Articles with "field size" as a keyword



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Evaluation of skin dose calculation factors in interventional fluoroscopy

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Published in 2019 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.12725

Abstract: Abstract Purpose The purpose of this study was to measure fluoroscopic dose calculation factors for modern fluoroscopy‐guided interventional (FGI) systems, and to fit to analytical functions for peak skin dose (PSD) calculation. Methods Table transmission… read more here.

Keywords: kcf; dose calculation; calculation; field size ... See more keywords
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Linac primary barrier transmission: Flattening filter free and field size dependence

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Published in 2023 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.13886

Abstract: Abstract There is widespread consensus in the literature that flattening filter free (FFF) beams have a lower primary barrier transmission than flattened beams. Measurements presented here, however, show that for energy compensated FFF beams, the… read more here.

Keywords: field; barrier transmission; field size; transmission ... See more keywords
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A universal parameterized gradient‐based method for photon beam field size determination

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Published in 2017 at "Medical Physics"

DOI: 10.1002/mp.12573

Abstract: Purpose: To propose a universal, parameterized gradient‐based method (PGM) for radiation field size determination. Methods: The PGM locates the beam profile's edge by parameterizing its penumbra region with a modified sigmoid function where the inflection… read more here.

Keywords: size determination; field size; field; size ... See more keywords
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On the field size definition and field output factors in small field dosimetry.

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Published in 2023 at "Medical physics"

DOI: 10.1002/mp.16262

Abstract: BACKGROUND There is a major conceptual difference between small-field and large field dosimetry i.e., different definition of the field size. The dosimetry protocol IAEA TRS-483 recommends the use of the field size defined by measured… read more here.

Keywords: field size; small field; output factors; size ... See more keywords
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Coupled effect of in-plane magnetic field and size effect on vibration properties of the completely free double-layered nanoplate system

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Published in 2019 at "Physica E: Low-dimensional Systems and Nanostructures"

DOI: 10.1016/j.physe.2018.12.020

Abstract: Abstract The coupled effects of an in-plane magnetic field and the size effect on free vibration of a completely free magnetically affected orthotropic double-layered nanoplate system (DLNS) embedded in elastic media are examined by a… read more here.

Keywords: field size; vibration; plane magnetic; magnetic field ... See more keywords
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The output factor correction as function of the photon beam field size - direct measurement and calculation from the lateral dose response functions of gas-filled and solid detectors.

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Published in 2018 at "Zeitschrift fur medizinische Physik"

DOI: 10.1016/j.zemedi.2017.07.006

Abstract: The first aim of this study has been to extend the systematic experimental study of the field size dependence of the output factor correction for three micro-ionization chambers (PTW 31014, PTW 31022 and IBA Razor… read more here.

Keywords: field size; field; correction; output ... See more keywords
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Testing the potential benefits of small fields for biocontrol needs a landscape perspective

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Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.2218447120

Abstract: Rosenheim et al. (1) present an interesting study testing the effect of focal field size on pest suppression across multiple cropping systems. The main conclusion of their study is “The idea that larger field sizes… read more here.

Keywords: effect; field size; pest suppression; size ... See more keywords
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The role of the visual field size in artificial vision

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Published in 2023 at "Journal of Neural Engineering"

DOI: 10.1088/1741-2552/acc7cd

Abstract: Objective. Artificial vision has been and still is the subject of intense research. The ultimate goal is to help blind people in their daily life. Approaches to artificial vision, including visual prostheses and optogenetics, have… read more here.

Keywords: visual field; artificial vision; field size; vision ... See more keywords
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EFFECTS OF FIELD SIZE AND DEPTH ON PHOTONEUTRON DOSE EQUIVALENT DISTRIBUTIONS IN AN 18 MV X-RAY MEDICAL ACCELERATOR

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Published in 2017 at "Radiation Protection Dosimetry"

DOI: 10.1093/rpd/ncx018

Abstract: Photoneutron (PN) dosimetry studies in high-energy X-ray medical accelerators are of high clinical and scientific interest in particular to protect patients undergoing radiotherapy. In this context, fast, epithermal and thermal PN dose equivalent distributions in… read more here.

Keywords: depth; equivalent distributions; field size; field ... See more keywords
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A study on the correlation between radiation field size and gamma index passing rate for MatriXX

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Published in 2019 at "Medicine"

DOI: 10.1097/md.0000000000016536

Abstract: Abstract This study aimed to analyze the influence of the radiation field size on the passing rate of the treatment planning system using MatriXX if the field irradiated the circuit. Two sets of static fields… read more here.

Keywords: field size; rate; radiation field; passing rate ... See more keywords
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Efficient Hardware Implementation of Large Field-Size Elliptic Curve Cryptographic Processor

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Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3141104

Abstract: Due to rapid development in secured technological devices, the efficient implementation of a large field-size elliptic curve cryptosystem (ECC) is becoming demanding in many critical applications. Therefore, this paper presents a new Montgomery point multiplication… read more here.

Keywords: implementation; large field; field size; processor ... See more keywords