Results 141 to 150 of about 2,679,915 (389)

A Python package for fast GPU‐based proton pencil beam dose calculation

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Open‐source GPU‐based Monte Carlo (MC) proton dose calculation algorithms provide high speed and unparalleled accuracy but can be complex to integrate with new applications and remain slower than GPU‐based pencil beam (PB) methods, which sacrifice some physical accuracy for sub‐second plan calculation.
Mahasweta Bhattacharya, Calin Reamy, Heng Li, Junghoon Lee, William T. Hrinivich   +4 more
wiley   +1 more source

S-parameter calibration procedure for multiport microwave imaging systems [PDF]

arXiv, 2019
Multitude of antennas are typically used in microwave imaging systems. Here we outline a simple and effective calibration method for multiport imaging systems. By using only one additional component, an electronic calibration module (ECal), one port is calibrated and the calibration plane is thereby moved to the antenna connector. Assuming all antennas
arxiv  

A machine learning calibration model using random forests to improve sensor performance for lower-cost air quality monitoring

, 2018
. Low-cost sensing strategies hold the promise of denser air quality monitoring networks, which could significantly improve our understanding of personal air pollution exposure.
Naomi Zimmerman, A. Presto, Srini Kumar, Jason Gu, A. Hauryliuk, E. Robinson, A. Robinson, R. Subramanian   +7 more
semanticscholar   +1 more source

Clinical validation of myOSLchip: A beryllium oxide optically stimulated luminescent dosimeter (OSLD) system in radiotherapy dosimetry

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract In radiation oncology, inter‐fractional dosimetry using optically stimulated luminescent detectors (OSLDs) ensures accurate plan delivery and patient safety. RadPro International GmbH's myOLSchip system, featuring a beryllium oxide (BeO) OSL dosimeter, reader, and eraser, was characterized and calibrated with a Varian Truebeam for in‐vivo ...
Heath Davis, Jeffrey V. Siebers, Krishni Wijesooriya, Matt Mistro   +3 more
wiley   +1 more source

Implementation of needle‐tracking technology for real‐time transrectal ultrasound‐guided interstitial gynecological HDR brachytherapy: A feasibility study

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To investigate the feasibility of adapting a commercial prostate biopsy system for transrectal ultrasound (TRUS)‐guided hybrid gynecological (GYN) high‐dose‐rate (HDR) brachytherapy (BT). Leveraging 3D‐TRUS and MR image fusion, the prototype system aims to improve real‐time needle placement accuracy.
Lindsey H. Bloom, Diandra Ayala‐Peacock, Rajesh Venkataraman, Brett Eckroate, Ryan Sanford, Junzo Chino, Yongbok Kim, Julie Raffi, Oana Craciunescu   +8 more
wiley   +1 more source

XLV. Description of a new spectrophotometer and an optical method of calibration [PDF]

, 1899
D. B. Brace
openalex   +1 more source

Log file‐based quality assurance method for respiratory gating system

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background As medical linear accelerator technology advances, enabling higher dose rate deliveries, hypofractionation regimens has increased. This necessitates respiratory gating systems that synchronize radiation delivery with tumor position, requiring simple rigorous quality assurance (QA) to ensure treatment accuracy and patient safety ...
Wonjoong Cheon, Young Kyu Lee, Yunji Seol, Chan‐beom Park, Hong Qi Tan, Kyu Hye Choi, Young‐nam Kang, Byung Ock Choi   +7 more
wiley   +1 more source

Synchronous Atmospheric Correction of Wide-Swath and Wide-Field Remote Sensing Image from HJ-2A/B Satellite

Remote Sensing
The Chinese HuanjingJianzai-2 (HJ-2) A/B satellites are equipped with advanced sensors, including a Multispectral Camera (MSC) and a Polarized Scanning Atmospheric Corrector (PSAC).
Honglian Huang, Yuxuan Wang, Xiao Liu, Rufang Ti, Xiaobing Sun, Zhenhai Liu, Xuefeng Lei, Jun Lin, Lanlan Fan   +8 more
doaj   +1 more source

Deep Ensemble Shape Calibration: Multi-Field Post-hoc Calibration in Online Advertising [PDF]

arXiv
In the e-commerce advertising scenario, estimating the true probabilities (known as a calibrated estimate) on Click-Through Rate (CTR) and Conversion Rate (CVR) is critical. Previous research has introduced numerous solutions for addressing the calibration problem.
arxiv  

Digital Calibration Method for High Resolution in Analog/RF Designs [PDF]

arXiv, 2016
Transistor random mismatch continuously poses challenges for analog/RF circuit design for achieving high accuracy and high yield as the process technology advances. Existing statistical element selection (SES) design method can improve transistor matching property, but it falls short of being a general calibration method due to its limited calibration ...
arxiv