Results 131 to 140 of about 301,214 (427)

A Flexible Bandwidth Reservation Framework for Bulk Data Transfers in Grid Networks [PDF]

arXiv, 2006
In grid networks, distributed resources are interconnected by wide area network to support compute and data-intensive applications, which require reliable and efficient transfer of gigabits (even terabits) of data. Different from best-effort traffic in Internet, bulk data transfer in grid requires bandwidth reservation as a fundamental service ...
arxiv  

Feasibility and Validity of Computed Tomography-Derived Fractional Flow Reserve in Patients With Severe Aortic Stenosis: The CAST-FFR Study.

Circulation. Cardiovascular Interventions, 2020
BACKGROUND Coronary artery disease is common in patients with severe aortic stenosis. Computed tomography-derived fractional flow reserve (CT-FFR) is a clinically used modality for assessing coronary artery disease, however, its use has not been ...
M. Michail, A. Ihdayhid, A. Comella, U. Thakur, J. Cameron, L. McCormick, R. Gooley, S. Nicholls, A. Mathur, A. Hughes, B. Ko, A. Brown   +11 more
semanticscholar   +1 more source

Left hippocampus sparing model for glioblastoma radiotherapy by utilizing knowledge‐based planning and multi‐criteria optimization

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Results of a prospective, randomized controlled trial at our institute demonstrate an association between the dose to the left hippocampus and neurocognitive decline post‐radiotherapy for patients with glioblastoma. To minimize the dose to the left hippocampus, a left hippocampus sparing model was created using RapidPlan (RP) and multi‐
Shima Y. Tari, Amr Heikal, Connie Le, Fan Yang, Deepak Dinakaran, John Amanie, Albert Murtha, Lindsay S. Rowe, Wilson H. Roa, Samir Patel   +9 more
wiley   +1 more source

Fast Virtual Fractional Flow Reserve Based Upon Steady-State Computational Fluid Dynamics Analysis

JACC: Basic to Translational Science, 2017
Fractional flow reserve (FFR)-guided percutaneous intervention is superior to standard assessment but remains underused. The authors have developed a novel “pseudotransient” analysis protocol for computing virtual fractional flow reserve (vFFR) based ...
Paul D. Morris, PhD, Daniel Alejandro Silva Soto, PhD, Jeroen F.A. Feher, MSc, Dan Rafiroiu, PhD, Angela Lungu, PhD, Susheel Varma, PhD, Patricia V. Lawford, PhD, D. Rodney Hose, PhD, Julian P. Gunn, MD   +8 more
doaj   +1 more source

Collateral donor artery physiology and the influence of a chronic total occlusion on fractional flow reserve [PDF]

, 2015
Background— The presence of a concomitant chronic total coronary occlusion (CTO) and a large collateral contribution might alter the fractional flow reserve (FFR) of an interrogated vessel, rendering the FFR unreliable at predicting ischemia should the ...
Alahmar, A., Alahmar, Albert, Alamgir, F., Alamgir, Farquad, Cunnington, Michael S., Davies, Justin E., Hoye, Angela, Ladwiniec, A., Ladwiniec, Andrew, Mather, Adam N., Nijjer, Sukhjinder S., Oliver, Richard M., Rossington, J., Rossington, Jennifer, Thackray, S., Thackray, Simon   +15 more
core   +1 more source

Diagnostic Accuracy of a Machine-Learning Approach to Coronary Computed Tomographic Angiography–Based Fractional Flow Reserve: Result From the MACHINE Consortium

Circulation Cardiovascular Imaging, 2018
Background: Coronary computed tomographic angiography (CTA) is a reliable modality to detect coronary artery disease. However, CTA generally overestimates stenosis severity compared with invasive angiography, and angiographic stenosis does not ...
Adriaan Coenen, Young-Hak Kim, M. Kruk, C. Tesche, J. Geer, A. Kurata, M. Lubbers, J. Daemen, L. Itu, S. Rapaka, Puneet S. Sharma, C. Schwemmer, A. Persson, J. Schoepf, C. Kepka, D. Yang, K. Nieman   +16 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

Comparison of 1D and 3D Models for the Estimation of Fractional Flow Reserve [PDF]

arXiv, 2018
In this work we propose to validate the predictive capabilities of one-dimensional (1D) blood flow models with full three-dimensional (3D) models in the context of patient-specific coronary hemodynamics in hyperemic conditions. Such conditions mimic the state of coronary circulation during the acquisition of the Fractional Flow Reserve (FFR) index ...
arxiv  

Endothelial and Non-Endothelial Coronary Blood Flow Reserve and Left Ventricular Dysfunction in Systemic Hypertension [PDF]

, 2009
OBJECTIVES: We evaluated the impairment of endothelium-dependent and endothelium-independent coronary blood flow reserve after administration of intracoronary acetylcholine and adenosine, and its association with hypertensive cardiac disease ...
Fernandes, Fábio, Mady, Charles, Matsumoto, Afonso Yoshikiro, Nastari, Luciano, Neto, Pedro Alves Lemos, Pereira, Valéria Fontenelle Angelim, Rocha, Aloísio Marchi, Salemi, Vera Maria Cury   +7 more
core   +5 more sources

Real-world clinical utility and impact on clinical decision-making of coronary computed tomography angiography-derived fractional flow reserve: lessons from the ADVANCE Registry

European Heart Journal, 2018
Aims Non-invasive assessment of stable chest pain patients is a critical determinant of resource utilization and clinical outcomes. Increasingly coronary computed tomography angiography (CCTA) with selective CCTA-derived fractional flow reserve (FFRCT ...
T. Fairbairn, K. Nieman, T. Akasaka, B. Nørgaard, D. Berman, G. Raff, L. Hurwitz-Koweek, G. Pontone, T. Kawasaki, N. Sand, J. Jensen, T. Amano, M. Poon, Kristian A. Øvrehus, J. Sonck, M. Rabbat, S. Mullen, B. de Bruyne, C. Rogers, H. Matsuo, Jeroen J. Bax, J. Leipsic, M. Patel   +22 more
semanticscholar   +1 more source