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https://www.readbyqxmd.com/read/28428472/examination-of-a-method-to-determine-the-reference-region-for-calculating-the-specific-binding-ratio-in-dopamine-transporter-imaging
#1
Ayumi Watanabe, Yusuke Inoue, Yuji Asano, Kei Kikuchi, Hiroki Miyatake, Takanobu Tokushige
The specific binding ratio (SBR) was first reported by Tossici-Bolt et al. for quantitative indicators for dopamine transporter (DAT) imaging. It is defined as the ratio of the specific binding concentration of the striatum to the non-specific binding concentration of the whole brain other than the striatum. The non-specific binding concentration is calculated based on the region of interest (ROI), which is set 20 mm inside the outer contour, defined by a threshold technique. Tossici-Bolt et al. used a 50% threshold, but sometimes we couldn't define the ROI of non-specific binding concentration (reference region) and calculate SBR appropriately with a 50% threshold...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28402432/educational-outcomes-of-a-medical-physicist-program-over-the-past-10%C3%A2-years-in-japan
#2
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/28356198/prevalence-of-unanticipated-events-associated-with-mri-examinations-a-benchmark-for-mri-quality-safety-and-patient-experience
#3
Gelareh Sadigh, Kimberly E Applegate, Amit M Saindane
PURPOSE: To determine the prevalence of unanticipated events (UE) associated with MRI examinations in a multicenter academic radiology department. METHODS: UE reported by MRI technologists for examinations performed between June 2013 and November 2014 on 17 scanners in a university- and community-affiliated single health system were retrospectively reviewed. Events were categorized into the following categories: (1) problems with orders and scheduling; (2) scan delays; (3) unanticipated foreign bodies; (4) non-contrast-related patient events (eg, patient motion, discomfort, claustrophobia, need for sedation); (5) contrast-related patient events; and (6) technical acquisition issues...
March 26, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28350475/occupational-radiation-exposure-and-deaths-from-malignant-intracranial-neoplasms-of-the-brain-and-cns-in-u-s-radiologic-technologists-1983-2012
#4
Cari M Kitahara, Martha S Linet, Stephen Balter, Donald L Miller, Preetha Rajaraman, Elizabeth K Cahoon, Raquel Velazquez-Kronen, Steven L Simon, Mark P Little, Michele M Doody, Bruce H Alexander, Dale L Preston
OBJECTIVE: Childhood exposure to acute, high-dose radiation has consistently been associated with risk of benign and malignant intracranial tumors of the brain and CNS, but data on risks of adulthood exposure to protracted, low-to-moderate doses of radiation are limited. In a large cohort of radiologic technologists, we quantified the association between protracted, low-to-moderate doses of radiation and malignant intracranial tumor mortality. MATERIALS AND METHODS: The study population included 83,655 female and 26,642 male U...
March 28, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28338899/work-practices-and-radiation-exposure-among-male-radiologic-technologists-assisting-fluoroscopically-guided-interventional-procedures
#5
Jae Won Yun, Eun Shil Cha, Seulki Ko, Won Jin Lee
This study investigated occupational characteristics and radiation exposure among radiologic technologists assisting fluoroscopically guided interventional (FGI) procedures. A nationwide survey of radiologic technologists in South Korea was conducted. Among 8058 male respondents, 664 (8.2%) assisted FGI procedures. The survey data were linked with dosimetry data from the National Dose Registry. Most radiologic technologists assisting FGI procedures were 30-40 years old and employed by general hospitals. These technologists worked in closer proximity to patients during procedures, less frequently used shield screens, more commonly utilized protective devices, and less commonly wore badge dosemeters than the ones not assisting FGI procedures...
March 3, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28298577/trauma-imaging-a-literature-review
#6
Jason Heath Vela, Christopher Ira Wertz, Kimberly L Onstott, Joss R Wertz
PURPOSE: To inform radiologic technologists about which imaging modalities and examinations are best suited for evaluating specific anatomical structures in patients who have sustained a traumatic injury. METHODS: Two scholarly research databases were searched to identify articles focused on trauma imaging of the head, cervical spine, thorax, abdomen, and pelvis. Articles focused on trauma diagnosis were excluded. Thirty-two articles were selected for analysis. DISCUSSION: Physical examination and plain-film radiographs typically are used to assess nasal bone fracures...
January 2017: Radiologic Technology
https://www.readbyqxmd.com/read/28298497/anorexia-nervosa-and-bone-densitometry
#7
Havilah Adkins
Anorexia nervosa is a psychological disorder with extensive physical complications that require care and monitoring from a diverse team of health care professionals. Although it can affect people of various ages and both sexes, anorexia most frequently occurs in adolescent girls during a crucial period of skeletal development. This article presents an overview of anorexia nervosa, followed by focused discussions of its effects on bone development, treatment of bone loss, and the radiologic technologist's role in caring for anorexic patients...
March 2017: Radiologic Technology
https://www.readbyqxmd.com/read/28262972/reliability-of-self-reported-questionnaire-on-occupational-radiation-practices-among-diagnostic-radiologic-technologists
#8
Moon Jung Kim, Eun Shil Cha, Yousun Ko, Byung Chul Chun, Won Jin Lee
BACKGROUND: We aimed to assess the reliability of a self-reported questionnaire on occupational radiation practices among radiologic technologists. METHODS: We enrolled 941 participants who had repeatedly completed the questionnaire from the 2012-2013 radiologic technologists' health study in South Korea. We used percentage agreement, kappa statistics, and intraclass correlation coefficient (ICC) to assess the reliability of responses on work practices. RESULTS: Overall agreement for ever-never diagnostic radiation procedures was high (87...
March 6, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28177650/ct-angiography-of-suspected-peripheral-artery-disease-comparison-of-contrast-enhancement-in-the-lower-extremities-of-patients-undergoing-and-those-not-undergoing-hemodialysis
#9
Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Naoyuki Imada, Tomoyasu Sato, Tomokazu Okimoto, Kazuo Awai
OBJECTIVE: The objective of our study was to compare contrast enhancement on CT angiography (CTA) images of the lower extremity in patients with suspected peripheral artery disease who did not undergo hemodialysis (HD) and patients who were scanned before or after HD. MATERIALS AND METHODS: We divided 287 consecutive patients who underwent CTA of the lower extremity on a 64-MDCT scanner into three groups: group 1 patients (n = 151) were not dependent on HD, group 2 patients (n = 70) were dependent on HD and underwent HD less than 24 hours after CTA, and group 3 (n = 66) were dependent on HD and underwent HD less than 24 hours before CTA...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28111398/survey-of-exposure-dose-during-percutaneous-coronary-intervention-for-chronic-total-occlusion
#10
Tomokazu Sakano, Tatsushi Iwamoto, Takuya Kuribara, Hajime Sakamoto, Osamu Tajima, Yasuatu Hamano, Masayuki Maruyama, Tatsuya Kikuchi, Atsuko Tsukamoto, Kyouichi Kato
During percutaneous coronary intervention (PCI) for chronic total occlusion (CTO), longer fluoroscopic time as compared with PCI for non-CTO lesions may cause skin injury by increased radiation. We have performed a multi-center observational study comparing the exposed dose during the PCI of CTO (CTO group) and during the PCI of non-CTO lesions (non-CTO group). Exposure doses were assessed in 313 patients with CTO and 3,310 patients with non-CTO lesions. Total fluoroscopy time (59.0 ±35.5 vs 26.8 ±18.8 min, p<0...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28104315/implementing-a-structured-reporting-initiative-using-a-collaborative-multistep-approach
#11
Shlomit Goldberg-Stein, William R Walter, E Stephen Amis, Meir H Scheinfeld
PURPOSE: To describe the successful implementation of a structured reporting initiative in a large urban academic radiology department. METHODS: We describe our process, compromises, and top 10 lessons learned in overhauling traditional reporting practices and comprehensively implementing structured reporting at our institution. To achieve our goals, we took deliberate steps toward consensus building, undertook multistep template refinement, and achieved close collaboration with the technical staff, department coders, and hospital information technologists...
December 15, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28094231/improving-efficiency-using-time-driven-activity-based-costing%C3%A2-methodology
#12
Laura C Tibor, Stacy R Schultz, Ronald Menaker, Bradley D Weber, Jay Ness, Paula Smith, Phillip M Young
PURPOSE: The aim of this study was to increase efficiency in MR enterography using a time-driven activity-based costing methodology. METHODS: In February 2015, a multidisciplinary team was formed to identify the personnel, equipment, space, and supply costs of providing outpatient MR enterography. The team mapped the current state, completed observations, performed timings, and calculated costs associated with each element of the process. The team used Pareto charts to understand the highest cost and most time-consuming activities, brainstormed opportunities, and assessed impact...
March 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28050717/improving-patient-safety-avoiding-unread-imaging-exams-in-the-national-va-enterprise-electronic-health-record
#13
Sarah Bastawrous, Benjamin Carney
In the current digital and filmless age of radiology, rates of unread radiology exams remain low, however, may still exist in unique environments. Veterans Affairs (VA) health care systems may experience higher rates of unread exams due to coexistence of Veterans Health Information Systems and Technology Architecture (VistA) imaging and commercial picture archiving and communication systems (PACS). The purpose of this patient safety initiative was to identify any unread exams and causes leading to unread exams...
January 3, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28048307/mo-c-brb-02-the-physicists-leadership-role-in-academic-radiology-the-chair-s-perspective
#14
R Arenson
With the profound changes currently occurring in medicine, the role of the medical physicist cannot stagnate, but must evolve to meet the challenges and opportunities that are presented. Medical physicists must understand these changes and establish themselves not only as relevant but as leaders in this new environment. We must increase our presence in clinical settings such as tumor boards, patient rounds, and the development of new diagnosis, imaging, and treatment techniques. By establishing ourselves as competent scientists, we can and must participate in the development of technologies through research, teaching, and clinical implementation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048175/su-f-p-04-implementation-of-dose-monitoring-software-successes-and-pitfalls
#15
J Och
PURPOSE: to successfully install a dose monitoring software (DMS) application to assist in CT protocol and dose management. METHODS: Upon selecting the DMS, we began our implementation of the application. A working group composed of Medical Physics, Radiology Administration, Information Technology, and CT technologists was formed. On-site training in the application was supplied by the vendor. The decision was made to apply the process for all the CT protocols on all platforms at all facilities...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047160/su-c-209-06-improving-x-ray-imaging-with-computer-vision-and-augmented-reality
#16
R D MacDougall, S Don, B Scherrer
PURPOSE: To determine the feasibility of using a computer vision algorithm and augmented reality interface to reduce repeat rates and improve consistency of image quality and patient exposure in general radiography. METHODS: A prototype device, designed for use with commercially available hardware (Microsoft Kinect 2.0) capable of depth sensing and high resolution/frame rate video, was mounted to the x-ray tube housing as part of a Philips DigitalDiagnost digital radiography room...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047030/su-g-iep3-05-effects-of-image-receptor-technology-and-dose-reduction-software-on-radiation-dose-estimates-for-fluoroscopically-guided-interventional-fgi-procedures
#17
Z Merritt, J Dave, D Eschelman, C Gonsalves
PURPOSE: To investigate the effects of image receptor technology and dose reduction software on radiation dose estimates for most frequently performed fluoroscopically-guided interventional (FGI) procedures at a tertiary health care center. METHODS: IRB approval was obtained for retrospective analysis of FGI procedures performed in the interventional radiology suites between January-2011 and December-2015. This included procedures performed using image-intensifier (II) based systems which were subsequently replaced, flat-panel-detector (FPD) based systems which were later upgraded with ClarityIQ dose reduction software (Philips Healthcare) and relatively new FPD system already equipped with ClarityIQ...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046867/su-f-p-06-moving-from-computed-radiography-to-digital-radiography-a-collaborative-approach-to-improve-image-quality
#18
D Sandoval, D Valenti, T Bateman, V Norris, G Mlady, R Selwyn
PURPOSE: To bring together radiologists, technologists, and physicists to utilize post-processing techniques in digital radiography (DR) in order to optimize image acquisition and improve image quality. METHODS: Sub-optimal images acquired on a new General Electric (GE) DR system were flagged for follow-up by radiologists and reviewed by technologists and medical physicists. Various exam types from adult musculoskeletal (n=35), adult chest (n=4), and pediatric (n=7) were chosen for review...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046849/mo-de-bra-01-flipped-physics-courses-within-a-radiologic-technologist-program-video-production-and-long-term-outcomes
#19
T Oshiro, M Donaghy, A Slechta
PURPOSE: To determine if the flipped class format has an effect on examination results for a radiologic technologist (RT) program and discuss benefits from creating video resources. METHODS: From 2001-2015, students had taken both a radiological physics and quality control (QC) class as a part of their didactic training. In 2005/2006, the creation of videos of didactic lectures and QC test demonstrations allowed for a flip where content was studied at home while exercises and reviews were done in-class...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046224/su-f-i-40-impact-of-scan-length-on-patient-dose-in-abdomen-pelvis-ct-diagnosis
#20
I Park, J Song, K Kim
PURPOSE: To analysis the impact of scan length on patient doses in abdomen/pelvis CT diagnosis of each hospital. METHODS: Scan length of 7 hospitals from abdomen/pelvis CT diagnosis was surveyed in Korea. Surveyed scan lengths were additional distance above diaphragm and distance below pubic symphysis except for standard scan range between diaphragm and pubic symphysis. Patient dose was estimated for adult male and female according to scan length of each hospital...
June 2016: Medical Physics
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