Works (8)

Updated: October 16th, 2023 08:46

2023 journal article

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

BIOENGINEERING-BASEL, 10(9).

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

author keywords: multi-wavelength photoacoustic imaging; high-intensity focused ultrasound therapy; lesion segmentation; deep learning; machine learning; convolutional neural network
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)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: September 12, 2023

2021 journal article

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

IEEE Sensors Journal, 21(18), 19684–19696.

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
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)
UN Sustainable Development Goal Categories
Source: ORCID
Added: November 16, 2021

2021 journal article

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

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 68(8), 2749–2759.

author keywords: Annular; anodic bonding process; capacitive micromachined ultrasonic transducer (CMUT); glass substrate; spiral
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)
UN Sustainable Development Goal Categories
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. (2021, March). IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol. 68, pp. 767–776.

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
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)
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 26, 2021

2018 journal article

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

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 66(1), 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
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)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 18, 2019

2017 conference paper

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

Photons plus ultrasound: imaging and sensing 2017, 10064.

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

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)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

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

2016 38th annual international conference of the ieee engineering in medicine and biology society (embc), 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
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 Projection Algorithm and Frontend Integrated Circuit Architecture

2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), pp. 2623–2626.

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

author keywords: FUS; Neural stimulation; Noninvasiveness; FFT
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)
UN Sustainable Development Goal Categories
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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