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https://www.readbyqxmd.com/read/28722314/prospective-motion-correction-using-coil-mounted-cameras-cross-calibration-considerations
#1
Julian Maclaren, Murat Aksoy, Melvyn B Ooi, Benjamin Zahneisen, Roland Bammer
PURPOSE: Optical prospective motion correction substantially reduces sensitivity to motion in neuroimaging of human subjects. However, a major barrier to clinical deployment has been the time-consuming cross-calibration between the camera and MRI scanner reference frames. This work addresses this challenge. METHODS: A single camera was mounted onto the head coil for tracking head motion. Two new methods were developed: (1) a rapid calibration method for camera-to-scanner cross-calibration using a custom-made tool incorporating wireless active markers, and (2) a calibration adjustment method to compensate for table motion between scans...
July 19, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28711210/routine-dual-energy-computed-tomography-scanning-of-the-neck-in-clinical-practice-a-single-institution-experience
#2
REVIEW
Almudena Pérez-Lara, Mark Levental, Lorne Rosenbloom, Gary Wing, Reza Forghani
There is increasing use and popularity of dual-energy computed tomography (DECT) in many subspecialties in radiology. This article reviews the practical workflow implications of routine DECT scanning based on the experience at a single institution where a large percentage of elective neck CTs are acquired in DECT mode. The article reviews factors both on the production (technologist) and on the interpretation (radiologist) side, focusing on challenges posed and potential solutions for seamless workflow implementation...
August 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/28706751/development-and-implementation-of-a-coagulation-factor-testing-method-utilizing-autoverification-in-a-high-volume-clinical-reference-laboratory-environment
#3
Paul W Riley, Benoit Gallea, Andre Valcour
BACKGROUND: Testing coagulation factor activities requires that multiple dilutions be assayed and analyzed to produce a single result. The slope of the line created by plotting measured factor concentration against sample dilution is evaluated to discern the presence of inhibitors giving rise to nonparallelism. Moreover, samples producing results on initial dilution falling outside the analytic measurement range of the assay must be tested at additional dilutions to produce reportable results...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28705527/reducing-stat-portable-chest-radiograph-turnaround-times-a-pilot-study
#4
REVIEW
Pratik Rachh, Alexa O Levey, Andrew Lemmon, Aurora Marinescu, William F Auffermann, Daniel Haycook, Eugene A Berkowitz
BACKGROUND: Our health system orders a high number of STAT priority portable chest radiographs (62%) compared to Routine (35%) and Today (3%). Retrospective chart review of 1000 chest radiographs ordered with the STAT priority revealed that 38% of studies did not indicate clinical urgency. Given the high number or STAT priority portable chest radiographs ordered, prioritizing acquisition and interpretation of true STATs has become challenging for technologists and radiologists, leading to process inefficiencies, long turnaround times (TATs), communication failures, and patient-safety errors...
June 5, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28701894/volume-measurement-by-diffusion-weighted-imaging-in-cervical-cancer
#5
Shinya Fujii, Naoki Iwata, Chie Inoue, Naoko Mukuda, Takeru Fukunaga, Toshihide Ogawa
BACKGROUND: The aim of this paper was to evaluate the validity of tumor volume measurement using diffusion-weighted (DW) imaging in cervical cancer. METHODS: In this retrospective study, 22 patients, who underwent preoperative 3.0 T MR examinations with DW imaging were evaluated. Tumor volume measurement by oblique axial (short axis to the uterine cervix) T2-weighted imaging was performed by manually outlining the tumor on the monitor. The area of tumor in each slice was multiplied by the slice profile (slice thickness plus intersection gap), and the total tumor volume was calculated by summation of these obtained volumes...
June 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28698185/age-at-menarche-and-late-adolescent-adiposity-associated-with-mammographic-density-on-processed-digital-mammograms-in-24-840-women
#6
Stacey E Alexeeff, Nnaemeka Odo, Jafi A Lipson, Ninah Achacoso, Joseph H Rothstein, Martin J Yaffe, Rhea Y Liang, Luana Acton, Valerie McGuire, Alice S Whitmore, Daniel L Rubin, Weiva Sieh, Laurel A Habel
BACKGROUND: High mammographic density is strongly associated with increased breast cancer risk. Some, but not all, risk factors for breast cancer are also associated with higher mammographic density. METHODS: The study cohort (N=24,840) was drawn from the Research Program in Genes, Environment and Health of Kaiser Permanente Northern California and included non-Hispanic white females aged 40-74 years with a full-field digital mammogram (FFDM). Percent density (PD) and dense area (DA) were measured by a radiological technologist using Cumulus...
July 11, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28685191/stomach-frame-count-based-attenuation-correction-of-dynamic-posterior-view-gastric-emptying-scintigraphy-with-continuous-acquisition-in-children
#7
Xinhua Cao, Xiaoyin Xu, Laura Drubach, Frederic H Fahey
BACKGROUND: When performing dynamic gastric emptying scintigraphy with continuous acquisition in children, a single posterior view acquisition is preferred because it allows the young patient to more easily interact with a parent or technologist even though this method tends toward overestimating gastric emptying. OBJECTIVES: The objective of our study was to develop a new attenuation correction (AC) method to improve the accuracy of the time activity curve and the measurement of residual gastric emptying from 1-h posterior images of gastric emptying scintigraphy with continuous acquisition...
July 6, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28684054/usage-of-an-electronic-database-and-checklist-system-for-improvement-in-magnetic-resonance-imaging-acquisition
#8
Juan E Small, Laura Semine, Jaclyn Therrien, Patricia Doyle, Lorraine Kelly, Robert Marquis, Curtis W Bakal
PURPOSE: To determine whether implementation of an easily accessible electronic database promotes significant reporting of magnetic resonance imaging (MRI) acquisition errors. Additionally, we wanted to see if analysis of the error reports could be used to create a comprehensive checklist to avoid the most common errors. METHODS: A new, simple, and efficient electronic database reporting system was written in-house and implemented at our institution. Over the course of 4 months, the use of this database enabled collection and analysis of sufficient data for trend analysis...
May 20, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28676054/a-qualitative-analysis-of-the-effectiveness-of-telehealthcare-devices-i-are-they-meeting-the-needs-of-end-users
#9
Natasha C Campling, David G Pitts, Paul V Knight, Richard Aspinall
BACKGROUND: There are many telehealthcare devices currently available ranging from personal alarms, automated pill dispensers and fall detectors through to monitoring devices for blood sugar, blood pressure and heart rate. Many devices remain unused once acquired or shortly after a period of initial use. METHODS: The study used a qualitative design involving focus groups and interviews. End users' opinions of telehealthcare devices were examined through focus groups along with the views of market experts and key supply chain players through telephone interviews to ascertain their views on the devices...
July 4, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28662850/patient-dose-monitoring-systems-a-new-way-of-managing-patient-dose-and-quality-in-the-radiology-department
#10
N Fitousi
PURPOSE: Due to the upcoming European Directive (2013/59/EURATOM) and the increased focus on patient safety in international guidelines and regulations, Patient Dose Monitoring Systems, also called Dose Management Systems (DMS), are introduced in medical imaging departments. This article focusses on the requirements for a DMS, its benefits and the necessary implementation steps. METHOD: The implementation of a DMS can be perceived as a lengthy, yet worthy, procedure: users have to select the appropriate system for their applications, prepare data collection, validate, perform configuration, and start using the results in quality improvement projects...
June 26, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28662790/perioperative-nursing-management-of-donor-and-recipient-patients-undergoing-face-transplantation
#11
Nicole Sweeney, Kathryn Allen, Brooke Miller, Theresa Nolan, Kathleen Sheerin
Individuals with debilitating facial injuries and deformities have achieved significant improvement of aesthetic form and function after undergoing a face transplantation. The involvement of surgical technologists and perioperative nurses in the care of the recipient and donor plays a critical role in the success of these procedures. There are unique challenges that staff members may be presented with when caring for a donor and recipient undergoing a face transplantation, including less comfort with and knowledge of the surgical procedure and instrumentation, an increased amount of equipment and personnel in the OR, donor and recipient admission and discharge care, and increased shift length...
July 2017: AORN Journal
https://www.readbyqxmd.com/read/28649113/american-av-edgar-dale-and-the-information-age-classroom
#12
Charles R Acland
This article demonstrates how the influential scholar Edgar Dale, alongside a generation of educational technologists, helped build an essential place for AV materials and pedagogical methods in the American classroom. It also shows that, for decades, the Payne Fund philanthropy supported multimedia research agendas that shaped ideas about teaching and technology, far beyond involvement in their famed studies on motion pictures and children in the 1930s. With his writings and research programs, Dale advanced concepts of media experience and systematicity, which came to be understood as common sense to the information society...
2017: Technology and Culture
https://www.readbyqxmd.com/read/28637959/examination-of-dose-reduction-using-image-noise-reduction-technology-in-cardiovascular-x-ray-systems
#13
Takaya Saijo, Shigenobu Seguchi
The aim of this study is to establish radiation exposure dose reduction protocols during cardiac intervention by decreasing the entrance dose at flat panel detector (FPD) with image quality evaluations. For measuring entrance surface dose (ESD), we have used a Radical 9015 dosimeter (6 cc ion chamber) placed under 20 cm thick acrylic plates at the patient's entrance reference point. We performed an image quality assessment based on quantitative as well as visual evaluation of the images obtained via current and dose reduction protocols...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28628619/south-african-ebola-diagnostic-response-in-sierra-leone-a-modular-high-biosafety-field-laboratory
#14
Janusz T Paweska, Petrus Jansen van Vuren, Gunther H Meier, Chantel le Roux, Ousman S Conteh, Alan Kemp, Cardia Fourie, Prabha Naidoo, Serisha Naicker, Phumza Ohaebosim, Nadia Storm, Orienka Hellferscee, Lisa K Ming Sun, Busisiwe Mogodi, Nishi Prabdial-Sing, Desiree du Plessis, Deidre Greyling, Shayne Loubser, Mark Goosen, Stewart D McCulloch, Terence P Scott, Alexandra Moerdyk, Wesley Dlamini, Kelfala Konneh, Idrissa L Kamara, Dauda Sowa, Samuel Sorie, Brima Kargbo, Shabir A Madhi
BACKGROUND: In August 2014, the National Institute for Communicable Diseases (NICD) in South Africa established a modular high-biosafety field Ebola diagnostic laboratory (SA FEDL) near Freetown, Sierra Leone in response to the rapidly increasing number of Ebola virus disease (EVD) cases. METHODS AND FINDINGS: The SA FEDL operated in the Western Area of Sierra Leone, which remained a "hotspot" of the EVD epidemic for months. The FEDL was the only diagnostic capacity available to respond to the overwhelming demand for rapid EVD laboratory diagnosis for several weeks in the initial stages of the EVD crisis in the capital of Sierra Leone...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28622133/mirror-image-video-artifact-an-under-reported-digital-video-eeg-artifact
#15
Michael A Babcock, William H Levis, Amar B Bhatt
Synchronous video recording can be helpful in EEG recordings, especially in recognition of seizures and in rejection of artifacts. However, video recordings themselves are also subject to the risk of contamination by artifacts. We report a unique case in which a digital video artifact was identified, occurring during synchronous video-EEG recording, albeit independently of the EEG tracing itself. A synchronous digital video-EEG recording was performed on a 67-year-old male who presented in focal motor status epilepticus...
2017: Neurodiagnostic Journal
https://www.readbyqxmd.com/read/28622127/prevalence-of-sleep-disordered-breathing-during-routine-electroencephalogram-eeg-a-hospital-based-descriptive-study
#16
Rajesh P Poothrikovil, Abdullah Al Asmi, Ramachandiran Nandhagopal, Mohammed Al Abri
Sleep-disordered breathing (SDB) in adults is a common condition that is associated with a range of medical problems including hypertension, cardiovascular complications, and increase of seizure frequency in susceptible individuals. Polysomnography (PSG) is considered the gold standard measure in the diagnosis of SDB. This is an observational study on the frequency of SDB in adult patients referred for routine EEG. We found that routine EEG was capable of detecting moderate to severe symptoms of SDB in 14% of adult patients (95% confidence interval = 8...
2017: Neurodiagnostic Journal
https://www.readbyqxmd.com/read/28618085/improved-localization-spectral-quality-and-repeatability-with-advanced-mrs-methodology-in-the-clinical-setting
#17
Dinesh K Deelchand, Kejal Kantarci, Gülin Öz
PURPOSE: To investigate the utility of an advanced magnetic resonance spectroscopy (MRS) protocol in the clinical setting, and to compare the localization accuracy, spectral quality, and quantification repeatability between this advanced and the conventional vendor-provided MRS protocol on a clinical 3T platform. METHODS: Proton spectra were measured from the posterior cingulate cortices in 30 healthy elderly subjects by clinical MR technologists using a vendor-provided (point resolved spectroscopy with advanced 3D gradient-echo B0 shimming) and an advanced (semi-LASER with FAST(EST)MAP shimming) protocol, in random order...
June 15, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28612635/wearable-sensors-can-they-benefit-patients-with-chronic-kidney-disease
#18
Fokko Pieter Wieringa, Natascha Juliana Hendrika Broers, Jeroen Peter Kooman, Frank M Van Der Sande, Chris Van Hoof
This article ponders upon wearable medical measurement devices in relation to Chronic Kidney Disease (CKD) and its' associated comorbidities - and whether these might benefit CKD-patients. We aimed to map the intersection(s) of nephrology and wearable sensor technology to help technologists understand medical aspects, and clinicians to understand technological possibilities that are available (or soon will become so). Areas covered: A structured literature search on main comorbidities and complications CKD patients suffer from, was used to steer mini-reviews on wearable sensor technologies clustered around 3 themes being: Cardiovascular-related, diabetes-related and physical fitness/frailty...
June 28, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28612078/an-insight-into-the-eanm-technologist-committee-benchmark-document-on-nuclear-medicine-technologists-competencies
#19
Pedro Fragoso Costa, Andrea Santos, Giorgio Testanera
No abstract text is available yet for this article.
June 13, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28605436/innovation-in-cardiovascular-disease-in-europe-with-focus-on-arrhythmias-current-status-opportunities-roadblocks-and-the-role-of-multiple-stakeholders
#20
Frits W Prinzen, Nikolaos Dagres, Andreas Bollmann, David O Arnar, Sylvie Bove, John Camm, Barbara Casadei, Paulus Kirchhof, Karl-Heinz Kuck, Joost Lumens, Martin C Michel, Peter J Schwartz, Betty Van Vleymen, Panos Vardas, Gerhard Hindricks
The European Heart Rhythm Association (EHRA) held an Innovation Forum in February 2016, to consider issues around innovation. The objective of the forum was to extend the innovation debate outside of the narrow world of arrhythmia specialists and cardiology in general, and seek input from all stakeholders including regulators, strategists, technologists, industry, academia, health providers, medical societies, payers, and patients. Innovation is indispensable for a continuing improvement in health care, preferably at higher efficacy and lower costs...
June 12, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
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