Tai‐Kyong Song

HUMaN: Handheld Ultrasound System with Magnetic Needle Navigation

Sangbum Kye, Minsung Cho, Min Gyu Kim, Manuel Berrocal et autres

PURPOSE: Needle tip localization during ultrasound-guided procedures is challenging when the needle is poorly visualized. This study aimed to develop and evaluate a handheld ultrasound system with magnetic needle navigation (HUMaN) that integrates ultrasound imaging and real-time three-dimensional magnetic tracking within a …

kr, gb (code pays fourni par la source)

Optimization of Diverging-Wave Imaging in Ultrasound: Virtual Source Configuration and Synthetic Aperture Strategies

Jaebum Park, Doyoung Jang, Heechul Yoon, Tai‐Kyong Song

Diverging-wave imaging (DWI) is a promising ultrafast ultrasound technique that enables wide-field acquisition at very high frame rates. In this study, we present a unified analytical framework for DWI, focusing on two synthetic aperture reception strategies: diverging-wave synthetic aperture focusing (DW-SAF) and …

kr (code pays fourni par la source)

Investigation of ultrasound plane-wave imaging for optimal synthetic focusing

Doyoung Jang, Jaebum Park, Jae Hee Song, Tai‐Kyong Song et autres

Plane-wave imaging for ultrafast ultrasound, revolutionized by substantially enhancing frame rates, has paved the way for numerous applications in medical ultrasound. To improve spatial resolution and contrast, plane-wave compounding is typically utilized. Plane-wave compounding, referred to as plane-wave synthetic focusing (PW-SF) in …

kr, au (code pays fourni par la source)

3D real-time ultrasound/photoacoustic anatomical/functional imaging platform for hemodynamic response assessment: a feasibility study

Suyoung Choi, Sangwoo Nam, Nizar Guezzi, Myeongchan Kim et autres

The hemodynamic response is a critical physiological indicator for assessing cardiopulmonary function and monitoring therapeutic efficacy in various diseases. Photoacoustic imaging (PAI), which combines the strengths of ultrasound and optical imaging, has emerged as a prominent noninvasive, non-ionizing modality for monitoring and …

kr (code pays fourni par la source)

Spatio-Temporal Oriented Gradient (STOG) Filtering for Ultrasound Localization Microscopy: Preserving Slow and Fast Flow Components

Yutaek Seo, Zahra Hosseini, Kang Kim, Jungyul Park et autres

Ultrasound Localization Microscopy (ULM) enables super-resolution vascular imaging but depends heavily on clutter filtering. Conventional Singular Value Decomposition (SVD) struggles to distinguish slow microvascular flows from static tissue, often suppressing diagnostically important signals. We propose a Spatio-Temporal Oriented Gradient (STOG) filter that …

kr, us (code pays fourni par la source)

Axial Virtual Transmit Source Configuration for Optimized Diverging-Wave Imaging in Ultrasound

Jaebum Park, Doyoung Jang, Heechul Yoon, Tai‐Kyong Song

Diverging-wave (DW) ultrasound imaging is a promising technique that provides both wide imaging views and high frame rates. This study analytically and experimentally investigates two common imaging approaches: DW synthetic aperture focusing (DW-SAF) and DW synthetic focusing (DW-SF). A beam-pattern model was …

kr (code pays fourni par la source)

Learning-Based Design of Mismatched Filters via Unsupervised Deep Optimization for Coded Excitation Ultrasound

Nizar Guezzi, Dong-Kyu Jung, Hyojin Seong, Sangwoo Nam et autres

Coded excitation is widely used in ultrasound imaging to improve the signal-to-noise ratio (SNR), and, in particular, Barker-code-based pulse compression offers both high axial resolution and SNR gain. However, matched filtering yields elevated sidelobes that can degrade image quality, motivating the use …

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Design and Cellular Evaluation of an Ultrasound-based Theranostic Device for Diagnosis and Treatment of Osteoarthritis

Dong-Hun Han, Youngeun Choi, Sang-Goo Lee, Jaebum Park et autres

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Design and Evaluation of a Weighted Periodic Sparse Array for Low-Complexity 1-D Phased Array Ultrasound Imaging Systems

Doyoung Jang, Heechul Yoon, Gi-Duck Kim, Jae Hee Song et autres

A sparse array offers a significant reduction in the complexity of ultrasonic imaging systems by decreasing the number of active elements and associated electrical circuits needed to form a focused beam. Consequently, for 1-D arrays, it has been adopted in the development …

kr, au (code pays fourni par la source)

A Platinum-Protein hybrid nanostructure enables both targeted cancer theragnosis and platinum clearance

S.-H. Jeong, Young Wan Kwon, Ye-Won Lee, Tai‐Kyong Song et autres

kr (code pays fourni par la source)

An Adaptive Harmonic Separation Technique for Ultrasound Harmonic Imaging

Hansol Yoon, Tai‐Kyong Song

OBJECTIVE: An adaptive harmonic separation (HS) technique is proposed to overcome the limitations in conventional filtering techniques for ultrasound (US) tissue harmonic imaging (THI). METHODS: Based on expectation-maximization source separation, the proposed HS technique adaptively models the depth-varying fundamental and harmonic components …

kr (code pays fourni par la source)

Automated classification of liver fibrosis stages using ultrasound imaging

Hyun-Cheol Park, Yunsang Joo, O‐Joun Lee, Kunkyu Lee et autres

BACKGROUND: Ultrasound imaging is the most frequently performed for the patients with chronic hepatitis or liver cirrhosis. However, ultrasound imaging is highly operator dependent and interpretation of ultrasound images is subjective, thus well-trained radiologist is required for evaluation. Automated classification of liver …

kr (code pays fourni par la source)