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https://www.readbyqxmd.com/read/28644913/supplement-2-for-the-2004-update-of-the-aapm-task-group-no-43-report-joint-recommendations-by-the-aapm-and-gec-estro
#1
Mark J Rivard, Facundo Ballester, Wayne M Butler, Larry A DeWerd, Geoffrey S Ibbott, Ali S Meigooni, Christopher S Melhus, Michael G Mitch, Ravinder Nath, Panagiotis Papagiannis
Since publication of the 2004 update to the American Association of Physicists in Medicine (AAPM) Task Group No. 43 Report (TG-43U1) and its 2007 supplement (TG-43U1S1), several new low-energy photon-emitting brachytherapy sources have become available. Many of these sources have satisfied the AAPM prerequisites for routine clinical purposes and are posted on the Brachytherapy Seed Registry managed jointly by the AAPM and the Imaging and Radiation Oncology Core Houston Quality Assurance Center (IROC Houston)...
June 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28643024/automatic-seed-picking-for-brachytherapy-postimplant-validation-with-3d-ct-images
#2
Guobin Zhang, Qiyuan Sun, Shan Jiang, Zhiyong Yang, Xiaodong Ma, Haisong Jiang
PURPOSE: Postimplant validation is an indispensable part in the brachytherapy technique. It provides the necessary feedback to ensure the quality of operation. The ability to pick implanted seed relates directly to the accuracy of validation. To address it, an automatic approach is proposed for picking implanted brachytherapy seeds in 3D CT images. METHODS: In order to pick seed configuration (location and orientation) efficiently, the approach starts with the segmentation of seed from CT images using a thresholding filter which based on gray-level histogram...
June 22, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28630886/review-of-the-current-status-of-radiation-protection-in-diagnostic-radiology-in-africa
#3
REVIEW
Wilbroad Muhogora, Madan M Rehani
The aim of this paper is to review the available published studies from African countries on patient doses and medical radiation protection and identify strengths, weaknesses, and challenges. Papers on radiation doses to patients published until 2016 pertaining to studies in African countries were reviewed. Radiography, interventional radiology, computed tomography (CT), and mammography modalities were covered. In radiography, the entrance surface air kerma values were below the established diagnostic reference levels (DRLs) provided by the International Atomic Energy Agency, European Commission, and National Council on Radiation Protection and Measurements...
July 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28615985/treatment-of-movement-disorders-with-focused-ultrasound
#4
REVIEW
Paul S Fishman, Victor Frenkel
Although the use of ultrasound as a potential therapeutic modality in the brain has been under study for several decades, relatively few neuroscientists or neurologists are familiar with this technology. Stereotactic brain lesioning had been widely used as a treatment for medically refractory patients with essential tremor (ET), Parkinson disease (PD), and dystonia but has been largely replaced by deep brain stimulation (DBS) surgery, with advantages both in safety and efficacy. However, DBS is associated with complications including intracerebral hemorrhage, infection, and hardware malfunction...
2017: Journal of Central Nervous System Disease
https://www.readbyqxmd.com/read/28576581/in-vivo-dosimetry-for-lung-radiotherapy-including-sbrt
#5
REVIEW
Boyd M C McCurdy, Peter M McCowan
SBRT for lung cancer is being rapidly adopted as a treatment option in modern radiotherapy centres. This treatment is one of the most complex in common clinical use, requiring significant expertise and resources. It delivers a high dose per fraction (typically ∼6-30Gy/fraction) over few fractions. The complexity and high dose delivered in only a few fractions make powerful arguments for the application of in vivo dosimetry methods for these treatments to enhance patient safety. In vivo dosimetry is a group of techniques with a common objective - to estimate the dose delivered to the patient through a direct measurement of the treatment beam(s)...
May 30, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28555878/correlation-between-a-2d-channelized-hotelling-observer-and-human-observers-in-a-low-contrast-detection-task-with-multi-slice-reading-in-ct
#6
Lifeng Yu, Baiyu Chen, James M Kofler, Christopher P Favazza, Shuai Leng, Matthew A Kupinski, Cynthia H McCollough
PURPOSE: Model observers have been successfully developed and used to assess the quality of static 2D CT images. However, radiologists typically read images by paging through multiple 2D slices (i.e. multi-slice reading). The purpose of this study was to correlate human and model observer performance in a low-contrast detection task performed using both 2D and multi-slice reading, and to determine if the 2D model observer still correlate well with human observer performance in multi-slice reading...
May 27, 2017: Medical Physics
https://www.readbyqxmd.com/read/28548315/aapm-medical-physics-practice-guideline-8-a-linear-accelerator-performance-tests
#7
Koren Smith, Peter Balter, John Duhon, Gerald A White, David L Vassy, Robin A Miller, Christopher F Serago, Lynne A Fairobent
PURPOSE: The purpose of this guideline is to provide a list of critical performance tests in order to assist the Qualified Medical Physicist (QMP) in establishing and maintaining a safe and effective quality assurance (QA) program. The performance tests on a linear accelerator (linac) should be selected to fit the clinical patterns of use of the accelerator and care should be given to perform tests which are relevant to detecting errors related to the specific use of the accelerator. METHODS: A risk assessment was performed on tests from current task group reports on linac QA to highlight those tests that are most effective at maintaining safety and quality for the patient...
May 26, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28500759/a-monte-carlo-model-for-mean-glandular-dose-evaluation-in-spot-compression-mammography
#8
Antonio Sarno, David R Dance, Ruben E van Engen, Kenneth C Young, Paolo Russo, Francesca Di Lillo, Giovanni Mettivier, Kristina Bliznakova, Baowei Fei, Ioannis Sechopoulos
PURPOSE: To characterize the dependence of normalized glandular dose (DgN) on various breast model and image acquisition parameters during spot compression mammography and other partial breast irradiation conditions, and evaluate alternative previously-proposed dose-related metrics for this breast imaging modality. METHODS: Using Monte Carlo simulations with both simple homogeneous breast models and patient-specific breasts, three different dose related metrics for spot compression mammography were compared: the standard DgN, the normalized glandular dose to only the directly irradiated portion of the breast (DgNv), and the DgN obtained by the product of the DgN for full field irradiation and the ratio of the mid-height area of the irradiated breast to the entire breast area (DgNM )...
May 13, 2017: Medical Physics
https://www.readbyqxmd.com/read/28499659/-spinal-stereotactic-body-radiotherapy-french-assessment-in-2016
#9
I Pougnet, E Jaegle, R Garcia, F Tessier, J C Faivre, G Louvel, E Gross, L Gonzague, M Benchalal, A Ducteil, S Supiot, D Autret, J B Clavier, X Mirabel, A Bellière, D Wdowczyk, S Heymann, I Barillot, B de La Lande, V Passerat, M P Sunyach, F Lipinski, D Thibouw, F Guichard, B Chauvet, J Thariat, A Arnaud
PURPOSE: Stereotactic body radiotherapy to vertebral column remains uncommon practice and only relevant in selected group of patients. The main objective of the study was to describe the current state of medical practices of stereotactic body radiotherapy to vertebral column in France in 2016 and to assess the diversity of practices to identify areas for improvement and establish a common database set for this technique. MATERIALS AND METHODS: A questionnaire was written with contribution of a medical physicist, a radiation oncologist, an information technologist and a radiotherapy resident...
May 9, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28497529/aapm-medical-physics-practice-guideline-6-a-performance-characteristics-of-radiation-dose-index-monitoring-systems
#10
Dustin A Gress, Renee L Dickinson, William D Erwin, David W Jordan, Robert J Kobistek, Donna M Stevens, Mark P Supanich, Jia Wang, Lynne A Fairobent
The American Association of Physicists in Medicine (AAPM) is a nonprofit professional society whose primary purposes are to advance the science, education and professional practice of medical physics. The AAPM has more than 8,000 members and is the principal organization of medical physicists in the United States. The AAPM will periodically define new practice guidelines for medical physics practice to help advance the science of medical physics and to improve the quality of service to patients throughout the United States...
May 12, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28464490/the-geographic-penetration-of-the-jacmp-and-the-benefits-of-aapm-membership-for-clinical-medical-physicists-worldwide
#11
EDITORIAL
Michael D Mills
No abstract text is available yet for this article.
May 2, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28462894/a-survey-of-residents-experience-with-patient-safety-and-quality-improvement-concepts-in-radiation-oncology
#12
Matthew B Spraker, Matthew Nyflot, Kristi Hendrickson, Eric Ford, Gabrielle Kane, Jing Zeng
PURPOSE: The safety and quality of radiation therapy have recently garnered increased attention in radiation oncology (RO). Although patient safety guidelines expect physicians and physicists to lead clinical safety and quality improvement (QI) programs, trainees' level of exposure to patient safety concepts during training is unknown. METHODS AND MATERIALS: We surveyed active medical and physics RO residents in North America in February 2016. Survey questions involved demographics and program characteristics, exposure to patient safety topics, and residents' attitude regarding their safety education...
December 1, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28412135/moving-beyond-quality-control-in-diagnostic-radiology-and-the-role-of-the-clinically-qualified-medical-physicist
#13
REVIEW
H Delis, K Christaki, B Healy, G Loreti, G L Poli, P Toroi, A Meghzifene
Quality control (QC), according to ISO definitions, represents the most basic level of quality. It is considered to be the snapshot of the performance or the characteristics of a product or service, in order to verify that it complies with the requirements. Although it is usually believed that "the role of medical physicists in Diagnostic Radiology is QC", this, not only limits the contribution of medical physicists, but is also no longer adequate to meet the needs of Diagnostic Radiology in terms of Quality...
April 12, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28410688/education-and-training-of-medical-physics-in-iran-the-past-the-present-and-the-future
#14
Seyed Rabi Mahdavi, Behrouz Rasuli, Azam Niroomand-Rad
PURPOSE: The aim of this study was to investigate the current status of education and training programs in medical physics in Iran. METHODS: A questionnaire was designed and sent to 274 IAMP (Iranian Association of Medical Physicists) members focusing on these two topics: the educational situation (course syllabus, number of faculty members, number of PhD and MSc students and sub-fields offered in the department) and the professional situation (work experience, workplaces of medical physicists, postgraduate degrees that were granted and the amount of therapy and imaging equipment)...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28402432/educational-outcomes-of-a-medical-physicist-program-over-the-past-10%C3%A2-years-in-japan
#15
Noriyuki Kadoya, Kumiko Karasawa, Iori Sumida, Hidetaka Arimura, Yasumasa Kakinohana, Shigeto Kabuki, Hajime Monzen, Teiji Nishio, Hiroki Shirato, Syogo Yamada
The promotion plan for the Platform of Human Resource Development for Cancer (Ganpro) was initiated by the Ministry of Education, Culture, Sports, Science and Technology of Japan in 2007, establishing a curriculum for medical physicists. In this study, we surveyed the educational outcomes of the medical physicist program over the past 10 years since the initiation of Ganpro. The Japan Society of Medical Physics mailing list was used to announce this survey. The questionnaire was created by members of the Japanese Board for Medical Physicist Qualification, and was intended for the collection of information regarding the characteristics and career paths of medical physics students...
April 11, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28397710/comparison-of-computed-tomography-shielding-design-methods-using-radshield
#16
Matthew C DeLorenzo, Kai Yang, Dee H Wu, Weiyuan Wang, Isaac B Rutel
PURPOSE: To comprehensively compare four computed tomography (CT) scanner shielding design methods using RadShield, a Java-based graphical user interface (GUI). METHODS: RadShield, a floor plan based GUI, was extended to calculate air kerma and barrier thickness using accepted methods from the National Council on Radiation Protection and Measurements (NCRP), the British Institute of Radiology, and a method using isodose maps, for spatially distributed points beyond user defined barriers...
April 11, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28397396/insight-gained-from-responses-to-surveys-on-reference-dosimetry-practices
#17
Bryan Muir, Wesley Culberson, Stephen Davis, Gwe-Ya Kim, Yimei Huang, Sung-Woo Lee, Jessica Lowenstein, Arman Sarfehnia, Jeffrey Siebers, Naresh Tolani
PURPOSE: To present the results and discuss potential insights gained through surveys on reference dosimetry practices. METHODS: Two surveys were sent to medical physicists to learn about the current state of reference dosimetry practices at radiation oncology clinics worldwide. A short survey designed to maximize response rate was made publicly available and distributed via the AAPM website and a medical physics list server. Another, much more involved survey, was sent to a smaller group of physicists to gain insight on detailed dosimetry practices...
April 11, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28367132/experts-and-novices-perception-of-ignorance-and-knowledge-in-different-research-disciplines-and-its-relation-to-belief-in-certainty-of-knowledge
#18
Isabelle Hansson, Sandra Buratti, Carl Martin Allwood
Assessments of the extent of knowledge in a domain can be important since non-identified lack of knowledge may lead to decisions that do not consider the effect of relevant factors. Two studies examined experts' and novices' perception of their own ignorance and knowledge out of everything there is to know within their own and other disciplines and their assessments of their discipline's, and other disciplines' knowledge of all there is to know in each discipline. In total 380 experts and 401 students from the disciplines of history, medicine, physics, and psychology participated...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28366572/development-of-a-quality-and-safety-competency-curriculum-for-radiation-oncology-residency-an-international-delphi-study
#19
Jenna Adleman, Caitlin Gillan, Amanda Caissie, Carol-Anne Davis, Brian Liszewski, Andrea McNiven, Meredith Giuliani
PURPOSE: To develop an entry-to-practice quality and safety competency profile for radiation oncology residency. METHODS AND MATERIALS: A comprehensive list of potential quality and safety competency items was generated from public and professional resources and interprofessional focus groups. Redundant or out-of-scope items were eliminated through investigator consensus. Remaining items were subjected to an international 2-round modified Delphi process involving experts in radiation oncology, radiation therapy, and medical physics...
February 14, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28328309/ibpro-a-novel-short-duration-teaching-course-in-advanced-physics-and-biology-underlying-cancer-radiotherapy
#20
Michael C Joiner, Monica W Tracey, Sara E Kacin, Jay W Burmeister
This article provides a summary and status report of the ongoing advanced education program IBPRO - Integrated course in Biology and Physics of Radiation Oncology. IBPRO is a five-year program funded by NCI. It addresses the recognized deficiency in the number of mentors available who have the required knowledge and skill to provide the teaching and training that is required for future radiation oncologists and researchers in radiation sciences. Each year, IBPRO brings together 50 attendees typically at assistant professor level and upwards, who are already qualified/certified radiation oncologists, medical physicists or biologists...
June 2017: Radiation Research
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