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https://www.readbyqxmd.com/read/28220617/wave-caipi-for-highly-accelerated-mp-rage-imaging
#1
Daniel Polak, Kawin Setsompop, Stephen F Cauley, Borjan A Gagoski, Himanshu Bhat, Florian Maier, Peter Bachert, Lawrence L Wald, Berkin Bilgic
PURPOSE: To introduce a highly accelerated T1-weighted magnetization-prepared rapid gradient echo (MP-RAGE) acquisition that uses wave-controlled aliasing in parallel imaging (wave-CAIPI) encoding to retain high image quality. METHODS: Significant acceleration of the MP-RAGE sequence is demonstrated using the wave-CAIPI technique. Here, sinusoidal waveforms are used to spread aliasing in all three directions to improve the g-factor. Combined with a rapid (2 s) coil sensitivity acquisition and data-driven trajectory calibration, we propose an online integrated acquisition-reconstruction pipeline for highly efficient MP-RAGE imaging...
February 20, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28191592/what-is-the-clinical-evidence-on-regenerative-medicine-in-intervertebral-disc-degeneration
#2
REVIEW
M Basso, L Cavagnaro, A Zanirato, S Divano, C Formica, M Formica, L Felli
PURPOSE: This review aims to explore and summarize the current clinical evidence about the use of regenerative medicine such as mesenchymal stem cells or platelet-rich plasma in intervertebral disc regeneration, in order to clarify the state of art of these novel approaches. MATERIALS AND METHODS: We performed a research of the available literature about regenerative medicine strategies aiming to prevent intervertebral disc degeneration. All preclinical trials and in vitro studies were excluded...
February 13, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28182577/expressing-analytical-performance-from-multi-sample-evaluation-in-laboratory-eqa
#3
Marc H M Thelen, Rob T P Jansen, Cas W Weykamp, Herman Steigstra, Ron Meijer, Christa M Cobbaert
BACKGROUND: To provide its participants with an external quality assessment system (EQAS) that can be used to check trueness, the Dutch EQAS organizer, Organization for Quality Assessment of Laboratory Diagnostics (SKML), has innovated its general chemistry scheme over the last decade by introducing fresh frozen commutable samples whose values were assigned by Joint Committee for Traceability in Laboratory Medicine (JCTLM)-listed reference laboratories using reference methods where possible...
February 9, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28167246/performance-specifications-for-the-extra-analytical-phases-of-laboratory-testing-why-and-how
#4
REVIEW
Mario Plebani
An important priority in the current healthcare scenario should be to address errors in laboratory testing, which account for a significant proportion of diagnostic errors. Efforts made in laboratory medicine to enhance the diagnostic process have been directed toward improving technology, greater volumes and more accurate laboratory tests being achieved, but data collected in the last few years highlight the need to re-evaluate the total testing process (TTP) as the unique framework for improving quality and patient safety...
February 4, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28163015/a-pragmatic-approach-to-sample-acceptance-and-rejection
#5
Janne Cadamuro, Ana-Maria Simundic, Eva Ajzner, Sverre Sandberg
Sample rejection due to preanalytical errors is very common in many medical laboratories worldwide, though the decision when and how to refrain from analyzing such samples is handled very heterogeneously. As a rational, it is mostly stated that it is done to prevent the patient from being harmed by wrong medical decisions based on such values. But when thinking of the consequences of laboratory results instead of their quality being important per se, the rejection of preanalytically altered samples might be harming the patient by the need of re-collection and timely delay...
February 2, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28155639/inferring-new-indications-for-approved-drugs-via-random-walk-on-drug-disease-heterogenous-networks
#6
Hui Liu, Yinglong Song, Jihong Guan, Libo Luo, Ziheng Zhuang
BACKGROUND: Since traditional drug research and development is often time-consuming and high-risk, there is an increasing interest in establishing new medical indications for approved drugs, referred to as drug repositioning, which provides a relatively low-cost and high-efficiency approach for drug discovery. With the explosive growth of large-scale biochemical and phenotypic data, drug repositioning holds great potential for precision medicine in the post-genomic era. It is urgent to develop rational and systematic approaches to predict new indications for approved drugs on a large scale...
December 23, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28153370/understanding-the-use-of-sigma-metrics-in-hemoglobin-a1c-analysis
#7
REVIEW
Erna Lenters-Westra, Emma English
This study uses three unique data sets to show the state of the art of hemoglobin A1c (HbA1c) analyzers in a range of settings and compares their performance against the international guidance set by the International Federation of Clinical Chemistry and Laboratory Medicine task force for HbA1c standardization. The data are used to show the effect of tightening those criteria, and the study serves as a guide to the practical implementation of the sigma-metrics approach in a range of clinical settings.
March 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/28124959/-prevalence-of-human-leukocyte-antigen-hla-b-57-01-in-hiv-infected-patients
#8
Aydın Deveci, Ahmet Yılmaz Çoban, Belma Durupınar
Deaths related with human immunodeficiency virus (HIV) infections have been decreased by the introduction of combined anti-retroviral therapy (ART) into the clinical practice. Combined ART usually consists of two nucleoside/nucleotide analogs reverse transcriptase inhibitors (NRTI) that is called backbone and a third drug that belongs to either non-nucleoside/nucleotide reverse transcriptase inhibitors (NNRTI), protease inhibitors (PI), integrase strand transfer inhibitors (INSTI) or entry inhibitors. During abacavir therapy which is a member of NRTI, hypersensitivity reactions can occur approximately 4-9% of the patients that lead difficulties for the management of HIV infections...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28075593/formation-of-nickel-clusters-wrapped-in-carbon-cages-toward-new-endohedral-metallofullerene-synthesis
#9
Alexander S Sinitsa, Thomas W Chamberlain, Thilo Zoberbier, Irina V Lebedeva, Andrey M Popov, Andrey A Knizhnik, Robert L McSweeney, Johannes Biskupek, Ute Kaiser, Andrei N Khlobystov
Despite the high potential of endohedral metallofullerenes (EMFs) for application in biology, medicine and molecular electronics, and recent efforts in EMF synthesis, the variety of EMFs accessible by conventional synthetic methods remains limited and does not include, for example, EMFs of late transition metals. We propose a method in which EMF formation is initiated by electron irradiation in aberration-corrected high-resolution transmission electron spectroscopy (AC-HRTEM) of a metal cluster surrounded by amorphous carbon inside a carbon nanotube serving as a nanoreactor and apply this method for synthesis of nickel EMFs...
January 18, 2017: Nano Letters
https://www.readbyqxmd.com/read/28048283/we-h-204-03-part-2-history-and-archives-resources-at-aip-for-aapm-and-its-members
#10
M Mueller
: "William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047523/we-h-204-00-history-committee-symposium
#11
Michael Gossman
: "William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046866/we-h-204-01-william-d-coolidge-inventor-of-the-modern-x-ray-tube
#12
D Allard
: "William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046206/we-h-204-02-part-1-history-and-archives-resources-at-aip-for-aapm-and-its-members
#13
G Good
: "William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27988505/quality-indicators-in-laboratory-medicine-the-status-of-the-progress-of-ifcc-working-group-laboratory-errors-and-patient-safety-project
#14
Laura Sciacovelli, Giuseppe Lippi, Zorica Sumarac, Jamie West, Isabel Garcia Del Pino Castro, Keila Furtado Vieira, Agnes Ivanov, Mario Plebani
The knowledge of error rates is essential in all clinical laboratories as it enables them to accurately identify their risk level, and compare it with those of other laboratories in order to evaluate their performance in relation to the State-of-the-Art (i.e. benchmarking) and define priorities for improvement actions. Although no activity is risk free, it is widely accepted that the risk of error is minimized by the use of Quality Indicators (QIs) managed as a part of laboratory improvement strategy and proven to be suitable monitoring and improvement tools...
March 1, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/27943261/efavirenz-or-nevirapine-in-three-drug-combination-therapy-with-two-nucleoside-or-nucleotide-reverse-transcriptase-inhibitors-for-initial-treatment-of-hiv-infection-in-antiretroviral-na%C3%A3-ve-individuals
#15
REVIEW
Lawrence Mbuagbaw, Sara Mursleen, James H Irlam, Alicen B Spaulding, George W Rutherford, Nandi Siegfried
BACKGROUND: The advent of highly active antiretroviral therapy (ART) has reduced the morbidity and mortality due to HIV infection. The World Health Organization (WHO) ART guidelines focus on three classes of antiretroviral drugs, namely nucleoside or nucleotide reverse transcriptase inhibitors (NRTI), non-nucleoside reverse transcriptase inhibitors (NNRTI) and protease inhibitors. Two of the most common medications given as first-line treatment are the NNRTIs, efavirenz (EFV) and nevirapine (NVP)...
10, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27942775/an-innovative-snp-genotyping-method-adapting-to-multiple-platforms-and-throughputs
#16
Y M Long, W S Chao, G J Ma, S S Xu, L L Qi
An innovative genotyping method designated as semi-thermal asymmetric reverse PCR (STARP) was developed for genotyping individual SNPs with improved accuracy, flexible throughputs, low operational costs, and high platform compatibility. Multiplex chip-based technology for genome-scale genotyping of single nucleotide polymorphisms (SNPs) has made great progress in the past two decades. However, PCR-based genotyping of individual SNPs still remains problematic in accuracy, throughput, simplicity, and/or operational costs as well as the compatibility with multiple platforms...
December 9, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27942695/from-stats-to-stage-translational-research-in-performing-arts-medicine
#17
EDITORIAL
Bronwen J Ackermann
Medical Problems of Performing Artists, since its inception under the legendary Alice Brandfonbrener's guidance and vision, has always recognized the need for voices to be heard from the clinic, stage, and experimental research. This has been important in a relatively young field like performing arts medicine, where there is not yet a robust base of evidence to draw from for the complex range of physical, psychological, and institutional challenges that can affect performer health. Evidence-based medicine has long been described as using the best available research in conjunction with clinical expertise, while considering patient beliefs, characteristics, and circumstances...
December 2016: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/27933280/bone-imaging-in-prostate-cancer-the-evolving-roles-of-nuclear-medicine-and-radiology
#18
REVIEW
Gary J R Cook, Gurdip Azad, Anwar R Padhani
The bone scan continues to be recommended for both the staging and therapy response assessment of skeletal metastases from prostate cancer. However, it is widely recognised that bone scans have limited sensitivity for disease detection and is both insensitive and non-specific for determining treatment response, at an early enough time point to be clinically useful. We, therefore, review the evolving roles of nuclear medicine and radiology for this application. We have reviewed the published literature reporting recent developments in imaging bone metastases in prostate cancer, and provide a balanced synopsis of the state of the art...
2016: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27902695/text-mining-genotype-phenotype-relationships-from-biomedical-literature-for-database-curation-and-precision-medicine
#19
Ayush Singhal, Michael Simmons, Zhiyong Lu
The practice of precision medicine will ultimately require databases of genes and mutations for healthcare providers to reference in order to understand the clinical implications of each patient's genetic makeup. Although the highest quality databases require manual curation, text mining tools can facilitate the curation process, increasing accuracy, coverage, and productivity. However, to date there are no available text mining tools that offer high-accuracy performance for extracting such triplets from biomedical literature...
November 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27901055/mediboost-a-patient-stratification-tool-for-interpretable-decision-making-in-the-era-of-precision-medicine
#20
Gilmer Valdes, José Marcio Luna, Eric Eaton, Charles B Simone, Lyle H Ungar, Timothy D Solberg
Machine learning algorithms that are both interpretable and accurate are essential in applications such as medicine where errors can have a dire consequence. Unfortunately, there is currently a tradeoff between accuracy and interpretability among state-of-the-art methods. Decision trees are interpretable and are therefore used extensively throughout medicine for stratifying patients. Current decision tree algorithms, however, are consistently outperformed in accuracy by other, less-interpretable machine learning models, such as ensemble methods...
November 30, 2016: Scientific Reports
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