Results 171 to 180 of about 348,476 (369)

The effect of multi‐leaf collimator leaf width on VMAT treatment plan quality

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The advent of volumetric modulated arc therapy (VMAT) in radiotherapy has made it one of the most commonly used techniques in clinical practice. VMAT is the delivery of intensity modulated radiation therapy (IMRT) while the gantry is in motion, and existing literature has shown it has decreased treatment delivery times and the ...
Gregory Sadharanu Peiris, Brendan Whelan, Nicholas Hardcastle, Suzie Lynn Sheehy   +3 more
wiley   +1 more source

Multicriteria Comparison Among Several Mitigation Strategies for Dangerous Near-Earth Objects [PDF]

, 2008
Joan-Pau Sanchez Cuartielles, Camilla Colombo, Massimiliano Vasile, G. Radice   +3 more
openalex   +1 more source

Observations of Near Earth Objects with Spitzer

, 2016
We are carrying out an Exploration Science Warm Spitzer program entitled NEOSurvey in which we are observing 550 Near Earth Objects in 710 hours of Spitzer time. For each object we use a thermal model to derive diameter and albedo. For each object we also derive a (partial) lightcurve; total elapsed observing times range from 15 minutes to 3.2 hours ...
Trilling, David E., Mommert, Michael, Hora, Joseph L., Chesley, Steven R., Emery, Joshua P., Fazio, Giovanni G., Harris, Alan, Mueller, Michael, Smith, Howard A.   +8 more
openaire   +2 more sources

From 2D to 3D gamma passing rate tolerance and action limits for patient‐specific quality assurance in volumetric‐modulated arc therapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Volumetric modulated arc therapy (VMAT) requires an accurate patient‐specific quality assurance (PSQA) program. In clinical practice, this is usually performed using the γ‐index and the two‐dimensional gamma passing rate (2D %GP). A three‐dimensional (3D) index incorporating the patient anatomy could be more useful for the 3D dose ...
Christos Zarros, George Patatoukas, Nikos Kollaros, Marina Chalkia, Andromachi Kougioumtzopoulou, Vasilios Kouloulias, Kalliopi Platoni   +6 more
wiley   +1 more source

Candidate Main-belt Asteroids for Surface Heterogeneity

The Astronomical Journal
Large terrestrial bodies in our solar system like the Earth, Mars, Mercury, and the Moon exhibit geologically complex surfaces with compositional heterogeneity.
Sunao Hasegawa, Michaël Marsset, Francesca E. DeMeo, Josef Hanuš, Richard P. Binzel, Schelte J. Bus, Brian Burt, David Polishook, Cristina A. Thomas, Jooyeon Geem, Masateru Ishiguro, Daisuke Kuroda, Pierre Vernazza   +12 more
doaj   +1 more source

Learning Global Object-Centric Representations via Disentangled Slot Attention [PDF]

arXiv
Humans can discern scene-independent features of objects across various environments, allowing them to swiftly identify objects amidst changing factors such as lighting, perspective, size, and position and imagine the complete images of the same object in diverse settings.
arxiv  

Semi-Analytical Solution for the Optimal Low-Thrust Deflection of Near-Earth Objects [PDF]

, 2009
Camilla Colombo, Massimiliano Vasile, Gianmarco Radice   +2 more
openalex   +1 more source

Does dose calculation algorithm affect the dosimetric accuracy of synthetic CT for MR‐only radiotherapy planning in brain tumors?

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study compares the dosimetric accuracy of deep‐learning‐based MR synthetic CT (sCT) in brain radiotherapy between the Analytical Anisotropic Algorithm (AAA) and AcurosXB (AXB). Additionally, it proposes a novel metric to predict the dosimetric accuracy of sCT for individual post‐surgical brain cases.
Jeffrey C. F. Lui, Francis K. H. Lee, C. C. Law, James C. H. Chow   +3 more
wiley   +1 more source

Subsurface momentum coupling analysis for near-earth-object orbital management

, 1995
John L. Remo, Pasquale M. Sforza
openalex   +1 more source

Astrometric Observations of a Near-Earth Object Using the Image Fusion Technique [PDF]

, 2021
Yi-Gong Zhang, Jiancheng Wang, Jie Su, X. Cheng, Zhenjun Zhang   +4 more
openalex   +1 more source