keyword
MENU ▼
Read by QxMD icon Read
search

Medical TH

keyword
https://www.readbyqxmd.com/read/28088183/incidence-aetiology-and-outcome-of-community-acquired-acute-kidney-injury-in-medical-admissions-in-malawi
#1
Rhys D R Evans, Ulla Hemmilä, Alison Craik, Mwayi Mtekateka, Fergus Hamilton, Zuze Kawale, Christopher J Kirwan, Hamish Dobbie, Gavin Dreyer
BACKGROUND: Epidemiological data on Acute Kidney Injury (AKI) from low-income countries is sparse. The aim of this study was to establish the incidence, severity, aetiology, and outcomes of community-acquired AKI in Malawi. METHODS: We conducted a prospective observational study of general medical admissions to a tertiary hospital in Blantyre between 27(th) April and 17(th) July 2015. All patients were screened on admission with a serum creatinine; those with creatinine above laboratory reference range were managed by the nephrology team...
January 14, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28071693/ik-acts-as-an-immunoregulator-of-inflammatory-arthritis-by-suppressing-th17-cell-differentiation-and-macrophage-activation
#2
Hye-Lim Park, Sang-Myeong Lee, Jun-Ki Min, Su-Jin Moon, Inki Kim, Kyung-Won Kang, Sooho Park, SeulGi Choi, Ha-Na Jung, Dong-Hee Lee, Jae-Hwan Nam
Pathogenic T helper cells (TH) and macrophages have been implicated in the development of rheumatoid arthritis (RA), which can lead to severe synovial inflammation and bone destruction. A range of therapies have been widely used for RA, including specific monoclonal antibodies and chemical inhibitors against inflammatory cytokines produced by these cells. However, these have not been sufficient to meet the medical need. Here, we show that in transgenic mice expressing truncated IK (tIK) cytokine, inflammatory arthritis symptoms were ameliorated as the result of suppression of the differentiation of TH1 and TH17 cells and of macrophage activation...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28065993/the-utility-of-the-king-devick-test-as-a-sideline-assessment-tool-for-sport-related-concussions-a-narrative-review
#3
Scott Howitt, Robert Brommer, Justin Fowler, Logan Gerwing, Julian Payne, Christopher DeGraauw
OBJECTIVE: The objective of this paper is to review existing literature surrounding the utility of the King-Devick test which is a commonly used sideline assessment tool for sport-related concussions. METHODS: A review of the literature was performed using MEDLINE, CINHAL, and SportDiscus databases. The search was performed from the beginning of the record through November 16(th), 2015. RESULTS: This search strategy yielded 27 articles from aforementioned databases...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28050452/primary-abdominal-pregnancy-a-case-report
#4
Sunita Dubey, Mohit Satodiya, Priyanka Garg, Mamta Rani
Abdominal pregnancy is a potentially life threatening form of ectopic gestation with an incidence of 1% of all the ectopic pregnancies. Rarely, it may reach at advanced gestation and a viable fetal outcome is indeed a rare event. Most of them are terminated earlier due to poor fetal prognosis and higher chances of maternal mortality secondary to haemorrhagic shock following spontanous placental separation. A high index of suspicion is important for making a diagnosis of abdominal pregnancy and its timely management after correct diagnosis...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28048891/th-e-209-00-radiation-dose-monitoring-and-protocol-management
#5
Matthew Palmer
: Radiation dose monitoring solutions have opened up new opportunities for medical physicists to be more involved in modern clinical radiology practices. In particular, with the help of comprehensive radiation dose data, data-driven protocol management and informed case follow up are now feasible. Significant challenges remain however and the problems faced by medical physicists are highly heterogeneous. Imaging systems from multiple vendors and a wide range of vintages co-exist in the same department and employ data communication protocols that are not fully standardized or implemented making harmonization complex...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048855/th-d-brb-01-scripting-fundamentals-killing-cancer-with-code
#6
R Popple
: Scripting capabilities and application programming interfaces (APIs) are becoming commonly available in modern treatment planning systems. These links to the treatment planning system (TPS) allow users to read data from the TPS, and in some cases use TPS functionality and write data back to the TPS. Such tools are powerful extensions, allowing automation of routine clinical tasks and supporting research, particularly research involving repetitive tasks on large patient populations. The data and functionality exposed by scripting/API capabilities is vendor dependent, as are the languages used by script/API engines, such as the Microsoft ...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048834/th-ef-bra-03-assessment-of-data-driven-respiratory-motion-compensation-methods-for-4d-cbct-image-registration-and-reconstruction-using-clinical-datasets
#7
M J Riblett, E Weiss, G E Christensen, G D Hugo
PURPOSE: To evaluate the performance of a 4D-CBCT registration and reconstruction method that corrects for respiratory motion and enhances image quality under clinically relevant conditions. METHODS: Building on previous work, which tested feasibility of a motion-compensation workflow using image datasets superior to clinical acquisitions, this study assesses workflow performance under clinical conditions in terms of image quality improvement. Evaluated workflows utilized a combination of groupwise deformable image registration (DIR) and image reconstruction...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048582/th-ab-brb-03-4n-radiotherapy
#8
K Sheng
: Current state-of-the art digital C-arm medical linear accelerators are capable of delivering radiation treatments with high level of automation, which affords coordinated motions of gantry, couch, and multileaf collimator (MLC) with dose rate modulations. The new machine capacity has shown the potential to bring substantially improved radiation dosimetry and/or delivery efficiency to many challenging diseases. Combining an integrated beam orientation optimization algorithm with automated machine navigation, markedly improved dose conformity has been achieved using 4ρ therapy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048565/th-ab-201-09
#9
L Mirzakhanian, H Benmakhlouf, J Seuntjens
PURPOSE: To determine the k_(Q_msr,Q)^(f_msr,f_ref) factor, introduced in the small field formalism for five common type chambers used in the calibration of Leksell Gamma-Knife Perfexion model over a range of different phantom electron densities. METHODS: Five chamber types including Exradin-A16, A14SL, A14, A1SL and IBA-CC04 are modeled in EGSnrc and PENELOPE Monte Carlo codes using the blueprints provided by the manufacturers. The chambers are placed in a previously proposed water-filled phantom and four 16-cm diameter spherical phantoms made of liquid water, Solid Water, ABS and polystyrene...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048549/th-a-204-01-part-i-key-data-for-ionizing-radiation-dosimetry
#10
S Seltzer
: The ICRU is currently finalizing a report on key data for radiation dosimetry. This multi-year review has resulted in a number of recommendations regarding "fundamental" data that are used in dosimetry related to radiation therapy. This educational session will explain the background for the ICRU committee's work, the content and conclusions of the report and the impact on outputs, including NIST primary standards, ADCL calibration coefficients and clinical reference dosimetry. Parameters and beam modalities potentially affected by this report include: The mean excitation energy, I, for graphite, air, and water, The average energy required to create an ion pair in dry air (commonly referred to as W/e), The uncertainty in the determination of air kerma in kV x-rays The absolute value of Co-60 and Cs-137 primary standards and the dissemination of calibration coefficients, The determination of air kerma strength for Ir-192 HDR brachytherapy sources Ion chamber kQ factors for linac MV beams Ion chamber kQ factors for proton beams...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048515/th-ab-207a-09-tailoring-tcm-schemes-to-a-task-evaluating-the-impact-of-customized-tcm-profiles-on-detection-of-lung-nodules-in-simulated-ct-lung-cancer-screening
#11
J Hoffman, F Noo, S Young, M McNitt-Gray
PURPOSE: Recent work has shown that current TCM profile designs boost detection of low-contrast lung lesions in the lung apices, but yield reduced detection performance in the mid and lower lung regions relative to fixed tube current cases. This observed imbalance suggests that the TCM scheme might be tailored in new ways to maximize nodule detection throughout the entire lung. In this work, we begin a preliminary investigation into custom TCM profiles in an attempt to achieve uniform lesion detection throughout the extent of the lung...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048509/th-a-brc-03-aapm-tg218-measurement-methods-and-tolerance-levels-for-patient-specific-imrt-verification-qa
#12
M Miften
: AAPM TG-135U1 QA for Robotic Radiosurgery - Sonja Dieterich Since the publication of AAPM TG-135 in 2011, the technology of robotic radiosurgery has rapidly developed. AAPM TG-135U1 will provide recommendations on the clinical practice for using the IRIS collimator, fiducial-less real-time motion tracking, and Monte Carlo based treatment planning. In addition, it will summarize currently available literature about uncertainties. LEARNING OBJECTIVES: 1. Understand the progression of technology since the first TG publication 2...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048504/th-c-204-00-medical-physics-workshop-an-update-on-the-journal-s-improvement-activities-and-guidance-on-writing-and-reviewing-papers
#13
Jeffrey Williamson
In this presentation, the Editors will outline our vision for the future of Medical Physics and review recent work-in-progress initiatives to implement this vision. Finally, we will close with guidance to authors on how to write a good Medical Physics paper. A major focus will be the transition to a new publisher in 2017 following a more than 40-year association with American Institute of Physics Publishing (AIPP). Vision for Medical Physics and status of current initiatives: Jeff Williamson, Editor-in-Chief The broad vision of Medical Physics is "to continue the Journal's tradition of publishing the very best science that propels our discipline forward and improves our contribution to patient care...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048492/th-cd-206-07-determination-of-patient-specific-myocardial-mass-at-risk-using-computed-tomography-angiography
#14
L Hubbard, B Ziemer, S Malkasian, J Lipinski, B Sadeghi, H Javan, B Dertli, E Groves, S Molloi
PURPOSE: To evaluate the accuracy of a patient-specific coronary perfusion territory assignment algorithm that uses CT angiography (CTA) and a minimum-cost-path approach to assign coronary perfusion territories on a voxel-by-voxel basis for determination of myocardial mass at risk. METHODS: Intravenous (IV) contrast (370 mg/mL iodine, 25 mL, 7 mL/s) was injected centrally into five swine (35-45 kg) and CTA was performed using a 320-slice CT scanner at 100 kVp and 200 mA...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048489/th-ab-202-10-quantifying-the-accuracy-and-precision-of-six-degree-of-freedom-motion-estimation-for-use-in-real-time-tumor-motion-monitoring-during-radiotherapy
#15
J Kim, D Nguyen, C Huang, R O'Brien, V Caillet, P Poulsen, J Booth, P Keall
PURPOSE: Kilovoltage intrafraction monitoring (KIM) scheme has been successfully used to simultaneously monitor 3D tumor motion during radiotherapy. Recently, an iterative closest point (ICP) algorithm was implemented in KIM to also measure rotations about three axes, enabling real-time tracking of tumor motion in six degrees-of-freedom (DoF). This study aims to evaluate the accuracy of the six DoF motion estimates of KIM by comparing it with the corresponding motion (i) measured by the Calypso; and (ii) derived from kV/MV triangulation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048463/th-c-brc-02-a-review-of-emerging-technologies-in-robotic-srs-sbrt-delivery
#16
L Wang
: The delivery techniques for SRS/SBRT have been under rapid developments in recent years, which pose new challenges to medical physicists ranging from planning and quality assurance to imaging and motion management. This educational course will provide a general overview of the latest delivery techniques in SRS/SBRT, and discuss the clinical processes to address the challenges of each technique with special emphasis on dedicated gamma-ray based device, robotic x-band linac-based system and conventional C-arm s-band linac-based SRS systems...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048414/th-ab-207a-05-a-fully-automated-pipeline-for-generating-ct-images-across-a-range-of-doses-and-reconstruction-methods
#17
S Young, P Lo, J Hoffman, M Wahi-Anwar, F Noo, M Brown, M McNitt-Gray
PURPOSE: To evaluate the robustness of CAD or Quantitative Imaging methods, they should be tested on a variety of cases and under a variety of image acquisition and reconstruction conditions that represent the heterogeneity encountered in clinical practice. The purpose of this work was to develop a fully-automated pipeline for generating CT images that represent a wide range of dose and reconstruction conditions. METHODS: The pipeline consists of three main modules: reduced-dose simulation, image reconstruction, and quantitative analysis...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048407/th-d-brc-04-panel-member
#18
C Yu
: Interest in proton therapy has increased dramatically in the past couple of years, especially in the United States. There certainly is an important place for proton therapy in the arsenal of cancer treatments. Its dosimetric advantage and potential for low toxicity makes it the perfect partner for photons and other cancer treatment modalities. Often there is a belief that the new technology ought to be better but many believe that they should be widely adopted in the clinic only after evidence has shown that they are at least as safe and efficacious as existing technologies, which are often less expensive...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048367/th-a-207b-00-shear-wave-imaging-and-a-qiba-us-biomarker-update
#19
Paul Carson
: Imaging of tissue elastic properties is a relatively new and powerful approach to one of the oldest and most important diagnostic tools. Imaging of shear wave speed with ultrasound is has been added to most high-end ultrasound systems. Understanding this exciting imaging mode aiding its most effective use in medicine can be a rewarding effort for medical physicists and other medical imaging and treatment professionals. Assuring consistent, quantitative measurements across the many ultrasound systems in a typical imaging department will constitute a major step toward realizing the great potential of this technique and other quantitative imaging...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048358/th-f-201-01-the-problem-is-this-a-trick-question
#20
C Bloch
: Multiple choice questions are a tool medical physicists encounter throughout their careers. They are a commonly used method of assessment during our early didactic training (graduate school, residency and board certification). They are used throughout our MOC process both in SAMs and online CE. And they are used for the MOC exam every 10 years. While we have significant training in answering these multiple choice questions, we rarely receive training in how to construct effective multiple choice questions...
June 2016: Medical Physics
keyword
keyword
112438
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"