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| http://dx.doi.org/10.4103/0366-6999.158383 | DOI Listing |
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Assessment of choroidal vessels in healthy eyes using 3-dimensional vascular maps and a semi-automated deep learning approach.
Sci Rep
January 2025
Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
To assess the choroidal vessels in healthy eyes using a novel three-dimensional (3D) deep learning approach. In this cross-sectional retrospective study, swept-source OCT 6 × 6 mm scans on Plex Elite 9000 device were obtained. Automated segmentation of the choroidal layer was achieved using a deep-learning ResUNet model along with a volumetric smoothing approach.
View Article and Find Full Text PDFEvaluation of renal functional reserve with oral protein load or new ultrasound test.
J Nephrol
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Department of Medicine, Surgery and Neurosciences, Nephrology, Dialysis and Transplantation Unit, University Hospital of Siena, Siena, Italy.
Background: Renal functional reserve (RFR) measures the difference between the stimulated glomerular filtration rate (GFR) and the baseline GFR to detect early signs of renal functional decline. The protein load test (RFR-T) is the gold standard for RFR assessment but is a complicated procedure. Renal intraparenchymal resistance index (RRI) variation test (DRRI-T) is a non-invasive method to measure renal function reserve using ultrasound.
View Article and Find Full Text PDFPreliminary study of the upper limb with the use of ultrasound transmission imaging.
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From Rehabilitation Research and Development, Palo Alto Veterans Administration Medical Center and the Schools of Medicine and Engineering, Stanford University, Stanford, Calif.
A biologically safe, noninvasive method for visualizing bone and soft tissue relationships has been developed recently. Termed the ultrasonic transmission imaging system, its advantages include visualization of soft tissues in real time while motion is underway. The image can be correlated to standard x-ray films, but since no ionizing radiation is involved, repeated risk-free visualization of extremities for either diagnostic assessment or biomechanical studies is permitted.
View Article and Find Full Text PDFA pupillary image dataset: 10,000 annotated and 258,790 non-annotated images of patients with glaucoma, diabetes, and subjects influenced by alcohol, coupled with a segmentation performance evaluation.
Comput Biol Med
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Institute of Informatics, Federal University of Goiás, GO, Brazil.
The Pupillary Light Reflex (PLR) is the involuntary movement of the pupil adapting to lighting conditions. The measurement and qualification of this information have a broad impact in different fields. Thanks to technological advancements and algorithms, obtaining accurate and non-invasive records of pupillary movements is now possible, expanding practical applications.
View Article and Find Full Text PDFThe crescent sign on ocular ultrasound and correlation with elevated intracranial pressure: A prospective cohort study.
Am J Emerg Med
December 2024
Department of Neurology, University of Wisconsin-Madison, Madison, WI, USA. Electronic address:
Objectives: While lumbar puncture (LP) remains gold standard for assessing intracranial pressure (ICP), LP can be difficult to perform and lead to complications. Noninvasive correlations for elevated ICP via ocular ultrasound (OUS) have shown mixed results. The primary objective of this study is to identify the frequency and test characteristics of the crescent sign on OUS for elevated ICP.
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