Browsing NTNU Open by Author "Austeng, Andreas"
Now showing items 1-6 of 6
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The Generalized Contrast-to-Noise Ratio: A Formal Definition for Lesion Detectability
Molares, Alfonso Rodrígues; Rindal, Ole Marius Hoel; D´Hooge, Jan; Måsøy, Svein-Erik; Austeng, Andreas; Bell, Muyinatu A. Lediju; Torp, Hans (Peer reviewed; Journal article, 2020)In the last 30 years, the contrast-to-noise ratio (CNR) has been used to estimate the contrast and lesion detectability in ultrasound images. Recent studies have shown that the CNR cannot be used with modern beamformers, ... -
Inner-Cycle Phases Can Be Estimated from a Single Inertial Sensor by Long Short-Term Memory Neural Network in Roller-Ski Skating
Meyer, Frederic; Lund-Hansen, Magne; Seeberg, Trine Margrethe; Kocbach, Jan; Sandbakk, Øyvind; Austeng, Andreas (Peer reviewed; Journal article, 2022)Objective: The aim of this study was to provide a new machine learning method to determine temporal events and inner-cycle parameters (e.g., cycle, pole and ski contact and swing time) in cross-country roller-ski skating ... -
The dark region artifact in adaptive ultrasound beamforming
Rindal, Ole Marius Hoel; Rodriguez-Molares, Alfonso; Austeng, Andreas (Journal article; Peer reviewed, 2017)An undesired effect, the dark region artifact (DRA), has been under-communicated in our research community. The DRA appear next to acoustically strong targets for some of the many adaptive beamformers introduced in the ... -
The influence of speckle statistics on contrast metrics in ultrasound imaging
Hverven, Stine Myhre; Rindal, Ole Marius Hoel; Rodriguez-Molares, Alfonso; Austeng, Andreas (Journal article; Peer reviewed, 2017)Adaptive beamformers aim for improved resolution and contrast in the ultrasound images, and their performance is typically benchmarked using metrics such as contrast ratio (CR) and contrast-to-noise ratio (CNR). Using ... -
The UltraSound ToolBox
Rodriguez-Molares, Alfonso; Rindal, Ole Marius Hoel; Bernard, Olivier; Nair, Arun; Bell, Muyinatu A. Lediju; Liebgott, Herve; Austeng, Andreas; Løvstakken, Lasse (Journal article; Peer reviewed, 2017)We present the UltraSound ToolBox (USTB), a processing framework for ultrasound signals. USTB aims to facilitate the comparison of imaging techniques and the dissemination of research results. It fills the void of tools ... -
Validation of temporal parameters within the skating sub-techniques when roller skiing on a treadmill, using inertial measurement units
Meyer, Frederic; Seeberg, Trine Margrethe; Kocbach, Jan; Danielsen, Jørgen; Sandbakk, Øyvind; Austeng, Andreas (Peer reviewed; Journal article, 2022)The aim of this study was to develop and validate a method using inertial measurements units (IMUs) to determine inner-cycle parameters (e.g., cycle, poles and skis contact, and swing time) and the main sub-techniques ...