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Quantitative UltraSound (QUS) aims to reveal information about the tissue microstructure using backscattered echo signals from clinical scanners. Among different QUS parameters, scatterer number density is an important property that can…

Image and Video Processing · Electrical Eng. & Systems 2022-01-19 Ali K. Z. Tehrani , Ivan M. Rosado-Mendez , Hassan Rivaz

Simulation-based ultrasound training can be an essential educational tool. Realistic ultrasound image appearance with typical speckle texture can be modeled as convolution of a point spread function with point scatterers representing tissue…

Computer Vision and Pattern Recognition · Computer Science 2020-06-19 Lin Zhang , Valery Vishnevskiy , Orcun Goksel

Quantitative ultrasound (QUS) aims to find properties of scatterers which are related to the tissue microstructure. Among different QUS parameters, scatterer number density has been found to be a reliable biomarker for detecting different…

Signal Processing · Electrical Eng. & Systems 2023-02-28 Ali K. Z. Tehrani , Ivan M. Rosado-Mendez , Hayley Whitson , Hassan Rivaz

Quantitative Ultrasound (QUS) provides important information about the tissue properties. QUS parametric image can be formed by dividing the envelope data into small overlapping patches and computing different speckle statistics such as…

Image and Video Processing · Electrical Eng. & Systems 2022-06-10 Ali K. Z. Tehrani , Ivan M. Rosado-Mendez , Hassan Rivaz

Quantitative ultrasound (QUS) parameters such as the effective scatterer diameter (ESD) reveal tissue properties by analyzing ultrasound backscattered echo signal. ESD can be attained through parametrizing backscatter coefficient using form…

Signal Processing · Electrical Eng. & Systems 2021-09-22 Noushin Jafarpisheh , Ivan M. Rosado-Mendez , Timothy J. Hall , Hassan Rivaz

Quantitative ultrasound (QUS) analyzes the ultrasound backscattered data to find the properties of scatterers that correlate with the tissue microstructure. Statistics of the envelope of the backscattered radiofrequency (RF) data can be…

Signal Processing · Electrical Eng. & Systems 2024-01-23 Ali K. Z. Tehrani , Guy Cloutier , An Tang , Ivan M. Rosado-Mendez , Hassan Rivaz

Quantitative ultrasound (QUS) based parameters like the effective scatterer diameter (ESD) and mean scatterer spacing (MSS) are gaining attention recently as non-invasive biomarkers for soft tissue characterization. In this work, we propose…

Signal Processing · Electrical Eng. & Systems 2019-07-10 Navid Ibtehaj Nizam , Sharmin R. Ara , Md. Kamrul Hasan

Quantitative ultrasound (QUS) allows estimating the intrinsic tissue properties. Speckle statistics are the QUS parameters that describe the first order statistics of ultrasound (US) envelope data. The parameters of Homodyned K-distribution…

Signal Processing · Electrical Eng. & Systems 2022-11-02 Ali K. Z. Tehrani , Ivan M. Rosado-Mendez , Hassan Rivaz

Segmentation is one of the most significant steps in image processing. Segmenting an image is a technique that makes it possible to separate a digital image into various areas based on the different characteristics of pixels in the image.…

Image and Video Processing · Electrical Eng. & Systems 2024-11-20 Sina Derakhshandeh , Ali Mahloojifar

An important part of breast cancer staging is the assessment of the sentinel axillary node for early signs of tumor spreading. However, this assessment by pathologists is not always easy and retrospective surveys often requalify the status…

Quantitative Methods · Quantitative Biology 2024-04-30 Eric Bonnet

Early diagnosis of interstitial lung diseases is crucial for their treatment, but even experienced physicians find it difficult, as their clinical manifestations are similar. In order to assist with the diagnosis, computer-aided diagnosis…

Computer Vision and Pattern Recognition · Computer Science 2016-12-13 Stergios Christodoulidis , Marios Anthimopoulos , Lukas Ebner , Andreas Christe , Stavroula Mougiakakou

Scattering networks are a class of designed Convolutional Neural Networks (CNNs) with fixed weights. We argue they can serve as generic representations for modelling images. In particular, by working in scattering space, we achieve…

Ultrasound imaging is a commonly used technology for visualising patient anatomy in real-time during diagnostic and therapeutic procedures. High operator dependency and low reproducibility make ultrasound imaging and interpretation…

Deep Convolutional Neural Networks (CNN) provides an "end-to-end" solution for image pattern recognition with impressive performance in many areas of application including medical imaging. Most CNN models of high performance use…

Image and Video Processing · Electrical Eng. & Systems 2020-05-29 Mohammed Ahmed , Hongbo Du , Alaa AlZoubi

Object segmentation and structure localization are important steps in automated image analysis pipelines for microscopy images. We present a convolution neural network (CNN) based deep learning architecture for segmentation of objects in…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Shan E Ahmed Raza , Linda Cheung , Muhammad Shaban , Simon Graham , David Epstein , Stella Pelengaris , Michael Khan , Nasir M. Rajpoot

Deep Convolutional Neural Networks (CNNs) for image classification successively alternate convolutions and downsampling operations, such as pooling layers or strided convolutions, resulting in lower resolution features the deeper the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-29 Ioannis Vezakis , Antonios Vezakis , Sofia Gourtsoyianni , Vassilis Koutoulidis , George K. Matsopoulos , Dimitrios Koutsouris

Attenuation coefficient (AC) is a fundamental measure of tissue acoustical properties, which can be used in medical diagnostics. In this work, we investigate the feasibility of using convolutional neural networks (CNNs) to directly estimate…

Medical Physics · Physics 2022-05-20 Piotr Jarosik , Michal Byra , Marcin Lewandowski , Ziemowit Klimonda

We investigate the usefulness of quantitative ultrasound (QUS) and B-mode texture features for characterization of ulnar nerve fascicles. Ultrasound data were acquired from cadaveric specimens using a nominal 30 MHz probe. Next, the nerves…

Medical Physics · Physics 2019-03-19 Michal Byra , Lidi Wan , Jonathan Wong , Jiang Du , Sameer Shah , Michael Andre , Eric Chang

Scattering Transforms (or ScatterNets) introduced by Mallat are a promising start into creating a well-defined feature extractor to use for pattern recognition and image classification tasks. They are of particular interest due to their…

Computer Vision and Pattern Recognition · Computer Science 2017-09-06 Fergal Cotter , Nick Kingsbury

The importance of ultrasonic nondestructive testing has been increasing in recent years, and there are high expectations for the potential of laser ultrasonic visualization testing, which combines laser ultrasonic testing with scattered…

Computer Vision and Pattern Recognition · Computer Science 2023-05-31 Miya Nakajima , Takahiro Saitoh , Tsuyoshi Kato
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