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https://www.readbyqxmd.com/read/29154759/radiation-exposure-in-pediatric-urology-patients-how-to-adhere-to%C3%A2-alara
#1
EDITORIAL
Michael C Ost
No abstract text is available yet for this article.
November 14, 2017: Journal of Urology
https://www.readbyqxmd.com/read/29134434/fluoroscopy-free-af-ablation-using-transesophageal-echocardiography-and-electroanatomical-mapping-technology
#2
Benjamin O'Brien, Damian C Balmforth, Ross J Hunter, Richard J Schilling
PURPOSE: Guidelines recommend that radiation exposure during AF catheter ablation procedures should be 'as low as reasonably achievable' (ALARA), particularly since many patients may have multiple procedures. Consequently, avoiding radiation exposure altogether must, if safe to do so, be the ultimate goal. The primary objective was to determine the feasibility and efficacy of fluoroscopy-free AF ablation compared to the fluoroscopy-assisted procedure. METHODS: Patients underwent AF ablation using commercially available technology with no routine pre-procedural imaging...
November 14, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29118787/radiation-exposure-during-neurointerventional-procedures-in-modern-biplane-angiographic-systems-a-single-site-experience
#3
Ameer E Hassan, Sophie Amelot
Background and Purpose: Per the ALARA principle, reducing the dose delivered to both patients and staff must be a priority for endovascular therapists, who should monitor their own practice. We evaluated patient exposure to radiation during common neurointerventions performed with a recent flat-panel detector angiographic system and compared our results with those of recently published studies. Methods: All consecutive patients who underwent a diagnostic cerebral angiography or intervention on 2 modern flat-panel detector angiographic biplane systems (Innova IGS 630, GE Healthcare, Chalfont St Giles, UK) from February to November 2015 were retrospectively analyzed...
October 2017: Interventional Neurology
https://www.readbyqxmd.com/read/29105050/knowledge-and-awareness-of-radiation-hazards-among-palestinian-radio-technologists
#4
Ahmed Hamarsheh, Ahmad Amro
This study investigated 94.4% of Palestinian radio technologists and the mean percentage of correct answers for knowledge and awareness questions was 26.4%. The percentage of correct answers for questions testing knowledge of the ALARA (As Low As Reasonably Achievable) principle and hormesis hypothesis was 66.5% and 17.2%, respectively. Radio technologists with education level higher than bachelor degree and < 5 years' work experience showed a significantly higher level of knowledge. The most radiosensitive organs were correctly identified as the lungs and stomach by 6...
October 30, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/29097926/advanced-functional-tumor-imaging-and-precision-nuclear-medicine-enabled-by-digital-pet-technologies
#5
REVIEW
Chadwick L Wright, Katherine Binzel, Jun Zhang, Michael V Knopp
The purpose of this article is to provide a brief overview of the background, basic principles, technological evolution, clinical capabilities, and future directions for functional tumor imaging as PET evolves from the conventional photomultiplier tube-based platform into a fully digital detector acquisition platform. The recent introduction of solid-state digital photon counting PET detector is the latest evolution of clinical PET which enables faster time-of-flight timing resolution that leads to more precise localization of the annihilation events and further contributes to reduction in partial volume and thus makes high definition and ultrahigh definition PET imaging feasible with current standard acquisition procedures...
2017: Contrast Media & Molecular Imaging
https://www.readbyqxmd.com/read/29069495/potential-effects-of-diagnostic-irradiation-from-computed-tomography-on-reproductive-system-and-general-protective-strategies
#6
Daryoush Fatehi, Ayoob Rostamzadeh
Currently, application of computed tomography (CT) increased in the diagnostic procedures. Hence, respecting to the unnecessary increase in the application of the CT-scans, it needs to prescribe radiological procedures from pelvic and lower abdomen with more caution. Furthermore, due to the unnecessary increasing application of CT-scan in the world, we believe that there is a need to revise, with more precision, for prescription of this radiological procedure. The panel recommended several measures to enhance and enforce radiation-dose optimization, particularly in collaboration with referring physicians...
October 24, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29044964/interventional-cardiologists-beware-and-be-aware-an-updated-report-of-radiation-induced-cutaneous-cancers
#7
John T Eagan, Carolynn T Jones, Gary S Roubin
We describe 5 years of follow-up of a previously reported case of disabling ionizing radiation (IR)-related cutaneous cancer in a high-volume interventional cardiologist. This case illustrates the cycle of exposure, disease, remission, and re-exposure that demonstrates the cause-and-effect relationship between radiation exposure and cutaneous cancer. Prior cautions for working in environments with radiation exposure emphasized strict adherence to the ALARA principle and called for improved radiation protection equipment...
October 16, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28990968/improvements-in-radiation-monitoring-trending
#8
Christopher Neil Passmore, Mirela Kirr
One of the main goals for Radiation Safety Professionals is to help maintain radiation worker doses below administrative control levels. In the radiation safety field there is an increasing recognition of the value of dosimetry-related data that can be used to enhance safety programs and regulatory compliance. Mining radiation dosimetry data and rendering results in the form of dashboards provides insights for the Radiation Safety Professionals that could help improve the radiological protection programs effectiveness, enhances quality, and reduces cost...
December 2017: Health Physics
https://www.readbyqxmd.com/read/28984431/what-do-we-know-about-alara-is-our-knowledge-sufficient-about-radiation-safety
#9
Ibrahim B Atci, Hakan Yilmaz, Veysel Antar, Nuriye G Ozdemir, Oguz Baran, Sila Sadillioglu, Mehmet Ozel, Okan Turk, Mehmet Yaman, Hakan Topacoglu
BACKGROUND: The aim of this study was to determine the knowledge of neurosurgeons and emergency physicians about ALARA (as low as reasonably achievable) and to gain awareness to them about this topic. METHODS: A multiple-choice survey comprising 17 questions was performed to 30 neurosurgeons and 70 emergency room doctors. RESULTS: Emergency medicine doctors, neurosurgeons, emergency medicine residents, neurosurgery residents and general practitioners participated in the survey...
December 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28983464/radiotherapy-dosing-for-locally-advanced-non-small-cell-lung-carcinoma-mtd-or-alara
#10
REVIEW
Nitin Ohri
Locally advanced non-small cell lung cancer (LA-NSCLC) is typically treated with thoracic radiotherapy, often in combination with cytotoxic chemotherapy. Despite tremendous advances in the evaluation, treatment techniques, and supportive care measures provided to LA-NSCLC patients, local disease progression and distant metastases frequently develop following definitive therapy. A recent landmark randomized trial demonstrated that radiotherapy dose escalation may reduce survival rates, highlighting our poor understanding of the effects of thoracic radiotherapy for LA-NSCLC...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28938858/evaluating-doses-of-multi-slice-ct-in-brain-examinations-using-various-methods
#11
Hung-Chih Lin, Te-Jen Lai, Hsien-Chun Tseng, Cheng-Hsun Lin, Yen-Ling Tseng, Chien-Yi Chen
PURPOSE: The effective dose (HE) and organ or tissue equivalent dose (HT) of a Rando phantom undergoing two brain computed tomography (CT) examination protocols were evaluated using thermoluminescent dosimeters (TLD-100H) and dose length product (DLP) methods. MATERIALS AND METHODS: TLDs were inserted into the correlated positions of an organ or tissue of Rando phantom, such as thyroid, brain, and salivary gland, using (A) axial scan: scanning the maxillae ranging from external auditory meatus to the parietal bone, and (B) helical scan: scanning from the mandible to the parietal bone...
September 22, 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/28900827/lifetime-radiation-exposure-in-patients-with-recurrent-nephrolithiasis
#12
REVIEW
Mohamed A Elkoushy, Sero Andonian
Patients presenting with nephrolithiasis often undergo repeated imaging studies before, during, and after management. Considering the significant risk of stone recurrence in primary stone-formers, repeated imaging studies are not uncommon. Cumulative effects of ionizing radiation exposure from various imaging studies could potentially increase the risk for developing cataracts and solid malignancies in urolithiasis patients. Therefore, practitioners planning or performing imaging studies with ionizing radiation are compelled to keep radiation exposure to humans and the environment as low as possible, thus strictly adhering to the ALARA (As Low as Reasonably Achievable) principles...
September 12, 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28876597/radiation-exposure-during-infrarenal-endovascular-aortic-aneurysm-repair
#13
A Ahmed, A Badawy, A Chaudhuri
BACKGROUND: Endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms exposes patients and healthcare professions to the deterministic and stochastic effects of ionization radiation. The study aim was to determine our standard of radiation exposure in infrarenal EVARs and compare it against other published data and national guidelines. METHOD: A retrospective analysis of a prospectively collected database of patients undergoing EVARs was obtained. Radiation dose, fluoroscopy time, aneurysm size and patient characteristics were collected...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28735464/radiation-dose-reduction-in-thoracic-and-lumbar-spine-instrumentation-using-navigation-based-on-an-intraoperative-cone-beam-ct-imaging-system-a-prospective-randomized-clinical-trial
#14
Nathalie Pireau, Virginie Cordemans, Xavier Banse, Nadia Irda, Sébastien Lichtherte, Ludovic Kaminski
PURPOSE: Spine surgery still remains a challenge for every spine surgeon, aware of the potential serious outcomes of misplaced instrumentation. Though many studies have highlighted that using intraoperative cone beam CT imaging and navigation systems provides higher accuracy than conventional freehand methods for placement of pedicle screws in spine surgery, few studies are concerned about how to reduce radiation exposure for patients with the use of such technology. One of the main focuses of this study is based on the ALARA principle (as low as reasonably achievable)...
November 2017: European Spine Journal
https://www.readbyqxmd.com/read/28719979/prevalence-of-protective-shielding-utilization-for-radiation-dose-reduction-in-adult-patients-undergoing-body-scanning-using-computed-tomography
#15
Shoaib Safiullah, Roshan Patel, Brittany Uribe, Kyle Spradling, Chandana Lall, Lishi Zhang, Zhamshid Okhunov, Ralph V Clayman, Jaime Landman
PURPOSE: Ionizing radiation is implicated in nearly 2% of malignancies in the United States; radiation shields prevent unnecessary radiation exposure during medical imaging. Contemporary radiation shield utilization for adult patients in the United States is poorly defined. Therefore, we evaluated the prevalence of protective shielding utilization in adult patients undergoing CT scans in United States' hospitals. MATERIALS AND METHODS: An online survey was sent to established radiology departments randomly selected from the 2015 American Hospital Association Guide...
October 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28677509/therapy-of-cardiac-arrhythmias-in-children-an-emerging-role-of-electroanatomical-mapping-systems
#16
Casale Matteo, Mezzetti Maurizio, Tulino Viviana, Michele Scarano, Busacca Paolo, Dattilo Giuseppe
INTRODUCTION: Cardiac arrhythmias are challenging diseases in childhood. Most of them in pediatric subjects (90.2%) are atrioventricular reentrant tachycardias and atrioventricular nodal reentrant tachycardias. The standard 12-lead ECG is a highly accurate diagnostic tool but an invasive electrophysiological study is often required. The main concern about this kind of procedures is their invasive nature and the need of radiations, so antiarrhythmic agents are currently the first line therapy...
July 5, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28675867/the-lambert-beer-law-in-time-domain-form-and-its-application
#17
Volodymyr Mosorov
The majority of current radioisotope gauges utilize measurements of intensity for a chosen sampling time interval using a detector. Such an approach has several disadvantages: temporal resolution of the gauge is fixed and the accuracy of the measurements is not the same for different count rate. The solution can be the use of a stronger radioactive source, but it will be conflicted with ALARA (As Low As Reasonably Achievable) principle. Therefore, the article presents an alternative approach which is based on modified Lambert-Beer law...
June 27, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28674910/diagnostic-imaging-in-pediatric-thoracic-trauma
#18
Claudia Lucia Piccolo, Stefania Ianniello, Margherita Trinci, Michele Galluzzo, Michele Tonerini, Massimo Zeccolini, Giuseppe Guglielmi, Vittorio Miele
Thoracic trauma accounts for approximately 14% of blunt force traumatic deaths, second only to head injuries. Chest trauma can be blunt (90% of cases) or penetrating. In young patients, between 60 and 80% of chest injuries result from blunt trauma, with over half as a consequence of impact with motor vehicles, whereas in adolescents and adults, penetrating trauma has a statistically more prominent role. Pulmonary contusions and rib fractures are the most frequent injuries occurring. Chest X-ray is the first imaging modality of choice to identify patients presenting with life-threatening conditions (i...
July 4, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28640075/maximum-voltage-gradient-technique-for-optimization-of-ablation-for-typical-atrial-flutter-with-zero-fluoroscopy-approach
#19
MULTICENTER STUDY
Karol Deutsch, Janusz Śledź, Mariusz Mazij, Bartosz Ludwik, Michał Labus, Dariusz Karbarz, Bernadetta Pasicka, Michał Chrabąszcz, Arkadiusz Śledź, Monika Klank-Szafran, Laura Vitali-Sendoz, Tomasz Kameczura, Jerzy Śpikowski, Piotr Stec, Marek Ujda, Sebastian Stec
Radiofrequency catheter ablation (RFCA) is an established effective method for the treatment of typical cavo-tricuspid isthmus (CTI)-dependent atrial flutter (AFL). The introduction of 3-dimensional electro-anatomic systems enables RFCA without fluoroscopy (No-X-Ray [NXR]). The aim of this study was to evaluate the feasibility and effectiveness of CTI RFCA during implementation of the NXR approach and the maximum voltage-guided (MVG) technique for ablation of AFL.Data were obtained from prospective standardized multicenter ablation registry...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28571827/effect-on-overall-survival-of-locoregional-treatment-in-a-cohort-of-de-novo-metastatic-prostate-cancer-patients-a-single-institution-retrospective-analysis-from-the-royal-marsden-hospital
#20
Diletta Bianchini, David Lorente, Pasquale Rescigno, Zafeiris Zafeiriou, Elena Psychopaida, Hazel O'Sullivan, Mervyn Alaras, Michael Kolinsky, Semini Sumanasuriya, Mariane Sousa Fontes, Joaquin Mateo, Raquel Perez Lopez, Nina Tunariu, Nikolaos Fotiadis, Pardeep Kumar, Alison Tree, Nicholas Van As, Vincent Khoo, Chris Parker, Rosalind Eeles, Alan Thompson, David Dearnaley, Johann S de Bono
BACKGROUND: The optimal management of the primary tumor in metastatic at diagnosis (M1) prostate cancer (PCa) patients is not yet established. We retrospectively evaluated the effect of locoregional treatment (LRT) on overall survival (OS) hypothesizing that this could improve outcome through better local disease control and the induction of an antitumor immune response (abscopal effect). PATIENTS AND METHODS: M1 at diagnosis PCa patients referred to the Prostate Targeted Therapy Group at the Royal Marsden between June 2003 and December 2013 were identified...
October 2017: Clinical Genitourinary Cancer
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