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medical physicist

Martin A Ebert, Georgia K B Halkett, Melissa Berg, David Cutt, Michael Davis, Desley Hegney, Michael House, Michele Krawiec, Rachel Kearvell, Leanne Lester, Sharon Maresse, Peter McLoone, Jan McKay
As part of a study of the radiation oncology workforce, radiation oncology medical physicists (ROMPs) who had worked in Australia were surveyed regarding their attitudes to participating in research. Responses from 88 ROMPs were available for analysis, representing a broad mix of employment situations and research experience. Greater than 70% of ROMPs described their involvement in research as "liking it" or "loving it", with associated identified benefits including skills development, job satisfaction and career progression...
November 29, 2016: Australasian Physical & Engineering Sciences in Medicine
Kerri A Van Arnem, David P Supinski, Jonathan E Tucker, Shawn Varney
BACKGROUND: Trauma patients sustaining blunt injuries are exposed to multiple radiologic studies. Evidence indicates that the risk of cancer from exposure to ionizing radiation rises in direct proportion to the cumulative effective dose (CED) received. The purpose of this study is to quantify the amount of ionizing radiation accumulated when arriving directly from point of injury to San Antonio Military Medical Center (SAMMC), a level I trauma center, compared with those transferred from other facilities...
September 13, 2016: American Journal of Emergency Medicine
William F Sensakovic
No abstract text is available yet for this article.
October 4, 2016: Journal of the American College of Radiology: JACR
C S Moore, T J Wood, G Avery, S Balcam, L Needler, H Joshi, J R Saunderson, A W Beavis
The use of three physical image quality metrics, signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and mean effective noise equivalent quanta (eNEQm) have recently been examined by our group for their appropriateness in the calibration of an automatic exposure control (AEC) device for chest radiography with an Agfa computed radiography (CR) imaging system. This study uses the same methodology but investigates AEC calibration for abdomen, pelvis and spine CR imaging. AEC calibration curves were derived using a simple uniform phantom (equivalent to 20 cm water) to ensure each metric was held constant across the tube voltage range...
October 7, 2016: Physics in Medicine and Biology
Jean-Pierre Bissonnette, Michael Milosevic, Marco Carlone, Kyle E Malkoske
No abstract text is available yet for this article.
2016: Journal of Applied Clinical Medical Physics
Matthew C DeLorenzo, Dee H Wu, Kai Yang, Isaac B Rutel
The purpose of this study was to introduce and describe the development of RadShield, a Java-based graphical user interface (GUI), which provides a base design that uniquely performs thorough, spatially distributed calculations at many points and reports the maximum air-kerma rate and barrier thickness for each barrier pursuant to NCRP Report 147 methodology. Semiautomated shielding design calculations are validated by two approaches: a geometry-based approach and a manual approach. A series of geometry-based equations were derived giv-ing the maximum air-kerma rate magnitude and location through a first derivative root finding approach...
2016: Journal of Applied Clinical Medical Physics
Arpan V Prabhu, David R Hansberry, Nitin Agarwal, David A Clump, Dwight E Heron
PURPOSE: Physicians encourage patients to be informed about their health care options, but much of the online health care-related resources can be beneficial only if patients are capable of comprehending it. This study's aim was to assess the readability level of online patient education resources for radiation oncology to conclude whether they meet the general public's health literacy needs as determined by the guidelines of the United States National Institutes of Health (NIH) and the American Medical Association (AMA)...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
Gabriella Captur, Peter Gatehouse, Kathryn E Keenan, Friso G Heslinga, Ruediger Bruehl, Marcel Prothmann, Martin J Graves, Richard J Eames, Camilla Torlasco, Giulia Benedetti, Jacqueline Donovan, Bernd Ittermann, Redha Boubertakh, Andrew Bathgate, Celine Royet, Wenjie Pang, Reza Nezafat, Michael Salerno, Peter Kellman, James C Moon
BACKGROUND: T1 mapping and extracellular volume (ECV) have the potential to guide patient care and serve as surrogate end-points in clinical trials, but measurements differ between cardiovascular magnetic resonance (CMR) scanners and pulse sequences. To help deliver T1 mapping to global clinical care, we developed a phantom-based quality assurance (QA) system for verification of measurement stability over time at individual sites, with further aims of generalization of results across sites, vendor systems, software versions and imaging sequences...
September 22, 2016: Journal of Cardiovascular Magnetic Resonance
Anton Mans, Danny Schuring, Mark P Arends, Cornelia A J M Vugts, Jochem W H Wolthaus, Heidi T Lotz, Marjan Admiraal, Rob J W Louwe, Michel C Öllers, Jeroen B van de Kamer
In 2010, the NCS (Netherlands Commission on Radiation Dosimetry) installed a subcommittee to develop guidelines for quality assurance and control for volumetric modulated arc therapy (VMAT) treatments. The report (published in 2015) has been written by Dutch medical physicists and has therefore, inevitably, a Dutch focus. This paper is a condensed version of these guidelines, the full report in English is freely available from the NCS website After describing the transition from IMRT to VMAT, the paper addresses machine quality assurance (QA) and treatment planning system (TPS) commissioning for VMAT...
October 7, 2016: Physics in Medicine and Biology
Qiongge Li, Maria F Chan
Over half of cancer patients receive radiotherapy (RT) as partial or full cancer treatment. Daily quality assurance (QA) of RT in cancer treatment closely monitors the performance of the medical linear accelerator (Linac) and is critical for continuous improvement of patient safety and quality of care. Cumulative longitudinal QA measurements are valuable for understanding the behavior of the Linac and allow physicists to identify trends in the output and take preventive actions. In this study, artificial neural networks (ANNs) and autoregressive moving average (ARMA) time-series prediction modeling techniques were both applied to 5-year daily Linac QA data...
September 14, 2016: Annals of the New York Academy of Sciences
Ane Simony, Emil Jesper Hansen, Steen Bach Christensen, Leah Y Carreon, Mikkel Osterheden Andersen
PURPOSE: To report the incidence of cancer in a cohort of adolescent idiopathic scoliosis (AIS) patients treated 25 years previously. METHODS: 215 consecutive AIS patients treated between 1983 and 1990 were identified and requested to return for clinical and radiographic examination. The incidence of cancer was determined through chart review and follow-up interviews. Using the original radiographic log file that included patient position, mAs, kV and the total number of X-rays taken, a radiation physicist calculated the total radiation dose during treatment and follow-up adjusted for BMI and sex...
October 2016: European Spine Journal
Tamader Y Al-Rammah
BACKGROUND: The radiation dose delivered from computed tomography (CT) scanning and the risks associated with ionising radiation are major concerns in paediatric imaging. Compared to adults, children have increased organ sensitivity and a longer expected lifetime in which cancer may develop. Therefore, it is important to investigate the awareness of paediatricians (referring physicians) regarding radiation doses and the associated risks. METHODS: A multiple-choice survey was distributed among paediatricians in 8 hospitals in Riyadh, the capital of Saudi Arabia...
2016: Italian Journal of Pediatrics
Diana Paez, Amalia Peix, Pilar Orellana, Joao Vitola, Fernando Mut, Claudia Gutiérrez, Crosby Plaza, Tarik Becic, Maurizio Dondi, Enrique Estrada
The burden of cardiovascular diseases (CVDs) in the world is ever growing. They represent the first cause of death worldwide and in Latin America. Nuclear cardiology has a well-established role in the management of patient with CVDs and is being increasingly integrated into the healthcare systems in the region. However, there remains variability as to the infrastructure available across the countries, in terms of existing technology, radiopharmaceuticals, and human resources. The approximate number of gamma (γ) cameras in the region is 1348, with an average of 2...
August 29, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Leonardo Carmona Reimann, Beatriz Amendola
The first international ecancer conference on oncology and radiotherapy was held in Santiago de Chile on 6 and 7 May 2016. It was chaired by Dr Beatriz Amendola, Professor Gordon McVie and Professor Umberto Veronesi. Specialists from Europe and America were invited as guest lecturers. Over 300 people are attended the conference from all areas of oncology, doctors, physicists, medical technologists, nurses, residents, students, social workers, journalists, pharmaceutical chemists, from all over the country and abroad, including India...
2016: Ecancermedicalscience
R Mösges
Georg Schlöndorff (1931-2011) developed the idea of computer-assisted surgery (CAS) during his time as professor and chairman of the Department of Otorhinolaryngology at the Medical Faculty of the University of Aachen, Germany. In close cooperation with engineers and physicists, he succeeded in translating this concept into a functional prototype that was applied in live surgery in the operating theatre. The first intervention performed with this image-guided navigation system was a skull base surgical procedure 1987...
September 2016: HNO
J Dubeau, B E Heinmiller, M Corrigan
There is the possibility for a worker at a nuclear installation, such as a nuclear power reactor, a fuel production facility or a medical facility, to come in contact with radioactive contaminants. When such an event occurs, the first order of business is to care for the worker by promptly initiating a decontamination process. Usually, the radiation protection personnel performs a G-M pancake probe measurement of the contamination in situ and collects part or all of the radioactive contamination for further laboratory analysis...
July 29, 2016: Radiation Protection Dosimetry
Niloy Ranjan Datta, Shaka Khan, Dietmar Marder, Daniel Zwahlen, Stephan Bodis
PURPOSE: The purpose of this study was to evaluate the present status of radiotherapy infrastructure and human resources in Switzerland and compute projections for 2020. MATERIALS AND METHODS: The European Society of Therapeutic Radiation Oncology "Quantification of Radiation Therapy Infrastructure and Staffing" guidelines (ESTRO-QUARTS) and those of the International Atomic Energy Agency (IAEA) were applied to estimate the requirements for teleradiotherapy (TRT) units, radiation oncologists (RO), medical physicists (MP) and radiotherapy technologists (RTT)...
September 2016: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
Daniel C Pavord, Steven Birnbaum, Douglas Bocuzzi, Steven DeBoer, D Jay Freedman, Michael Schell, Steven Sutlief
The goal of this report is to provide a framework from which an institution can develop a competency and credentialing program. It is not intended to be adopted as written, but rather as a list of suggestions from which the institution develops their program. A clear distinction should be made between the initial evaluation of the competency of new staff (credentialing) and the ongoing verification of the competency of existing staff. Furthermore, whenever new technologies are imple-mented, the entire staff would be subject to the credentialing process...
2016: Journal of Applied Clinical Medical Physics
Wojciech Bulski, Paweł Kukołowicz, Witold Skrzyński
This paper presents the situation of the profession of medical physicists in Poland. The official recognition of the profession of medical physicist in Polish legislation was in 2002. In recent years, more and more Universities which have Physics Faculties introduce a medical physics specialty. At present, there are about 15 Universities which offer such programmes. These Universities are able to graduate about 150 medical physicists per year. In 2002, the Ministry of Health introduced a programme of postgraduate specialization in medical physics along the same rules employed in the specialization of physicians in various branches of medicine...
July 2016: Physica Medica: PM
Gary A Ezzell
No abstract text is available yet for this article.
July 2016: Medical Physics
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