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10221por Phythian, Clare J., Mullan, Siobhan, Butterworth, Andrew, Lambton, Sarah, Ilić, Jelena, Burazerović, Jelena, Burazerović, Elvir, Leach, Katharine A.“…The aim of this pilot study was to: (1) test the feasibility of a protocol for monitoring farm animal welfare in Serbia, (2) ascertain preliminary data on animal‐based outcomes of farm welfare and (3) gain insight into Serbian farmers’ understanding of animal welfare as part of a wider project working towards inclusion of animal‐based assessments in a ‘higher welfare’ voluntary assurance scheme. This study encompasses the first national survey of farm animal welfare in which animal‐based outcomes were tested on 105 farms by a total of ten trained assessors. …”
Publicado 2017
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10222por Schuller, Bradley W., Burns, Angi, Ceilley, Elizabeth A., King, Alan, LeTourneau, Joan, Markovic, Alexander, Sterkel, Lynda, Taplin, Brigid, Wanner, Jennifer, Albert, Jeffrey M.“…CONCLUSIONS: This report provides important details on the initial steps we took to complete our first FMEA, providing guidance for community practices seeking to incorporate this process into their quality assurance (QA) program. Determining the feasibility of implementing complex QA processes into different practice settings will take on increasing significance as the field of radiation oncology transitions into the new TG‐100 QA paradigm.…”
Publicado 2017
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10223“…The purpose of this work was to perform the initial evaluation of primary diagnostic monitor (PDM) characteristics following the implementation of New York City quality assurance (NYC QA) regulations on January 1, 2016, and compare the results of the QA measurements performed by an external photometer and the PDM manufacturer's built‐in photometer. …”
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10224“…The purpose of this study was to develop a method of performing routine periodical quality controls (QC) of CT systems by automatically analyzing key performance indicators (KPIs), obtainable from images of manufacturers' quality assurance (QA) phantoms. A KPI pertains to a measurable or determinable QC parameter that is influenced by other underlying fundamental QC parameters. …”
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10225por Pardo, Eduardo, Novais, Juan Castro, Molina López, María Yolanda, Maqueda, Sheila Ruiz“…This method relies on the clinical algorithm used for dose calculation and is able to verify the FFF modes, as well as being useful for machine quality assurance. The procedure described does not require new hardware. …”
Publicado 2016
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10226por Young, Michael R., Craft, David L., Colbert, Caroline M., Remillard, Kyla, Vanbenthuysen, Liam, Wang, Yi“…The treatment efficiency was compared using plan monitor units (MU) and net beam‐on time. Plan quality assurance was performed using the Sun Nuclear ArcCHECK phantom and a gamma criteria of 3%/3 mm. …”
Publicado 2016
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10227“…Hence, users should implement a quality assurance program to maintain IQ. In our routine IQ tests of the kV cone‐beam CT system (Elekta XVI), image noise was quantified by noise standard deviation (NSD), which was the standard deviation of CT numbers measured in a small area in an image of an IQ test phantom (Catphan), and the high spatial resolution (HSR) was evaluated by the number of line‐pairs (LPN) visually recognizable in the image. …”
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10228por Pukala, Jason, Johnson, Perry B., Shah, Amish P., Langen, Katja M., Bova, Frank J., Staton, Robert J., Mañon, Rafael R., Kelly, Patrick, Meeks, Sanford L.“…The data produced in the process are important for comparative purposes, particularly when considering the implementation and quality assurance of DIR algorithms. In this work, five commercial DIR algorithms (MIM, Velocity, RayStation, Pinnacle, and Eclipse) were benchmarked using a set of 10 virtual phantoms. …”
Publicado 2016
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10229por Celi, Sofia, Costa, Emilie, Wessels, Claas, Mazal, Alejandro, Fourquet, Alain, Francois, Pascal“…The additional breast and prostate studies exhibit the prospects of EPIgray as an easy supplementary quality assurance tool. The validation, the automatization, and the reduction of false‐positive results represent an important step toward adaptive radiotherapy with EPIgray. …”
Publicado 2016
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10230por Goodall, Simon, Harding, Nicholas, Simpson, Jake, Alexander, Louise, Morgan, Steve“…This work describes the replacement of Tissue Phantom Ratio (TPR) measurements with beam profile flatness measurements to determine photon beam quality during routine quality assurance (QA) measurements. To achieve this, a relationship was derived between the existing [Formula: see text] energy metric and beam flatness, to provide baseline values and clinically relevant tolerances. …”
Publicado 2015
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10231“…Constancy checks of a well‐type ionization chamber should be performed regularly as part of a quality assurance regime. The goal of this work was to test the feasibility of using a linear accelerator and an orthovoltage unit to check the constancy of a well‐type chamber's response to an external radiation source. …”
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10232por Song, Ji‐Hye, Kim, Min‐Joo, Park, So‐Hyun, Lee, Seu‐Ran, Lee, Min‐Young, Lee, Dong Soo, Suh, Tae Suk“…The American Association of Physicists in Medicine Task Group 119 instructed institutions to use a low‐dose threshold of 10% or a region of interest determined by the jaw setting when they collected gamma analysis quality assurance (QA) data for the planar dose distribution. …”
Publicado 2015
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10233por Capizzi, Irene, Teta, Luigi, Vigotti, Federica Neve, Tognarelli, Giuliana, Consiglio, Valentina, Scognamiglio, Stefania, Piccoli, Giorgina Barbara“…This case suggests that our patients can benefit from the same options available to non-CKD (chronic kidney disease) individuals, provided that strict multidisciplinary surveillance is assured.…”
Publicado 2017
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10234“…The responsible institutions are called upon to implement sustainable reforms in the sense of postgraduate education that is structured according to educational principles and whose quality is assured.…”
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10235“…Above-ground plant organs were exposed to typical alpine climate conditions (high solar radiation and cool nights) at 2440 m a.s.l. in the Swiss Alps to assure continuous source activity. Image-based measurements of root growth (root elongation rates at 12-h intervals, RERs) were combined with anatomical examinations in thermally constrained root tips as well as with a functional growth analysis of entire plants. …”
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10236por Manikandan, Arjunan, Sarkar, Biplab, Nandy, Maitreyee, Sureka, Chandra Sekaran, Gossman, Michael S., Sujatha, Nadendla, Rajendran, Vivek Thirupathur“…Direct comparison of measurements for plans with and without the error permitted observational characteristics for quality assurance performance between detectors. A total of 48 different plans were evaluated for this testing. …”
Publicado 2014
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10237“…The test suite can be used to evaluate the impact of minor repairs, detect changes in machine performance over time, and supplement other machine quality assurance testing. PACS numbers: 87.56bd, 87.56Fc…”
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10238“…The focus of this study is to establish a dosimetry quality assurance procedure involving both two‐dimensional (2D) and three‐dimensional (3D) volumetric verifications, which is desirable for a large PTV treated with multiple isocenters. …”
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10239por Takakura, Toru, Nakamura, Mitsuhiro, Shibuya, Keiko, Nakata, Manabu, Nakamura, Akira, Yukinori, Matsuo, Shiinoki, Takeshi, Higashimura, Kyoji, Teshima, Teruki, Hiraoka, Masahiro“…We also developed a treatment planning technique that shortens breath‐holding time without increasing dosimetric quality assurance workload. The key feature of our proposed method is performance of dose calculation using the same optimized fluence map as the original plan, after dose per fraction in the original plan was cut in half and the number of fractions was doubled. …”
Publicado 2013
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10240por García‐Vicente, Feliciano, Fernández, Virginia, Bermüdez, Rocío, Gómez, Alberto, Pérez, Leopoldo, Zapatero, Almudena, Torres, Juan J.“…The aim of this study is to determine the gantry angle and multileaf collimator (MLC) gap error‐detection threshold of a diode helical array with an inserted microionization chamber in order to use this device for the pretreatment quality assurance (QA) of intensity‐modulated radiation therapy (IMRT) treatments. …”
Publicado 2012
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