Results 171 to 180 of about 2,679,915 (389)

Dosimetric evaluation and clinical application of collimated apertures with proton beam line scanning in stereotactic radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Stereotactic radiotherapy (SRT) is a highly effective treatment with precision for small, localized lesions. Proton therapy, characterized by the Bragg peak, offers superior dose conformity compared to photon‐based approaches. However, challenges remain in minimizing lateral penumbra and optimizing dose delivery, particularly for small
Chen‐Yu Chou, Hsiao‐Chieh Huang, Shen‐Hao Lee, Shih‐Ming Hsu   +3 more
wiley   +1 more source

Calibrating figures

Computer Aided Geometric Design
It is known that a camera can be calibrated using three pictures of either squares, spheres, or surfaces of revolution. We give a new method to calibrate a camera with the picture of a single torus.
Lubbes, Niels, Schicho, Josef
openaire   +2 more sources

Radiotherapy medical physics in the Philippines: A contemporary overview

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose With cancer ranking as the third leading cause of death in the Philippines and a disparity in healthcare resources across regions, this research aimed to assess the state of radiotherapy medical physics in the country. Methodology The study utilized a comprehensive online survey with 94 structured questions answered by 19 clinics ...
John Paul C. Cabahug, Ramon Carlo Cruzpero, Luis E. Fong de los Santos, Eric C. Ford, Afua A. Yorke   +4 more
wiley   +1 more source

IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0–50,000 Years cal BP

Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2013
P. Reimer, E. Bard, A. Bayliss, J. Beck, P. Blackwell, C. Ramsey, C. Buck, Hai Cheng, R. Edwards, M. Friedrich, P. Grootes, T. Guilderson, H. Haflidason, Irka Hajdas, C. Hatté, T. Heaton, D. Hoffmann, A. Hogg, K. Hughen, K. Kaiser, B. Kromer, S. Manning, Mu Niu, R. Reimer, D. Richards, E. Scott, J. Southon, R. Staff, C. Turney, J. van der Plicht   +29 more
semanticscholar   +1 more source

Accuracy and reproducibility of a single‐pose image‐to‐robot registration method for mobile C‐arm cone beam CT guided histotripsy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Histotripsy is a focal tumor therapy that utilizes focused ultrasound (US) to mechanically destroy tissue. To overcome visualization limitations of diagnostic US‐guidance, C‐arm cone beam CT (CBCT)‐guided histotripsy is being developed, for which a mobile C‐arm could increase accessibility. CBCT‐guided histotripsy uses a phantom with a
Grace M. Minesinger, Paul F. Laeseke, Katrina L. Falk, Claire E. Hennen, Michael A. Speidel, Martin G. Wagner   +5 more
wiley   +1 more source

A Wide-Angle Hyperspectral Top-of-Atmosphere Reflectance Model for the Libyan Desert

Remote Sensing
Reference targets with stability, uniformity, and known reflectance on the Earth’s surface, such as deserts, can be used for the absolute radiometric calibration of satellite sensors. A wide-angle hyperspectral reflectance model at the top of atmosphere (
Fuxiang Guo, Xiaobing Zheng, Yanna Zhang, Wei Wei, Zejie Zhang, Quan Zhang, Xin Li   +6 more
doaj   +1 more source

Products of Directed Sets with Calibre $(ω_1, ω)$ [PDF]

arXiv
A directed set $P$ is calibre $(\omega_1, \omega)$ if every uncountable subset of $P$ contains an infinite bounded subset. $P$ is productively calibre $(\omega_1, \omega)$ if $P \times Q$ is calibre $(\omega_1, \omega)$ for every directed set $Q$ with calibre $(\omega_1, \omega)$, and $P$ is powerfully calibre $(\omega_1, \omega)$ if the countable ...
arxiv  

Extended 14C Data Base and Revised CALIB 3.0 14C Age Calibration Program

Radiocarbon: An International Journal of Cosmogenic Isotope Research, 1993
M. Stuiver, P. Reimer
semanticscholar   +1 more source

Optical Relative Calibration and Stability Monitoring for the Auger Fluorescence Detector

, 2005
The stability of the fluorescence telescopes of the Pierre Auger Observatory is monitored with the optical relative calibration setup. Optical fibers distribute light pulses to three different diffuser groups within the optical system.
Aramo, C., Brack, J., Caruso, R., D'Urso, D., Fazio, D., Fonte, R., Gemmeke, H., Insolia, A., Kleifges, M., Knapik, R., Martino, J. Rodriguez, Matthews, J. A. J., Menshikov, A., Miller, W., Pierre Auger Collaboration, Privitera, P.   +15 more
core   +2 more sources

Improving atmospheric CO2 retrieval based on the collaborative use of Greenhouse gases Monitoring Instrument and Directional Polarimetric Camera sensors on Chinese hyperspectral satellite GF5-02

Geo-spatial Information Science
The Greenhouse Gas Monitoring Instrument (GMI) onboard the Chinese hyperspectral satellite GF5–02 can provide abundant observations of global atmospheric CO2, which plays an important role in climate research.
Hanhan Ye, Hailiang Shi, Xianhua Wang, Erchang Sun, Chao Li, Yuan An, Shichao Wu, Wei Xiong, Zhengqiang Li, Jochen Landgraf   +9 more
doaj   +1 more source