Results 11 to 20 of about 119,900 (352)

Effects of variability in manually contoured spinal cord masks on fMRI co-registration and interpretation

Frontiers in Neurology, 2022
Functional magnetic resonance imaging (fMRI) of the human spinal cord (SC) is a unique non-invasive method for characterizing neurovascular responses to stimuli.
Mark A. Hoggarth, Max C. Wang, Kimberly J. Hemmerling, Kimberly J. Hemmerling, Andrew D. Vigotsky, Andrew D. Vigotsky, Zachary A. Smith, Todd B. Parrish, Todd B. Parrish, Kenneth A. Weber, Molly G. Bright, Molly G. Bright   +11 more
doaj   +1 more source

Wider Contours and Adaptive Contours [PDF]

, 2019
Contour integrals in the complex plane are the basis of effective numerical methods for computing matrix functions, such as the matrix exponential and the Mittag-Leffler function. These methods provide successful ways to solve partial differential equations, such as convection--diffusion models.
MacNamara, Shev, McLean, William, Burrage, Kevin   +2 more
openaire   +2 more sources

Atlas-Based Shared-Boundary Deformable Multi-Surface Models through Multi-Material and Two-Manifold Dual Contouring

Information, 2023
This paper presents a multi-material dual “contouring” method used to convert a digital 3D voxel-based atlas of basal ganglia to a deformable discrete multi-surface model that supports surgical navigation for an intraoperative MRI-compatible surgical ...
Tanweer Rashid, Sharmin Sultana, Mallar Chakravarty, Michel Albert Audette   +3 more
doaj   +1 more source

Comparison of Manual and Semi-Automatic [18F]PSMA-1007 PET Based Contouring Techniques for Intraprostatic Tumor Delineation in Patients With Primary Prostate Cancer and Validation With Histopathology as Standard of Reference

Frontiers in Oncology, 2020
PurposeAccurate contouring of intraprostatic gross tumor volume (GTV) is pivotal for successful delivery of focal therapies and for biopsy guidance in patients with primary prostate cancer (PCa). Contouring of GTVs, using 18-Fluor labeled tracer prostate
Simon K. B. Spohn, Simon K. B. Spohn, Maria Kramer, Selina Kiefer, Peter Bronsert, August Sigle, Wolfgang Schultze-Seemann, Cordula A. Jilg, Tanja Sprave, Tanja Sprave, Lara Ceci, Thomas F. Fassbender, Nils H. Nicolay, Nils H. Nicolay, Juri Ruf, Anca L. Grosu, Anca L. Grosu, Constantinos Zamboglou, Constantinos Zamboglou, Constantinos Zamboglou   +19 more
doaj   +1 more source

Contouring with uncertainty [PDF]

, 2008
As stated by Johnson [Joh04], the visualization of uncertainty remains one of the major challenges for the visualization community. To achieve this, we need to understand and develop methods that allow us not only to consider uncertainty as an extra ...
Allendes Osorio, R.S., Brodlie, K.W.
core   +1 more source

Efficacy of one-step and multi-step polishing systems in finishing direct composite restoration: a non-randomised controlled experimental trial

Кубанский научный медицинский вестник, 2021
Background. The variety of polishing systems and tools available for finishing direct composite restorations may perplex the dentist.Objectives. An effect evaluation in one- and multi-step composite polishing tools using model specimens of GC Gradia ...
O. A. Pavlovich, I. A. Vykhristyuk, V. Yu. Buzko, V. V. Pavlovich   +3 more
doaj   +1 more source

Contour complexity and contour detection

Journal of Vision, 2015
Itis well-known that "smooth" chains of oriented elements-contours-are more easily detected amid background noise than more undulating (i.e., "less smooth") chains. Here, we develop a Bayesian framework for contour detection and show that it predicts that contour detection performance should decrease with the contour's complexity, quantified as the ...
John, Wilder, Jacob, Feldman, Manish, Singh   +2 more
openaire   +2 more sources

The Learning Curve and Inter-Observer Variability in Contouring the Hippocampus under the Hippocampal Sparing Guidelines of Radiation Therapy Oncology Group 0933

Current Oncology, 2022
Hippocampal-sparing brain radiotherapy (HS-BRT) in cancer patients results in preservation of neurocognitive function after brain RT which can contribute to patients’ quality of life (QoL).
Monika Konopka-Filippow, Ewa Sierko, Dominika Hempel, Rafał Maksim, Natalia Samołyk-Kogaczewska, Tomasz Filipowski, Ewa Rożkowska, Stefan Jelski, Beata Kasprowicz, Eryka Karbowska, Krzysztof Szymański, Kamil Szczecina   +11 more
doaj   +1 more source

Application of the Contouring Method to Extended Microlensed Sources [PDF]

, 1999
The method devised by Lewis et al. (1993) for calculating the light curve of a microlensed point source is expanded to two dimensions to enable the calculation of light curves of extended sources. This method is significantly faster than the ray shooting
Webster, R. L., Wyithe, J. S. B.
core   +2 more sources

Multipass Active Contours for an Adaptive Contour Map [PDF]

Sensors, 2013
Isocontour mapping is efficient for extracting meaningful information from a biomedical image in a topographic analysis. Isocontour extraction from real world medical images is difficult due to noise and other factors. As such, adaptive selection of contour generation parameters is needed.
Kim, Jeong, Park, Bo-Young, Akram, Farhan, Hong, Byung-Woo, Choi, Kwang   +4 more
openaire   +4 more sources