Applications; Ultrasonics and Acoustic Wave Propagation
TL;DR: A row-column capacitive micromachined ultrasonic transducer array fabricated using anodic bonding on a borosilicate glass substrate is presented to reduce the bottom electrode-to-substrate capacitive coupling and improves the relative response of the elements when top or bottom electrodes are used as the “signal” (active) electrode. (via Semantic Scholar)
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Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 26, 2021

2018 article

An FPGA-Based Backend System for Intravascular Photoacoustic and Ultrasound Imaging

Wu, X., Sanders, J. L., Zhang, X., Yamaner, F. Y., & Oralkan, O. (2018, November 14). IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 66, pp. 45–56.

By: X. Wu n , J. Sanders n, X. Zhang n, F. Yamaner n  & O. Oralkan n 

author keywords: Data acquisition; finite-state machine (FSM); field-programmable gate array (FPGA); photoacoustic (PA) imaging; software/hardware codesign; ultrasound (US) imaging; velocity measurement
MeSH headings : Algorithms; Equipment Design; Image Processing, Computer-Assisted / methods; Phantoms, Imaging; Photoacoustic Techniques / instrumentation; Photoacoustic Techniques / methods; Transducers; Ultrasonography, Interventional / instrumentation; Ultrasonography, Interventional / methods
topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Optical Imaging and Spectroscopy Techniques; Ultrasound Imaging and Elastography
TL;DR: A low-cost, compact, high-speed, and programmable imaging system based on a field-programmable gate array suitable for dual-mode forward-looking IVUS/IVPA imaging that provides a convenient backend platform for research and clinical IVPA and IVUS imaging. (via Semantic Scholar)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 18, 2019

2017 article

Multi-wavelength photoacoustic imaging for monitoring lesion formation during high-intensity focused ultrasound therapy

Wu, X., Sanders, J., Dundar, M., & Oralkan, Ö. (2017, March 3). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE, Vol. 10064.

By: X. Wu n , J. Sanders n, M. Dundar * & Ö. Oralkan n 

topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Thermography and Photoacoustic Techniques; Ultrasound and Hyperthermia Applications
TL;DR: A machine-learning-based method for lesion monitoring with multi-wavelength PAI (MWPAI), where PAI is repeated at a sequence of wavelengths and a stack of multi-Wavelength photoacoustic images is acquired, which shows that the lesions can be identified clearly. (via Semantic Scholar)
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Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 article

Photoacoustic-imaging-based temperature monitoring for high-intensity focused ultrasound therapy

Wu, X., Sanders, J. L., Stephens, D. N., & Oralkan, O. (2016, August 1). 2016 38th Annual International Conference of the Ieee Engineering in Medicine and Biology Society (Embc), pp. 3235–3238.

By: X. Wu n , J. Sanders n, D. Stephens * & O. Oralkan* 

MeSH headings : Animals; Cattle; High-Intensity Focused Ultrasound Ablation / methods; Imaging, Three-Dimensional; Photoacoustic Techniques / methods; Spectrum Analysis; Temperature
topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Ultrasound and Hyperthermia Applications; Nanoplatforms for cancer theranostics
TL;DR: A noninvasive approach for temperature measurement during HIFU therapy based on photoacoustic imaging (PAI) is demonstrated, which can be used to convert the PA image to a real-time temperature map. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 article

An ultrasound-based noninvasive neural interface to the retina

Wu, N. X., Kumar, M., & Oralkan, O. (2014, September 1). 2014 IEEE International Ultrasonics Symposium (IUS), pp. 2623–2626.

By: N. Wu n , M. Kumar n & O. Oralkan n 

author keywords: FUS; Neural stimulation; Noninvasiveness; FFT
topics (OpenAlex): Ultrasound and Hyperthermia Applications; Neuroscience and Neural Engineering; Ultrasound Imaging and Elastography
TL;DR: The algorithm and the frontend integrated circuit (IC) architecture design for an ultrasound-based noninvasive neural interface to the retina based on the fast Fourier transform (FFT) makes real-time implementation feasible. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

Employment

Updated: December 28th, 2022 05:07

2021 - present

Google LLC Mountain View, CA, US
Software Engineer

2019 - 2021

MathWorks (United States) Natick, Massachusetts, US
Software Engineer

2018 - 2018

Nvidia (United States) Durham, North Carolina, US
Software Engineer Intern

2017 - 2017

MathWorks (United States) Natick, Massachusetts, US
Software Developer Intern

Education

Updated: December 24th, 2018 14:41

2012 - 2019

North Carolina State University Raleigh, NC, US
Doctor of Philosophy Department of Electrical and Computer Engineering

2008 - 2012

Southeast University Nanjing, Jiangsu, CN
Bachelor of Science Department of Electrical and Computer Engineering

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