Article
Oncology
Joerg Lehmann, Mohammad Hussein, Miriam A. Barry, Shankar Siva, Alisha Moore, Michael Chu, Patricia Diez, David J. Eaton, Jeffrey Harwood, Peta Lonski, Elizabeth Claridge Mackonis, Carole Meehan, Rushil Patel, Xenia Ray, Maddison Shaw, Justin Shepherd, Gregory Smyth, Therese S. Standen, Brindha Subramanian, Peter B. Greer, Catharine H. Clark
Summary: This study aims to improve the quality of radiation therapy and patient outcomes by assessing institutions' ability to detect errors through routine Patient Specific Quality Assurance (PSQA). A new audit concept is needed as existing dosimetry audits may not catch all errors. The study evaluates institutions' ability to detect errors by embedding deliberately introduced edits into radiation treatment plans.
RADIOTHERAPY AND ONCOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jennifer M. Steers, Benedick A. Fraass
Summary: Many speculations have been made about the reasons for gamma comparison insensitivity in patient-specific quality assurance analysis, but the true reasons have not been clarified yet. Failing to understand the reasons for this insensitivity limits our ability to improve the gamma metric or develop new comparison techniques.
Article
Radiology, Nuclear Medicine & Medical Imaging
David A. Roberts, Carlos Sandin, Panu T. Vesanen, Hannah Lee, Ian M. Hanson, Simeon Nill, Thijs Perik, Seng Boh Lim, Sastry Vedam, Jinzhong Yang, Simon W. Woodings, Jochem W. H. Wolthaus, Brian Keller, Geoff Budgell, Xinfeng Chen, X. Allen Li
Summary: Magnetic resonance image-guided radiotherapy systems have introduced new challenges to quality assurance due to the unique characteristics of the systems. There is currently no consensus guidance on QA equipment and test requirements, necessitating the development of an overview and recommendations for different aspects of QA for such systems. This consensus work aims to provide a foundation for future research and development in QA protocols and measurement methods.
Article
Radiology, Nuclear Medicine & Medical Imaging
Joseph V. Panetta, Iavor Veltchev, Robert A. Price, C-M Charlie Ma
Summary: This study investigates the effect of dose gradient on quality assurance passing rate in IMRT delivery. The results show that the passing rate is generally correlated to the dose gradient, but the correlation is not predictable and varies with the measurement location.
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
(2023)
Article
Agriculture, Multidisciplinary
Nathalia Zanetti Barros, Marco Aurelio Speranca, Fabiola Manhas Verbi Pereira
Summary: The study used a digital image system and multivariate calibration strategy to analyze 64 samples of white crystal cane sugar, showing that the method can accurately estimate sugar content and perform well in identifying different content ranges. The new method is affordable and reliable, allowing for quick screening in situations where access to a laboratory and instrumentation is limited.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Chanil Jeon, Jinhyeop Lee, Jungwook Shin, Wonjoong Cheon, Sunghwan Ahn, Kwanghyun Jo, Youngyih Han
Summary: A log-file-based Monte Carlo simulation method for patient quality assurance (QA) in line-scanning proton therapy was successfully developed. The results showed that the proposed method exhibited clinically acceptable accuracy when applying the 2%/2 mm criterion and had the potential to replace measurement-based dosimetry QA methods.
Article
Radiology, Nuclear Medicine & Medical Imaging
Elena De Martin, Sultan Alhujaili, Maria Luisa Fumagalli, Francesco Ghielmetti, Marcello Marchetti, Pasqualina Gallo, Domenico Aquino, Francesco Padelli, Jeremy Davis, Saree Alnaghy, Mauro Carrara, Laura Fariselli, Anatoly B. Rosenfeld, Marco Petasecca
Summary: The study evaluated the potential of an innovative edgeless silicon diode for patient-specific radiosurgery treatment plan verification, showing good performance in reference dosimetry data. This angular independent technology can be used for treatments in non-coplanar, non-isocentric stereotactic radiosurgery modalities.
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Evan Gates, Bing-Hao Chiang, Alan Kalet, Minsun Kim
Summary: This study evaluated the impact of an integrated whiteboard system with the oncology information system (OIS) on the urgency of physics quality assurance tasks in the radiation oncology department. The results showed that the integrated whiteboard system significantly reduced the proportion of last-minute physics work, increasing patient safety.
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Meta Kokalj Ladan, Nina Kocevar Glavac
Summary: Vegetable oils have been widely used in various industries and have positive effects on human health, skincare, and treatments. Traditional monitoring methods are time-consuming and lack repeatability, whereas infrared spectroscopy shows promise in assessing the quality and fatty acid composition of vegetable oils.
Review
Chemistry, Applied
E. J. Rifna, R. Pandiselvam, Anjineyulu Kothakota, K. V. Subba Rao, Madhuresh Dwivedi, Manoj Kumar, Rohit Thirumdas, S. V. Ramesh
Summary: The combination of process analytical tools with chemometrics provides a powerful technique for identifying adulterants in edible oils, with applications in quality monitoring, geographic origin assessment, process evaluation, and product categorization.
Article
Radiology, Nuclear Medicine & Medical Imaging
Madoka Sakai, Hisashi Nakano, Daisuke Kawahara, Satoshi Tanabe, Takeshi Takizawa, Akihiro Narita, Takumi Yamada, Hironori Sakai, Masataka Ueda, Ryuta Sasamoto, Motoki Kaidu, Hidefumi Aoyama, Hiroyuki Ishikawa, Satoru Utsunomiya
Summary: The machine learning models based on radiomic features showed higher sensitivity and specificity in detecting MLC modeling errors and MLC positional errors. The highest sensitivity was 0.913 for TF errors, 0.978 for DLG errors, and 1.000 for MLC positional errors.
Article
Education & Educational Research
Angela Yung Chi Hou, Christopher Hill, Dewin Justiniano, Arianna Fang Yu Lin, Sandy Tasi
Summary: This paper explores the legitimacy of employers in Asian national higher education and quality assurance system. The study finds that Asian governments emphasize employer engagement in QA policies, but the effectiveness of the emerging practice is still limited. The approaches of employer engagement in QA governance vary across different countries.
Review
Medical Laboratory Technology
Huub H. van Rossum
Summary: Technical quality assurance and quality control are important activities in medical laboratories to ensure the quality of test results. There are various QA/QC tools available, and a new concept called IQAC, which integrates quality assurance and control, has been introduced.
CRITICAL REVIEWS IN CLINICAL LABORATORY SCIENCES
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
John T. Stasko, William S. Ferris, David P. Adam, Wesley S. Culberson, Sean P. Frigo
Summary: The study aimed to analyze treatment plans and predict which plans will fail a standard quality assurance measurement. A tool was created to analyze MLC positions and provide information for evaluation metrics calculation. Results showed significant correlation between MLC positions and median dose differences, but not with gamma analysis pass percentages.
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS
(2023)
Article
Food Science & Technology
Nuno Rodrigues, Kevin Silva, Ana C. A. Veloso, Jose Alberto Pereira, Antonio M. Peres
Summary: Flavoring with cinnamon, garlic, and rosemary significantly impacted the physical and chemical characteristics of Arbequina extra virgin olive oils. Despite changes in sensory profiles and oxidative stability, all oils met the legal requirements for EVOO classification. The use of an electronic nose successfully distinguished between flavored and unflavored oils, showing potential as a non-destructive tool for verifying olive oil flavoring practices.
Article
Chemistry, Inorganic & Nuclear
R. Galea, K. Moore
Summary: In this study, the solution of 225Ac was standardized using the TDCR method. The counting efficiencies were calculated to be approximately 500% for the NRC TDCR system. The relative uncertainty for the activity concentration was determined to be 0.25%. The measured half-life of 225Ac was found to be consistent with previous measurements.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
N. C. Ramirez, S. M. Collins
Summary: In this paper, the authors determined the half-life of 68Ga using ionisation chambers measurements and HPGe gamma-ray spectrometry. They reviewed the current literature and identified possible causes of inconsistency within the dataset. The findings suggest that addressing these issues could lead to a significant improvement in future evaluations of the half-life.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
C. P. Mano, C. Chapelle, Der Mesrobian Kabakian, H. Paradis, O. Delaune, L. Patryl
Summary: CEA/DAM is developing new beta-gamma measurement systems to enhance the reliability of the Comprehensive Nuclear Test Ban Treaty's verification regime. A new spectral unmixing algorithm for full-spectrum analysis was tested to improve analysis methods for nuclear activities with low statistics.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Junyoung Lee, Geunsub Kim, Hyegang Chang, Sangmin Lee, Sung-Joon Ye
Summary: The study applied the convolution/superposition method to calculate the dose distribution of boron neutron capture therapy and compared it with the Monte Carlo method. The results showed that the C/S method has a fast calculation speed and reasonable accuracy.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Victor H. Elvira, Marie-Christine Lepy, Yves Menesguen, Stephanie Melhem
Summary: In this study, a cryogenic electrical-substitution radiometer was utilized for the primary calibration of monochromatic photon beams at a synchrotron facility, in order to determine the intrinsic efficiency and dead layer thickness of an HPGe detector. This calibration method allowed for the calculation of efficiency up to 55 keV, where the active thickness of the detector is not a determining factor. Geometrical efficiency was also determined through measurements of a radioactive source at various distances.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Ali Pashazadeh, Hamid Reza Baghani, Mostafa Robatjazi, Prajit Kadavil
Summary: This study investigated the effect of patch source geometric parameters on the depth dose distribution in skin tissue through Monte Carlo simulation. The results showed that increasing the source-to-skin distance, patch thickness, and patch diameter will reduce the depth dose distribution, with the source-to-skin distance having the most significant impact on dose gradient.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Yueli Song, Fengqun Zhou, Yajuan Hao, Xiaopeng Zhang, Pengfei Ji, Yong Li
Summary: In this study, the cross section values of the 109Ag(n,2n)108mAg reaction at different neutron energies were measured using the activation technique and off-line gamma-ray spectrometry. The results were compared with experimental data, evaluated data from libraries, and theoretical values to validate their accuracy.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhongkai Fan, Tao Hu, Xiangming Cai, Ruomei Xie, Haoxuan Li, Fengdi Qin, Shoukang Qiu, Yanliang Tan, Jian Shan
Summary: The high-precision measurement of Rn-220 is crucial for assessing and preventing thoron radiological hazards. By adding a ZnS(Ag)-coated clapboard, the issue of reduced Rn-220 concentrations due to decreased air pressure can be addressed, leading to improved detection efficiency. Experimental and simulation results provide valuable references for establishing the Rn-220 calibration factor.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
R. Han, Z. Chen, Y. Nie, B. Liu, G. Tian, X. Zhang, F. Shi, H. Sun, Z. Zhang, Y. Ding, X. Ruan, J. Ren, S. Zhang
Summary: The leakage neutron spectra of Lead samples were measured using a TOF technique, and MCNP simulations with different nuclear data libraries showed that JENDL-5.0 and JEFF-3.3 libraries have better agreement with experimental data. Differences in spectra mainly stem from variations in neutron reaction channels across the libraries, with ENDF/B-VIII.0 and CENDL-3.2 libraries being overestimated in certain energy ranges.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Nissren Tamam, Maryam Al Huwayz, Z. A. Alrowaili, Norah Alwadai, Khadijah Mohammedsaleh Katubi, Mohammed S. Alqahtani, I. O. Olarinoye, M. S. Al-Buriahi
Summary: This study investigates the radiation shielding properties and radiation protection applications of borotellurite glasses. The results show that the addition of TeO2 can enhance the glass's ability to absorb photons and fast neutrons, and effectively suppress photon buildup. These glasses also exhibit exceptional gamma radiation and fast neutron moderating abilities, making them suitable for designing lead-free, transparent, and efficient radiation protection structures.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
S. Chasapoglou, M. Kokkoris, R. Vlastou, M. Diakaki, V. Michalopoulou, A. Kalamara, G. Gkatis, A. Stamatopoulos, M. Axiotis, S. Harissopulos, A. Lagoyannis, M. I. Savva, T. Vasilopoulou, C. Lederer-Woods, N. Patronis, K. Kaperoni
Summary: This study investigated the accuracy and limitations of theoretical corrections in neutron-induced reactions on isotopically enriched Ge targets. Experimental cross-section measurements were conducted on several reactions using Ge-nat and isotopically enriched Ge targets. The results showed that the methodology using isotopically enriched targets provided accurate results without the need for theoretical corrections.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
P. G. Konstantinidis, G. S. Polymeris, E. Tsoutsoumanos, G. Kitis
Summary: This study investigates an altered version of an existing protocol to study the mechanisms and phenomena of stimulated luminescence. The protocol allows for the examination of recombination mechanisms and trapping parameters of the traps, as well as the observation of potential transitions between two different states.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
Quanzhi Yu
Summary: This study obtained the broad neutron spectrum of the Atmospheric Neutron Irradiation Spectrometer (ANIS) through Monte Carlo simulation and provided an analytic expression. By calculating the Single Error Rate (SER) and ratio, the reliability of the ANIS neutron spectrum was evaluated.
APPLIED RADIATION AND ISOTOPES
(2024)
Article
Chemistry, Inorganic & Nuclear
D. Glavic Cindro, M. Korun, T. Petrovic, B. Vodenik, B. Zorko
Summary: In gamma-ray spectrometric measurements, the decision threshold is determined by the observed value of the measurand. However, this dependence restricts its application to measurements with non-expressive indications. To address this issue, a recalculation of the decision thresholds based on the peak widths corresponding to expressive indications is proposed.
APPLIED RADIATION AND ISOTOPES
(2024)
