Results 51 to 60 of about 29,522 (319)

Understanding and Overcoming Immunotherapy Resistance in Skin Cancer: Mechanisms and Strategies

Aging and Cancer, EarlyView.
This narrative review explores the mechanisms driving immunotherapy resistance in skin cancer, including tumor microenvironment factors, genetic mutations, and immune evasion strategies. It highlights potential strategies to overcome resistance, offering insights for improving therapeutic outcomes and guiding future research in personalized ...
Shreya Singh Beniwal, Abhimanyu Chiraparambil Radhakrishnan, Ayanchetty Haripraba, Saif Syed, Gajawada Pragna, Ayush Dwivedi, Akash Rawat, Daniela Castro Calderón, Martin Cevallos‐Cueva   +8 more
wiley   +1 more source

Deep-Reinforcement-Learning-Based Semantic Navigation of Mobile Robots in Dynamic Environments [PDF]

IEEE International Conference on Automation Science and Engineering (CASE) 2020, Hong Kong, 2020
Mobile robots have gained increased importance within industrial tasks such as commissioning, delivery or operation in hazardous environments. The ability to autonomously navigate safely especially within dynamic environments, is paramount in industrial mobile robotics. Current navigation methods depend on preexisting static maps and are error-prone in
arxiv  

Body contour adaptation for weight‐loss and bolus for head and neck radiotherapy on Ethos version 2.0 and HyperSight: Synthetic CT versus direct calculation

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose In radiotherapy, body contour inaccuracies may compromise the delineation of adjacent structures and affect calculated dose. Here, we evaluate the un‐editable body contours auto‐generated by Ethos versions 1.0 (v1) and 2.0 (v2) treatment planning softwares for two simulated cases: weight‐loss and bolus application, particularly ...
Abby Yashayaeva, R. Lee MacDonald, Amanda Cherpak   +2 more
wiley   +1 more source

A model of head direction and landmark coding in complex environments.

PLoS Computational Biology, 2021
Environmental information is required to stabilize estimates of head direction (HD) based on angular path integration. However, it is unclear how this happens in real-world (visually complex) environments.
Yijia Yan, Neil Burgess, Andrej Bicanski
doaj   +1 more source

Improving VMAT dose calculation accuracy and planning quality via a GPU‐accelerated Fourier transform dose calculation algorithm

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Inverse planning typically utilizes fast, less accurate dose calculation algorithms during the iterative optimization process, thus leading to dose calculation errors (DCEs) and suboptimal plans that often require dose normalization and/or plan re‐optimization.
Kenny Guida, Chaoqiong Ma, Joy Patel, Krishna Reddy, H. Harold Li   +4 more
wiley   +1 more source

In vivo tumor detection with combined MR–Photoacoustic-Thermoacoustic imaging [PDF]

Journal of Innovative Optical Health Sciences, 2016
Here, we report a new method using combined magnetic resonance (MR)–Photoacoustic (PA)–Thermoacoustic (TA) imaging techniques, and demonstrate its unique ability for in vivo cancer detection using tumor-bearing mice.
Lin Huang, Wei Cai, Yuan Zhao, Dan Wu, Lei Wang, Yuqing Wang, Dakun Lai, Jian Rong, Fabao Gao, Huabei Jiang   +9 more
doaj   +1 more source

Stochastic High Fidelity Simulation and Scenarios for Testing of Fixed Wing Autonomous GNSS-Denied Navigation Algorithms [PDF]

arXiv, 2021
Autonomous unmanned aerial vehicle (UAV) inertial navigation exhibits an extreme dependency on the availability of global navigation satellite systems (GNSS) signals, without which it incurs in a slow but unavoidable position drift that may ultimately lead to the loss of the platform if the GNSS signals are not restored or the aircraft does not reach a
arxiv  

Computational Guidance & Navigation for Bearings-Only Rendezvous – methods and outcomes of GUIBEAR

, 2021
GUIBEAR is an on-going activity supported by the European Space Agency aimed at the demonstration of the feasibility of bearings-only (B-O) far-range rendezvous in near rectilinear Halo orbits (NROs). The studied scenario is the far-range rendezvous of the HERACLES Lunar Ascent Element (LAE) with the Lunar Orbital Platform – Gateway (LOP-G) that is ...
Serra, Pedro, Lourenço, Pedro, Branco, João, Briz Valero, José, Mammarella, Marco, Peters, Thomas Vincent, Portela, Dario Mora, Manara, Silvia, Bernardini, Daniele, Bemporad, Alberto, Manzillo, Pierluigi Foglia, Witteveen, Jouke, Cropp, Alexander   +12 more
openaire   +1 more source

Commissioning of a motion management system for a 1.5T Elekta Unity MR‐Linac: A single institution experience

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This work describes a single institution experience of commissioning a real‐time target tracking and beam control system, known as comprehensive motion management, for a 1.5 T Elekta MR‐Linac. Methods Anatomical tracking and radiation beam control were tested using the MRI4D Quasar motion phantom.
Blake R Smith, Joel St‐Aubin, Daniel E. Hyer   +2 more
wiley   +1 more source

Analysis, Mathematical Model and Selected Simulation Research of the GNSS Navigation Receiver Correlator

MATEC Web of Conferences, 2018
The article presents a mathematical model describing the physical phenomena occurring in the GNSS radio receiver. The main subunit which focused attention was the system of GNSS receiver correlator.
Setlak Lucjan, Kowalik Rafał
doaj   +1 more source