keyword
MENU ▼
Read by QxMD icon Read
search

MBF

keyword
https://www.readbyqxmd.com/read/29444388/the-virtual-microscopy-database-sharing-digital-microscope-images-for-research-and-education
#1
Lisa M J Lee, Haviva M Goldman, Michael Hortsch
Over the last 20 years, virtual microscopy has become the predominant modus of teaching the structural organization of cells, tissues, and organs, replacing the use of optical microscopes and glass slides in a traditional histology or pathology laboratory setting. Although virtual microscopy image files can easily be duplicated, creating them requires not only quality histological glass slides but also an expensive whole slide microscopic scanner and massive data storage devices. These resources are not available to all educators and researchers, especially at new institutions in developing countries...
February 14, 2018: Anatomical Sciences Education
https://www.readbyqxmd.com/read/29438436/assessment-of-coronary-vascular-function-with-cardiac-pet-in-relation-to-serum-uric-acid
#2
Seoyoung C Kim, Nishant R Shah, James R Rogers, Courtney F Bibbo, Marcelo F Di Carli, Daniel H Solomon
BACKGROUND: Elevated serum uric acid (SUA) levels have been independently associated with cardiovascular disease. Stress myocardial perfusion positron emission tomography (PET) allows for measurement of absolute myocardial blood flow (MBF) and quantification of global left ventricular coronary flow reserve (CFR). A CFR <2.0 is considered impaired coronary vascular function, and it is associated with increased cardiovascular risk. We evaluated the relationship between SUA and PET-measured markers of coronary vascular function...
2018: PloS One
https://www.readbyqxmd.com/read/29433968/dynamic-stress-computed-tomography-myocardial-perfusion-for-detecting-myocardial-ischemia-a-systematic-review-and-meta-analysis
#3
Minjie Lu, Shuli Wang, Arlene Sirajuddin, Andrew E Arai, Shihua Zhao
BACKGROUND: Comparing to SPECT and MRI, with higher temporal and spatial resolution and development of radiation dose reduction, myocardial computed tomography perfusion has emerged as a potential method for evaluation of hemodynamic myocardial ischemia. This meta-analysis systematically analyzed the performance of dynamic CT myocardial perfusion (DCTMP) to diagnose myocardial ischemia (MI) with clinically established reference methods [MR/SPECT/PET perfusion and fractional flow reserve (FFR)] as the reference standard...
February 10, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29414164/bioflocculants-production-from-a-cellulase-free-xylanase-producing-pseudomonas-boreopolis-g22-by-degrading-biomass-and-its-application-in-cost-effective-harvest-of-microalgae
#4
Haipeng Guo, Chuntao Hong, Cheng Zhang, Bingsong Zheng, Dean Jiang, Wensheng Qin
The major problem for industrial application of bioflocculants is its high production cost. Here, a novel bacterium Pseudomonas boreopolis G22, which can secret a cellulase-free xylanase and simultaneously produce bioflocculants (MBF-G22) through directly converting untreated biomass, was isolated. The bioflocculants' production of G22 was closely related to its xylanase activity, hydrolysis ability of biomass and the hemicellulose loss caused by G22. The optimal fermentation conditions with the highest bioflocculants' yield (3...
January 31, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29406855/effect-of-plaque-burden-and-morphology%C3%A2-on-myocardial-blood-flow-and%C3%A2-fractional-flow%C3%A2-reserve
#5
Roel S Driessen, Wijnand J Stuijfzand, Pieter G Raijmakers, Ibrahim Danad, James K Min, Jonathon A Leipsic, Amir Ahmadi, Jagat Narula, Peter M van de Ven, Marc C Huisman, Adriaan A Lammertsma, Albert C van Rossum, Niels van Royen, Paul Knaapen
BACKGROUND: Atherosclerotic plaque characteristics may affect downstream myocardial perfusion, as well as coronary lesion severity. OBJECTIVES: This study sought to evaluate the association between quantitative plaque burden and plaque morphology obtained using coronary computed tomography angiography (CTA) and quantitative myocardial perfusion obtained using [15O]H2O positron emission tomography (PET), as well as fractional flow reserve (FFR) derived invasively...
February 6, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29372272/combined-evaluation-of-regional-coronary-artery-calcium-and-myocardial-perfusion-by-82rb-pet-ct-in-the-identification-of-obstructive-coronary-artery-disease
#6
Emilia Zampella, Wanda Acampa, Roberta Assante, Carmela Nappi, Valeria Gaudieri, Ciro Gabriele Mainolfi, Roberta Green, Valeria Cantoni, Mariarosaria Panico, Michele Klain, Mario Petretta, Piotr J Slomka, Alberto Cuocolo
PURPOSE: Cardiac imaging with PET/CT allows measurement of coronary artery calcium (CAC), myocardial perfusion and coronary vascular function. We investigated whether the combined assessment of regional CAC score, ischemic total perfusion deficit (ITPD) and quantitative coronary vascular function would further improve the diagnostic accuracy of PET/CT in predicting obstructive coronary artery disease (CAD). METHODS: We analyzed 113 patients with suspected CAD referred to 82Rb PET/CT myocardial perfusion imaging with available coronary angiographic data...
January 25, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29359273/comparison-of-two-software-systems-for-quantification-of-myocardial-blood-flow-in-patients-with%C3%A2-hypertrophic-cardiomyopathy
#7
Hulya Yalcin, Ines Valenta, Min Zhao, Abdel Tahari, Dai-Yin Lu, Takahiro Higuchi, Fatih Yalcin, Nagehan Kucukler, Yalda Soleimanifard, Yun Zhou, Martin G Pomper, Theodore P Abraham, Ben Tsui, Martin A Lodge, Thomas H Schindler, M Roselle Abraham
BACKGORUND: Quantification of myocardial blood flow (MBF) by positron emission tomography (PET) is important for investigation of angina in hypertrophic cardiomyopathy (HCM). Several software programs exist for MBF quantification, but they have been mostly evaluated in patients (with normal cardiac geometry), referred for evaluation of coronary artery disease (CAD). Software performance has not been evaluated in HCM patients who frequently have hyperdynamic LV function, LV outflow tract (LVOT) obstruction, small LV cavity size, and variation in the degree/location of LV hypertrophy...
January 22, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29340986/comparison-of-maximal-rubidium-82-activities%C3%A2-for%C3%A2-myocardial-blood-flow-quantification-between-digital-and-conventional-pet-systems
#8
Joris D van Dijk, Pieter L Jager, Jochen A C van Osch, Maryam Khodaverdi, Jorn A van Dalen
BACKGROUND: PET-based myocardial blood flow (MBF) quantification can be inaccurate when using high tracer activities. Our aim was to derive the maximal Rubidium-82 activity for MBF assessment using a new digital PET system and compare the results with conventional analog systems. METHODS: 1.8 GBq Rubidium-82 was injected into the cardiac insert of an anthropomorphic torso phantom. Data were acquired for 10 min using an Ingenuity TF (Philips Healthcare), Discovery 690 (D690, GE Healthcare), and digital PET prototype system (Philips Healthcare)...
January 16, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29288194/increased-middle-cerebral-artery-mean-blood-flow-velocity-index-after-stroke-thrombectomy-indicates-increased-risk-for-intracranial-hemorrhage
#9
Markus Kneihsl, Kurt Niederkorn, Hannes Deutschmann, Christian Enzinger, Birgit Poltrum, Renate Fischer, Daniela Thaler, Christina Hermetter, Gerit Wünsch, Franz Fazekas, Thomas Gattringer
BACKGROUND AND PURPOSE: Cerebral hyperperfusion has been related to the risk of intracranial hemorrhage (ICH) in stroke patients after vessel recanalization therapy. We hypothesized that after successful mechanical thrombectomy for acute anterior circulation stroke, hemodynamics detectable by transcranial Duplex (TCD) sonography would vary, and that increased blood flow velocities would be associated with ICH. METHODS: We retrospectively identified all ischemic stroke patients with successful endovascular recanalization for anterior circulation vessel occlusion (Thrombolysis in Cerebral Infarction 2b-3) between 2010 and 2017...
December 28, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29236988/diagnostic-and-prognostic-value-of-myocardial-blood-flow-quantification-as-non-invasive-indicator-of-cardiac-allograft-vasculopathy
#10
Paco E Bravo, Brian A Bergmark, Tomas Vita, Viviany R Taqueti, Ankur Gupta, Sara Seidelmann, Thomas E Christensen, Michael T Osborne, Nishant R Shah, Nina Ghosh, Jon Hainer, Courtney F Bibbo, Meagan Harrington, Fred Costantino, Mandeep R Mehra, Sharmila Dorbala, Ron Blankstein, Akshay Desai, Lynne Stevenson, Michael M Givertz, Marcelo F Di Carli
Aims: Cardiac allograft vasculopathy (CAV) is a leading cause of death in orthotopic heart transplant (OHT) survivors. Effective non-invasive screening methods are needed. Our aim was to investigate the added diagnostic and prognostic value of myocardial blood flow (MBF) to standard myocardial perfusion imaging (MPI) with positron emission tomography (PET) for CAV detection. Methods and results: We studied 94 OHT recipients (prognostic cohort), including 66 who underwent invasive coronary angiography and PET within 1 year (diagnostic cohort)...
December 8, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29205439/influence-of-removable-prostheses-on-mastication-in-elderly-subjects-with-rheumatoid-arthritis-mastication-in-elders-with-rheumatoid-arthritis
#11
Kelly M Andrade, Bruna F M Alfenas, Renata C M Rodrigues Garcia
BACKGROUND: Rheumatoid arthritis (RA) is a prevalent disease in the elderly population, and it may affect the temporomandibular joint (TMJ) and the stomatognathic system OBJECTIVE: This study evaluated masticatory function in elderly patients with RA before and after oral rehabilitation with removable prostheses METHODS: Forty-five elders with partial or total edentulism who were using unsatisfactory removable prostheses were selected and assigned to three groups: RA with TMJ involvement, RA without TMJ involvement, and healthy controls...
December 4, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29196872/seleno-compounds-and-carnosic-acid-added-to-diets-with-rapeseed-and-fish-oils-affect-concentrations-of-selected-elements-and-chemical-composition-in-the-liver-heart-and-muscles-of-lambs
#12
Marian Czauderna, Anna Ruszczyńska, Ewa Bulska, Katarzyna Agnieszka Krajewska
The objective of our studies was to investigate effects of carnosic acid (CA), selenized yeast (SeY) and selenate (SeVI) added to the diet including rapeseed oil (RO) and fish oil (FO) on concentrations of elements, fatty acids (FAs), tocopherols, cholesterol, and malondialdehyde in the liver, heart, musculus longissimus dorsi (MLD), and musculus biceps femoris (MBF) of lambs. Lambs were fed diets: group I-the basal diet (BD) with RO; group II-BD with RO and FO; group III-BD with RO, FO, and CA; group IV-BD with RO, FO, CA, and SeY; group V-BD with RO, FO, CA, and SeVI...
December 2, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29194749/longitudinal-effects-of-teriparatide-or-zoledronic-acid-on-bone-modeling-and-remodeling-based-formation-in-the-shotz-study
#13
David W Dempster, Hua Zhou, Valerie A Ruff, Thomas E Melby, Jahangir Alam, Kathleen A Taylor
Previously we reported on bone histomorphometry, biochemical markers, and bone mineral density distribution following 6 and 24 months of treatment with teriparatide (TPTD) or zoledronic acid (ZOL) in the SHOTZ study. The study included a 12-month primary study period, with treatment (TPTD 20 μg/day by subcutaneous injection or ZOL 5 mg/year by intravenous infusion) randomized and double-blind until the month 6 biopsy (TPTD n=28, ZOL n=30 evaluable), then open-label, with an optional 12-month extension receiving the original treatment...
November 30, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29184761/estimating-extraction-fraction-and-blood-flow-by-combining-first-pass-myocardial-perfusion-and-t1-mapping-results
#14
Devavrat Likhite, Promporn Suksaranjit, Ganesh Adluru, Brent Wilson, Edward DiBella
Background: Quantifying myocardial perfusion is complicated by the complexity of pharmacokinetic model being used and the reliability of perfusion parameter estimates. More complex modeling provides more information about the underlying physiology, but too many parameters in complex models introduce a new problem of reliable estimation. To overcome the problem of multiple parameters, we have developed a technique that combines knowledge from two different cardiac magnetic resonance (MR) imaging techniques: dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and T1 mapping...
October 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29173905/optimization-of-imaging-protocols-for-myocardial-blood-flow-mbf-quantification-with-18f-flurpiridaz-pet
#15
Kanyalak Wiyaporn, Chiraporn Tocharoenchai, Pawana Pusuwan, Takahiro Higuchi, George S K Fung, Tao Feng, Min Jae Park, Benjamin M W Tsui
The new PET tracer, 18F-flurpiridaz, with high myocardial extraction allows quantitative myocardial blood flow (MBF) estimation from dynamic PET data and tracer kinetic modeling. The goal of this study is to determine the optimal imaging protocols and parameters using a realistic simulation study. The time activity curves (TACs) of different tissue organs from a 30-s infusion time (IT) of 18F-flurpiridaz in a dynamic PET study were extracted from a previous study. The TACs at different time points were incorporated in a series of realistic 3D XCAT phantoms from which the parameters of a 2-compartment model and the 'true' MBF of 18F-flurpiridaz were determined...
October 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/29171086/a-randomized-study-of-prourokinase-during-primary-percutaneous-coronary-intervention-in-acute-st-segment-elevation-myocardial-infarction
#16
Wei Geng, Qi Zhang, Jingmin Liu, Xiang Tian, Libo Zhen, Da Song, Ying Yang, Haiyun Meng, Yafang Wang, Jianjun Chen
OBJECTIVES: To evaluate the efficacy and safety of intracoronary administration of prourokinase via balloon catheter during primary percutaneous coronary interventions (PCI) in patients with acute ST-segment elevation myocardial infarction (STEMI). METHODS: Acute STEMI patients underwent primary PCI were randomly divided into two groups: intracoronary prourokinase (IP) group (n = 118) and control group (n = 112). During primary PCI, prourokinase or saline were injected to the distal end of the culprit lesion via balloon catheter after balloon catheter dilatation...
November 23, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/29169118/characterization-of-a-microbial-polysaccharide-based-bioflocculant-and-its-anti-inflammatory-and-pro-coagulant-activity
#17
Chunying Zhong, Gang Cao, Kuan Rong, Zhengwu Xia, Ting Peng, Honggao Chen, Jiangang Zhou
We describe a novel bioflocculant, MBF-15, which is an exopolysaccharide extracted from the alkaliphilic bacterium Paenibacillus jamilae. The biophysical characteristics of MBF-15 were determined using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. MBF-15 was also evaluated for its biocompatibility by examining its inflammatory, coagulant, and hemostatic properties in vitro and in vivo. Pretreatment of peripheral blood mononuclear cells with MBF-15 inhibited lipopolysaccharide-stimulated expression of inducible nitric oxide synthase, production of nitric oxide, and secretion of pro-inflammatory cytokines, including tumor necrosis factor-α and interleukin-6...
November 16, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29138942/calculation-of-left-ventricular-volumes-and-ejection-fraction-from-dynamic-cardiac-gated-15-o-water-pet-ct-5d-pet
#18
Jonny Nordström, Tanja Kero, Hendrik Johannes Harms, Charles Widström, Frank A Flachskampf, Jens Sörensen, Mark Lubberink
BACKGROUND: Quantitative measurement of myocardial blood flow (MBF) is of increasing interest in the clinical assessment of patients with suspected coronary artery disease (CAD). (15)O-water positron emission tomography (PET) is considered the gold standard for non-invasive MBF measurements. However, calculation of left ventricular (LV) volumes and ejection fraction (EF) is not possible from standard (15)O-water uptake images. The purpose of the present work was to investigate the possibility of calculating LV volumes and LVEF from cardiac-gated parametric blood volume (V B) (15)O-water images and from first pass (FP) images...
November 14, 2017: EJNMMI Physics
https://www.readbyqxmd.com/read/29133157/microbiological-and-clinical-characteristics-of-biofilm-forming-candida-parapsilosis-isolates-associated-with-fungaemia-and-their-impact-on-mortality
#19
Silvia Soldini, Brunella Posteraro, Antonietta Vella, Elena De Carolis, Elisa Borghi, Monica Falleni, Angela Raffaella Losito, Giuseppe Maiuro, Enrico Maria Trecarichi, Maurizio Sanguinetti, Mario Tumbarello
OBJECTIVES: Biofilm formation (BF) by fungal isolates may dramatically complicate infection. We determined the ability of C. parapsilosis isolates from single fungaemia episodes to form biofilms and we analysed biofilm subgroups for antifungal susceptibility and pathogenic potential. We then correlated BF with clinical characteristics and outcomes of the episodes. METHODS: BF was measured using the crystal-violet biomass assay, antifungal susceptibility of preformed biofilms was assessed, and virulence was studied using the Galleria mellonella model...
November 10, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29110669/a-comparison-of-cardiovascular-magnetic-resonance-and-single-photon-emission-computed-tomography-spect-perfusion-imaging-in-left-main-stem-or-equivalent-coronary-artery-disease-a-ce-marc-substudy
#20
James R J Foley, Ananth Kidambi, John D Biglands, Neil Maredia, Catherine J Dickinson, Sven Plein, John P Greenwood
BACKGROUND: Assessment of left main stem (LMS) stenosis has prognostic and therapeutic implications. Data on assessment of LMS disease by cardiovascular magnetic resonance (CMR) and single photon emission computed tomography (SPECT) are limited. CE-MARC is the largest prospective comparison of CMR and SPECT against quantitative invasive coronary angiography (QCA) for detection of coronary artery disease (CAD), and provided the framework for this evaluation. The aims of this study were to compare diagnostic accuracy of visual and quantitative perfusion CMR to SPECT in patients with LMS stable CAD...
November 6, 2017: Journal of Cardiovascular Magnetic Resonance
keyword
keyword
31146
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"