keyword
MENU ▼
Read by QxMD icon Read
search

Physicist

keyword
https://www.readbyqxmd.com/read/29341295/sustainability-of-the-australian-radiation-oncology-workforce-a-survey-of-radiation-therapists-and-radiation-oncology-medical-physicists
#1
Georgia K B Halkett, Melissa N Berg, Lauren J Breen, David Cutt, Michael Davis, Martin A Ebert, Desley Hegney, Michael House, Rachel Kearvell, Leanne Lester, Sharon Maresse, Jan McKay
This study aimed to determine and compare Radiation Therapists' (RTs') and Radiation Oncology Medical Physicists' (ROMPs') perspectives about their profession and workplace, satisfaction with career progression opportunities, and leaving the current workplace. RTs and ROMPs who were currently or had previously worked in Australia were invited to complete an online survey. Univariate and multivariate methods were used for analysis. Participants were 342 RTs and 112 ROMPs with estimated response rates of 14% and 26% respectively...
January 17, 2018: European Journal of Cancer Care
https://www.readbyqxmd.com/read/29333732/artificial-intelligence-will-reduce-the-need-for-clinical-medical-physicists
#2
Xiaoli Tang, Brian Wang, Yi Rong
No abstract text is available yet for this article.
January 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29329998/common-error-pathways-seen-in-the-ro-ils-data-that-demonstrate-opportunities-for-improving-treatment-safety
#3
Gary Ezzell, Bhisham Chera, Adam Dicker, Eric Ford, Louis Potters, Lakshmi Santanam, Sheri Weintraub
PURPOSE: The Radiation Oncology Incident Learning System (RO-ILS) receives event reports from facilities across the country. This effort extracted common error pathways seen in the data. These pathways, expressed as fault trees, demonstrate the need for, and opportunities for, preventing these errors and/or limiting their propagation to treatment. METHODS AND MATERIALS: As of the third quarter of 2016, 2344 event reports had been submitted to RO-ILS and reviewed...
January 9, 2018: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29326297/current-status-and-future-directions-of-l%C3%A3-vy-walk-research
#4
REVIEW
Andy M Reynolds
Lévy walks are a mathematical construction useful for describing random patterns of movement with bizarre fractal properties that seem to have no place in biology. Nonetheless, movement patterns resembling Lévy walks have been observed at scales ranging from the microscopic to the ecological. They have been seen in the molecular machinery operating within cells during intracellular trafficking, in the movement patterns of T cells within the brain, in DNA, in some molluscs, insects, fish, birds and mammals, in the airborne flights of spores and seeds, and in the collective movements of some animal groups...
January 11, 2018: Biology Open
https://www.readbyqxmd.com/read/29325801/editorial-the-role-of-medical-physics-in-lung-sbrt
#5
EDITORIAL
Pietro Mancosu, Andrew Nisbet, Núria Jornet
Stereotactic body radiation therapy (SBRT) has become a standard treatment for non-operable patients with early stage non-small cell lung cancer (NSCLC). In this context, medical physics community has largely helped in the starting and the growth of this technique. In fact, SBRT requires the convergence of many different features for delivering large doses in few fractions to small moving target in an heterogeneous medium. The special issue of last month, was focused on the different physics challenges in lung SBRT...
January 9, 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29320320/mr-imaging-and-cochlear-implants-with-retained-internal-magnets-reducing-artifacts-near-highly-inhomogeneous-magnetic-fields
#6
Heidi A Edmonson, Matthew L Carlson, Alice C Patton, Robert E Watson
The number of patients receiving cochlear implants and auditory brainstem implants for severe to profound sensorineural hearing loss has rapidly increased. These implants consist of an internal component implanted between the skull and the temporal scalp and an external removable speech processor unit. A small magnet within the internal component is commonly used to hold the external speech processor unit in place. Several cochlear implant models have recently received U.S. Food and Drug Administration and European Economic Area regulatory approval to allow magnetic resonance (MR) imaging examinations to be performed under certain specified conditions...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29314026/freedom-and-the-psychoanalytic-ontology-of-quantum-physics
#7
Stefan Gullatz, Matthew Gildersleeve
Jung's paper 'Synchronicity - an acausal connecting principle', defining the phenomenon as a 'meaningful' coincidence depending on archetypal activation, was published in 1952, together with a conceptually related piece by physicist and Nobel Laureate Wolfgang Pauli entitled, 'The influence of archetypal ideas on the scientific theories of Kepler'. Slavoj Žižek, in The Indivisible Remainder: On Schelling and Related Matters, suggests that, in contrast to any notion of a 'pre-modern Jungian harmony', the main lesson of quantum physics was that not only was the psychoanalytic, empty subject of the signifier constitutively out-of-joint with respect to the world, but that the Real in itself was already incomplete, out-of-joint, 'not-all'...
February 2018: Journal of Analytical Psychology
https://www.readbyqxmd.com/read/29310933/management-of-patients-with-cardiac-implantable-electronic-devices-cied-undergoing-radiotherapy-a-consensus-document-from-associazione-italiana-aritmologia-e-cardiostimolazione-aiac-associazione-italiana-radioterapia-oncologica-airo-associazione-italiana-fisica
#8
Massimo Zecchin, Mara Severgnini, Alba Fiorentino, Vincenzo Livio Malavasi, Loris Menegotti, Filippo Alongi, Domenico Catanzariti, Barbara Alicja Jereczek-Fossa, Michele Stasi, Elvio Russi, Giuseppe Boriani
The management of patients with a cardiac implanted electronic device (CIED) receiving radiotherapy (RT) is challenging and requires a structured multidisciplinary approach. A consensus document is presented as a result of a multidisciplinary working group involving cardiac electrophysiologists, radiation oncologists and physicists in order to stratify the risk of patients with CIED requiring RT and approaching RT sessions appropriately. When high radiation doses and beam energy higher than 6MV are used, CIED malfunctions can occur during treatment...
December 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29307078/summary-of-the-italian-inter-society-recommendations-for-radiation-protection-optimization-in-interventional-radiology
#9
Gaetano Compagnone, Renato Padovani, Maria Antonietta D'Avanzo, Sveva Grande, Francesco Campanella, Antonella Rosi
OBJECTIVES: A Working Group coordinated by the Italian National Institute of Health (Istituto Superiore di Sanità) and the National Workers Compensation Authority (Istituto Nazionale per l'Assicurazione contro gli Infortuni sul Lavoro, INAIL) and consisting of 11 Italian scientific/professional societies involved in the fluoroscopically guided interventional practices has been established to define recommendations for the optimization of patients and staff radiation protection in interventional radiology...
January 6, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29299819/determination-of-task-group-43-dosimetric-parameters-for-csm40-137cs-source-for-use-in-brachytherapy
#10
Mohammad Mehdi Firoozabadi, Elaheh Jimabadi, Mahdi Ghorbani, Marziyeh Behmadi
The CSM40 137Cs source model is currently being used in clinical brachytherapy. According to the recommendations of task group No. 43 (TG-43) of the American Association of Physicists in Medicine, dosimetry parameters of brachytherapy sources should be determined by two independent investigators before their clinical use. The aim of this study was to determine the TG-43 dosimetry parameters for a medium-dose-rate CSM40 137Cs source. The determined dosimetric parameters included the air kerma strength, dose rate constant, radial dose function, and anisotropy function...
January 3, 2018: Radiological Physics and Technology
https://www.readbyqxmd.com/read/29298035/vacuum-ultraviolet-photovoltaic-detector
#11
Wei Zheng, Richeng Lin, Junxue Ran, Zhaojun Zhang, Xu Ji, Feng Huang
Over the past two decades, solar- and astro-physicists and material scientists have been researching and developing new-generation semiconductor-based vacuum ultraviolet (VUV) detectors with low power consumption and small size for replacing traditional heavy and high-energy-consuming microchannel-detection-systems, to study the formation and evolution of stars. However, the most desirable semiconductor-based VUV photovoltaic detector capable of achieving zero-power-consumption, has not yet been achieved. With high-crystallinity multi-step epitaxial grown AlN as VUV-absorbing layer for photogenerated carriers, and p-type graphene (with unexpected VUV transmittance > 96%) as transparent electrode to collect excited-holes, we constructed a heterojunction device with photovoltaic detection for VUV light...
January 3, 2018: ACS Nano
https://www.readbyqxmd.com/read/29296041/verification-of-dosimetric-commissioning-accuracy-of-intensity-modulated-radiation-therapy-and-volumetric-modulated-arc-therapy-delivery-using-task-group-119-guidelines
#12
Karunakaran Kaviarasu, N Arunai Nambi Raj, Misba Hamid, A Ananda Giri Babu, Lingampally Sreenivas, Kammari Krishna Murthy
Aim: The purpose of this study is to verify the accuracy of the commissioning of intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) based on the recommendation of the American Association of Physicists in Medicine Task Group 119 (TG-119). Materials and Methods: TG-119 proposes a set of clinical test cases to verify the accuracy of IMRT planning and delivery system. For these test cases, we generated two sets of treatment plans, the first plan using 7-9 IMRT fields and a second plan utilizing two-arc VMAT technique for both 6 MV and 15 MV photon beams...
October 2017: Journal of Medical Physics
https://www.readbyqxmd.com/read/29282089/evaluation-of-a-software-module-for-adaptive-treatment-planning-and-re-irradiation
#13
Anne Richter, Stefan Weick, Thomas Krieger, Florian Exner, Sonja Kellner, Bülent Polat, Michael Flentje
BACKGROUND: The aim of this work is to validate the Dynamic Planning Module in terms of usability and acceptance in the treatment planning workflow. METHODS: The Dynamic Planning Module was used for decision making whether a plan adaptation was necessary within one course of radiation therapy. The Module was also used for patients scheduled for re-irradiation to estimate the dose in the pretreated region and calculate the accumulated dose to critical organs at risk...
December 28, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29275899/analysis-of-the-treatment-plan-evaluation-process-in-radiotherapy-through-eye-tracking
#14
A Kyroudi, K Petersson, M Ozsahin, J Bourhis, F Bochud, R Moeckli
BACKGROUND AND PURPOSE: Treatment plan evaluation is a clinical decision-making problem that involves visual search and analysis in a contextually rich environment, including delineated structures and isodose lines superposed on CT data. It is a two-step process that includes visual analysis and clinical reasoning. In this work, we used eye tracking methods to gain more knowledge about the treatment plan evaluation process in radiation therapy. MATERIALS AND METHODS: Dose distributions on a single transverse slice of ten prostate cancer treatment plans were presented to eight decision makers...
December 21, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/29262375/physical-mechanisms-driving-cell-sorting-in-hydra
#15
Olivier Cochet-Escartin, Tiffany T Locke, Winnie H Shi, Robert E Steele, Eva-Maria S Collins
Cell sorting, whereby a heterogeneous cell mixture organizes into distinct tissues, is a fundamental patterning process in development. Hydra is a powerful model system for carrying out studies of cell sorting in three dimensions, because of its unique ability to regenerate after complete dissociation into individual cells. The physicists Alfred Gierer and Hans Meinhardt recognized Hydra's self-organizing properties more than 40 years ago. However, what drives cell sorting during regeneration of Hydra from cell aggregates is still debated...
December 19, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/29251624/hydrodynamics-of-electrons-in-graphene
#16
Andrew Lucas, Kin Chung Fong
Generic interacting many-body quantum systems are believed to behave as classical fluids on long time and length scales. Due to rapid progress in growing exceptionally pure crystals, we are now able to experimentally observe this collective motion of electrons in solid-state systems, including graphene. We present a review of recent progress in understanding the hydrodynamic limit of electronic motion in graphene, written for physicists from diverse communities. We begin by discussing the ``phase diagram" of graphene, and the inevitable presence of impurities and phonons in experimental systems...
December 18, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29226851/main-problems-and-suggested-solutions-for-improving-radiation-protection-in-medicine-in-ibero-american-countries-summary-of-an-international-conference-held-in-madrid-2016
#17
Eliseo Vano, Pablo Jimenez, Raul Ramirez, Javier Zarzuela, Ana Maria Larcher, Eduardo Gallego, Santiago Gonzalez, Maria Del Rosario Perez
During the International Conference on Radiation Protection in Medicine held in Bonn in 2012, several areas for improvement were identified, including specific actions related with justification, optimization, role of manufacturers, radiation protection education and training, strategic research, data collection on medical and occupational exposures, prevention of incidents and accidents, radiation safety culture, risk-benefit dialogue and implementation of the radiation safety standards. The outcomes of the Bonn Conference were summarized in the so-called 'Bonn Call for Action', identifying 10 priority actions to enhance RP in medicine...
December 11, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/29223507/limitations-in-learning-how-treatment-verifications-fail-and-what-to-do-about-it
#18
Susan Richardson, Bruce Thomadsen
PURPOSE: The purposes of this study were: to provide dialog on why classic incident learning systems have been insufficient for patient safety improvements, discuss failures in treatment verification, and to provide context to the reasons and lessons that can be learned from these failures. METHODS AND MATERIALS: Historically, incident learning in brachytherapy is performed via database mining which might include reading of event reports and incidents followed by incorporating verification procedures to prevent similar incidents...
December 6, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29221890/22nd-international-conference-on-medical-physics-2016-bangkok-thailand-medical-physics-propelling-global-health
#19
EDITORIAL
Virginia Tsapaki, Geoff Ibbott, Anchali Krisanachinda, Kwan-Hoong Ng, Tae-Suk Suh, Slavik Tabakov, John Damilakis
As medical technology evolves and patient needs increase, the need for well-trained and highly professional medical physicists (MPs) becomes even more urgent. The roles and responsibilities of MPs in various departments within the hospital are diverse and demanding. It is obvious that training, continuing education and professional development of MPs have become essential. One of the ways for an MP to advance his or her knowledge is to participate in conferences and congresses. Last year, the 22nd International Conference of Medical Physics (ICMP 2016) took place in Bangkok, Thailand...
December 6, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/29219218/rotator-cuff-tendon-assessment-using-magic-angle-insensitive-3d-ultrashort-echo-time-cones-magnetization-transfer-ute-cones-mt-imaging-and-modeling-with-histological-correlation
#20
Yanchun Zhu, Xin Cheng, Yajun Ma, Jonathan H Wong, Yaoqin Xie, Jiang Du, Eric Y Chang
BACKGROUND: Rotator cuff tendons (RCTs) are challenging to image due to the "magic angle effect" and their short T2 . PURPOSE: To assess the degree of magic angle sensitivity of human RCTs and to utilize a 3D ultrashort echo time Cones sequence with magnetization transfer preparation (UTE-Cones-MT) and two-pool quantitative MT modeling with histological correlation. We hypothesized that MT parameters would be less sensitive to the magic angle compared with conventional T2 measurements...
December 8, 2017: Journal of Magnetic Resonance Imaging: JMRI
keyword
keyword
47923
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"