Results 41 to 50 of about 6,108,061 (222)

Toward ground-truth optical coherence tomography via three-dimensional unsupervised deep learning processing and data [PDF]

arXiv, 2023
Optical coherence tomography (OCT) can perform non-invasive high-resolution three-dimensional (3D) imaging and has been widely used in biomedical fields, while it is inevitably affected by coherence speckle noise which degrades OCT imaging performance and restricts its applications.
arxiv  

Infarct prediction by intraoperative laser speckle imaging in patients with malignant hemispheric stroke

Journal of Cerebral Blood Flow and Metabolism, 2016
Currently, a reliable method for real-time prediction of ischemia in the human brain is not available. Here, we took a first step towards validating non-invasive intraoperative laser speckle imaging (iLSI) for prediction of infarction in 22 patients ...
Nils Hecht, M. Müller, N. Sandow, Alexandra Pinczolits, P. Vajkoczy, J. Woitzik   +5 more
semanticscholar   +1 more source

Evaluation of daily residual pancreatic tumor motion for deep‐inspiration breath‐hold radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Breath‐hold techniques are widely used in radiation therapy to minimize respiratory‐induced tumor or organ‐at‐risk motion. However, residual motion persists, necessitating a reliable daily evaluation method. Methods At our institution, fiducial markers serve as surrogates for target localization in pancreatic cancer treatment.
Weihua Mao, Binbin Wu, Kai Ding, Sarah Han‐Oh, Amol Narang   +4 more
wiley   +1 more source

A review of artificial intelligence in brachytherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Artificial intelligence (AI) has the potential to revolutionize brachytherapy's clinical workflow. This review comprehensively examines the application of AI, focusing on machine learning and deep learning, in various aspects of brachytherapy.
Jingchu Chen, Richard L. J. Qiu, Tonghe Wang, Shadab Momin, Xiaofeng Yang   +4 more
wiley   +1 more source

Definitions for a common standard for 2D speckle tracking echocardiography: consensus document of the EACVI/ASE/Industry Task Force to standardize deformation imaging.

Journal of the American Society of Echocardiography, 2015
Recognizing the critical need for standardization in strain imaging, in 2010, the European Association of Echocardiography (now the European Association of Cardiovascular Imaging, EACVI) and the American Society of Echocardiography (ASE) invited ...
J. Voigt, G. Pedrizzetti, P. Lysyansky, T. Marwick, H. Houle, Rolf Baumann, S. Pedri, Yasuhiro Ito, Yasuhiko Abe, S. Metz, J. Song, Jamie Hamilton, P. Sengupta, T. Kolias, J. D’hooge, G. Aurigemma, James D. Thomas, L. Badano   +17 more
semanticscholar   +2 more sources

Synthetic exposure: a simplified and accurate acquisition scheme for multiple exposure speckle imaging of blood flow [PDF]

arXiv, 2021
Speckle contrast imaging is an established technique to obtain relative blood maps over wide field of views. Currently, its most accurate implementation relies on the acquisition of raw speckle images at different exposure times but requires modulation of a laser pulse in duration and intensity and precise synchronization with camera.
arxiv  

Prediction of venous wound healing with laser speckle imaging

Phlebology, 2017
Introduction Laser speckle imaging is used for noninvasive assessment of blood flow of cutaneous wounds. The aim of this study was to assess if laser speckle imaging can be used as a predictor of venous ulcer healing.
T. V. van Vuuren, Carina van Zandvoort, S. Dogancı, I. Zwiers, A. J. tenCate-Hoek, R. Kurstjens, C. Wittens   +6 more
semanticscholar   +1 more source

A comparative analysis of deep learning architectures with data augmentation and multichannel input for locoregional breast cancer radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Studies on deep learning dose prediction increasingly focus on 3D models with multiple input channels and data augmentation, which increases the training time and thus also the environmental burden and hampers the ease of re‐training. Here we compare 2D and 3D U‐Net models with clinical accepted plans to evaluate the appropriateness of
Rosalie Klarenberg, Nienke L. M. Bakx, Coen W. Hurkmans   +2 more
wiley   +1 more source

Bessel Speckles [PDF]

arXiv, 2022
Speckle patterns are formed by random interferences of mutually coherent beams. While speckles are often considered as an unwanted noise in many areas, they also formed the foundation for the development of numerous speckle-based imaging, holography and sensing technologies.
arxiv  

Bone‐wise rigid registration of femur, tibia, and fibula for the tracking of temporal changes

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Multiple myeloma (MM) induces temporal alterations in bone structure, such as osteolytic bone lesions, which are challenging to identify through manual image interpretation. The large variation in radiologists' assessments, even at expert centers, further complicates diagnosis.
Arttu Ruohola, Ville Haapamäki, Eero Salli, Tuomas Kaseva, Marko Kangasniemi, Sauli Savolainen   +5 more
wiley   +1 more source