keyword
MENU ▼
Read by QxMD icon Read
search

Vessels

keyword
https://www.readbyqxmd.com/read/28735256/comparison-of-multimodal-intra-arterial-treatment-versus-intravenous-thrombolysis-for-hypertensive-patients-with-severe-large-vessel-cerebral-infarction
#1
Zuojun Tian, Geng Liao, Shaoming Li, Yuechun Shen, Changbing Chen, Lei Liu, Yiheng Li
Since intravenous thrombolysis (IVT) is often associated with poor outcomes in hypertensive patients with severe acute cerebral infarction (ACI) due to occlusions of the internal carotid, basilar, or proximal middle cerebral artery, we evaluated whether multimodal intra-arterial treatment (IAT) might improve functional outcomes in this patient population. We retrospectively reviewed the charts of eligible patients who underwent multimodal IAT including intra-arterial thrombolysis, mechanical thrombectomy, balloon and/or stent angioplasty (IAT group) or IVT alone (IVT group)...
July 21, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28735118/giant-meckel-s-diverticulum-compressing-root-of-mesentery-a-rare-cause-of-ileal-gangrene-case-report-and-review-of-literature
#2
Mohammed Farooq, Aashish Rajesh
INTRODUCTION: Meckel's diverticulum (MD) commonly presents as gastrointestinal bleeding in the pediatric population and intestinal obstruction in adults. There is no consensus for surgical excision of an incidentally diagnosed MD. We present a hitherto unreported vascular cause of intestinal gangrene due to MD. CASE PRESENTATION: A 16year old boy was referred as an acute abdomen for tertiary hospital management. Clinical examination and CT suggested small bowel obstruction and emergency laparotomy was performed...
July 14, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28734956/fast-carotid-artery-mr-angiography-with-compressed-sensing-based-three-dimensional-time-of-fight-sequence
#3
Bo Li, Hao Li, Li Dong, Guofu Huang
OBJECTIVE: In this study, we sought to investigate the feasibility of fast carotid artery MR angiography (MRA) by combining three-dimensional time-of-flight (3D TOF) with compressed sensing method (CS-3D TOF). MATERIALS AND METHODS: A pseudo-sequential phase encoding order was developed for CS-3D TOF to generate hyper-intense vessel and suppress background tissues in under-sampled 3D k-space. Seven healthy volunteers and one patient with carotid artery stenosis were recruited for this study...
July 19, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28734913/uncovered-culprit-plaque-ruptures-in-patients-with-st-segment-elevation-myocardial-infarction-assessed-by-optical-coherence-tomography-and-intravascular-ultrasound-with-imap
#4
Mikkel Hougaard, Henrik Steen Hansen, Per Thayssen, Lisbeth Antonsen, Lisette Okkels Jensen
OBJECTIVES: This study assessed the incidence and course of healing of uncovered plaque ruptures (PR) following primary percutaneous coronary intervention. BACKGROUND: The infarct-related occlusion is frequently located at the lesion site with maximum thrombus burden, whereas the culprit PR may be situated more proximally or distally. METHODS: Uncovered PR in segments adjacent to the stent were identified by optical coherence tomography and intravascular ultrasound using iMap (Boston Scientific, Marlborough, Massachusetts) within 48 h and after 12 months...
July 13, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28734873/a-computational-fluid-structure-interaction-analysis-of-coronary-y-grafts
#5
Bruno Guerciotti, Christian Vergara, Sonia Ippolito, Alfio Quarteroni, Carlo Antona, Roberto Scrofani
Coronary artery disease is one of the leading causes of death worldwide. The stenotic coronary vessels are generally treated with coronary artery bypass grafts (CABGs), which can be either arterial (internal mammary artery, radial artery) or venous (saphenous vein). However, the different mechanical properties of the graft can influence the outcome of the procedure in terms of risk of restenosis and subsequent graft failure. In this paper, we perform a computational fluid-structure interaction (FSI) analysis of patient-specific multiple CABGs (Y-grafts) with the aim of better understanding the influence of the choice of bypass (arterial vs venous) on the risk of graft failure...
July 19, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28734815/progressive-macula-vessel-density-loss-in-primary-open-angle-glaucoma-a-longitudinal-study
#6
Takuhei Shoji, Linda M Zangwill, Tadamichi Akagi, Luke J Saunders, Adeleh Yarmohammadi, Patricia Isabel C Manalastas, Rafaella C Penteado, Robert N Weinreb
PURPOSE: To characterize the rate of macula vessel density loss in primary open angle glaucoma (POAG), glaucoma suspect, and healthy eyes. DESIGN: Longitudinal, observational cohort from the Diagnostic Innovations in Glaucoma Study. METHODS: One hundred eyes (32 POAG, 30 glaucoma suspect and 38 healthy) followed for at least one year with optical coherence tomography angiography (OCT-A) imaging on at least two visits were included. Vessel density was calculated in the macula superficial layer...
July 19, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28734812/quantitative-retinal-vascular-changes-in-obstructive-sleep-apnea
#7
Jessica Y Tong, Mojtaba Golzan, Dana Georgevsky, Jonathan P Williamson, Stuart L Graham, Claude S Farah, Clare L Fraser
PURPOSE: To examine the relationship between both static and dynamic retinal vascular caliber and the severity of obstructive sleep apnea (OSA). DESIGN: Prospective cross-sectional study. METHODS: Adult patients undergoing diagnostic polysomnography studies at a private Australian university teaching hospital were recruited. OSA severity was defined by the apnea-hypopnea index (AHI): severe >30, moderate >15-30, mild 5-15, and controls <5...
July 19, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28734810/retinal-pigment-epithelium-humps-in-high-myopia
#8
Alessandro Marchese, Adriano Carnevali, Riccardo Sacconi, Teresa Centoducati, Lea Querques, Francesco Bandello, Giuseppe Querques
PURPOSE: To report on the presence of retinal pigment epithelium (RPE) humps in high myopia, and to describe the distinctive features from pathological PEDs and choroidal neovascularizations (CNVs). DESIGN: Retrospective cross-sectional study. METHODS: Charts and imaging studies of highly myopic patients presenting between September 2015 and February 2017 at a university teaching hospital were consecutively reviewed. All patients underwent spectral domain optical coherence tomography (OCT)...
July 19, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28734674/retinal-exposure-to-high-glucose-condition-modifies-the-gabaergic-system-regulation-by-nitric-oxide
#9
R Carpi-Santos, R S Maggesissi, M P Von Seehausen, K C Calaza
Diabetic retinopathy is a severe retinal complication that diabetic patients are susceptible to present. Although this disease is currently characterized as a microvascular disease, there is growing evidence that neural changes occur and maybe precede vascular impairments. Using chicken retina, an avascular tissue with no direct contact with blood vessels and neural retina, this study aimed to evaluate the influence of acute exposure to high glucose concentration in the retinal GABAergic system, and the role of nitric oxide (NO) in this modulation...
July 19, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28734535/transcatheter-arterial-embolization-of-abnormal-vessels-as-a-treatment-for-lateral-epicondylitis-refractory-to-conservative-treatment-a-pilot-study-with-a-2-year-follow-up
#10
Wataru Iwamoto, Yuji Okuno, Noboru Matsumura, Takao Kaneko, Hiroyasu Ikegami
BACKGROUND: Abnormal vessels and accompanying nerves are possible sources of pain with lateral epicondylitis. The purpose of this study was to describe the safety and efficacy of transcatheter arterial embolization (TAE) for lateral epicondylitis resistant to conservative treatment. METHODS: This prospective study was conducted in 24 patients with lateral epicondylitis resistant to conservative treatments for more than 3 months, with a symptom duration longer than 6 months, and with moderate to severe pain who were treated with TAE between March 2013 and October 2014...
August 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28734530/joint-optic-disc-and-cup-boundary-extraction-from-monocular-fundus-images
#11
Arunava Chakravarty, Jayanthi Sivaswamy
BACKGROUND AND OBJECTIVE: Accurate segmentation of optic disc and cup from monocular color fundus images plays a significant role in the screening and diagnosis of glaucoma. Though optic cup is characterized by the drop in depth from the disc boundary, most existing methods segment the two structures separately and rely only on color and vessel kink based cues due to the lack of explicit depth information in color fundus images. METHODS: We propose a novel boundary-based Conditional Random Field formulation that extracts both the optic disc and cup boundaries in a single optimization step...
August 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28734438/extracardiac-fontan-operation-through-a-right-thoracotomy
#12
Suvro S Sett, Rocco J Lafaro
An extracardiac Fontan operation through a right thoracotomy incision is an alternative approach in children who have an ascending aorta that is in close proximity to the sternum, as in aortic atresia or transposed great vessels, and in those who have had prior mediastinitis.
August 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28734332/retinal-loop-vessel-captured-with-optical-coherence-tomography-angiography
#13
Eric D Gaier, John B Miller
No abstract text is available yet for this article.
August 2017: Ophthalmology
https://www.readbyqxmd.com/read/28734264/a-small-scale-portable-method-for-extracting-microplastics-from-marine-sediments
#14
Rachel L Coppock, Matthew Cole, Penelope K Lindeque, Ana M Queirós, Tamara S Galloway
Microplastics (plastic particles, 0.1 μm-5 mm in size) are widespread marine pollutants, accumulating in benthic sediments and shorelines the world over. To gain a clearer understanding of microplastic availability to marine life, and the risks they pose to the health of benthic communities, ecological processes and food security, it is important to obtain accurate measures of microplastic abundance in marine sediments. To date, methods for extracting microplastics from marine sediments have been disadvantaged by complexity, expense, low extraction efficiencies and incompatibility with very fine sediments...
July 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28734194/high-yield-one-pot-production-of-18-f-fch-via-a-modified-tracerlab-fxfn-module
#15
Ya-Yao Huang, Chia-Ling Tsai, Hsiang-Ping Wen, Kai-Yuan Tzen, Ruoh-Fen Yen, Chyng-Yann Shiue
INTRODUCTION: [(18)F]Fluoromethylcholine ([(18)F]FCH) is a potent tumors imaging agent. In order to fulfill the demand of pre-clinical and clinical studies, we have developed an automated high yield one-pot synthesis of this potent tumors imaging agent. METHODS: [(18)F]FCH was synthesized using a modified TRACERlab FxFN module. Briefly, dibromomethane (10% in CH3CN) was fluorinated with K[(18)F]/K 2.2.2 in a glassy carbon reaction vessel at 120°C for about 5min to generate [(18)F]fluorobromomethane ([(18)F]FBM)...
July 15, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28734077/integrative-studies-implicate-matrix-metalloproteinase-12-as-a-culprit-gene-for-large-artery-atherosclerotic-stroke
#16
Hovsep Mahdessian, Ljubica Perisic Matic, Mariette Lengquist, Karl Gertow, Bengt Sennblad, Damiano Baldassarre, Fabrizio Veglia, Steve E Humphries, Rainer Rauramaa, Ulf de Faire, Andries J Smit, Philippe Giral, Sudhir Kurl, Elmo Mannarino, Elena Tremoli, Anders Hamsten, Per Eriksson, Ulf Hedin, Anders Mälarstig
BACKGROUND: Ischemic stroke and coronary heart disease are important contributors to the global disease burden and share atherosclerosis as the main underlying cause. Recent evidence from a genome-wide association study (GWAS) suggested that single nucleotide polymorphisms (SNP) near the MMP12 gene at chromosome 11q22.3 were associated with large-vessel ischemic stroke. Here we evaluated and extended these results by examining the relationship between MMP12 and atherosclerosis in clinical and experimental studies...
July 22, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28734035/vector-flow-imaging-techniques-an-innovative-ultrasonographic-technique-for-the-study-of-blood-flow
#17
Alfredo Goddi, Marianna Fanizza, Chandra Bortolotto, Maria Vittoria Raciti, Ilaria Fiorina, Xujin He, Yigang Du, Fabrizio Calliada
Doppler ultrasonography is routinely used to identify abnormal blood flow. Nevertheless, conventional Doppler can be used to determine only the axial component of blood flow velocity and is angle dependent. A new method of multidimensional angle-independent estimation of flow velocity, called Vector Flow Imaging (VFI), has been proposed. It quantitatively evaluates the true velocity vector's amplitude and direction at any location into a vessel and displays a more intuitive depiction of the flow movements. High frame rate VFI, based on plane wave imaging, allows a detailed dynamic visualization of complex flow by showing even transient events, otherwise undetectable...
July 21, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28733977/molecular-classification-of-tumor-cells-in-a-patient-with-intravascular-large-b-cell-lymphoma
#18
W M Bauer, M C Aichelburg, J Griss, C Skrabs, I Simonitsch-Klupp, A I Schiefer, H Kittler, U Jäger, M Zeyda, R Knobler, G Stingl
BACKGROUND: Intravascular large B-cell lymphoma (IVLBCL) is a rare type of extranodal large B-cell lymphoma. It is characterized by the proliferation of tumour cells exclusively intraluminally in small blood vessels of different organs. The clinical manifestation depends on the type of organ affected, additionally, a haemophagocytic syndrome can be observed in some patients. OBJECTIVE: Due to the rarity of this lymphoma and in spite of detailed immunohistochemical investigations the exact nosology of this cancer is only incompletely understood...
July 22, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28733974/impact-of-diabetes-mellitus-on-procedural-and-one-year-clinical-outcomes-following-treatment-of-severely-calcified-coronary-lesions-with-the-orbital-atherectomy-system-a-subanalysis-of-the-orbit-ii-study
#19
Michael S Lee, Brad J Martinsen, Arthur C Lee, Ann N Behrens, Richard A Shlofmitz, Christopher Y Kim, Jeffrey W Chambers
OBJECTIVES: The goal of the study was to investigate the safety and efficacy of the coronary orbital atherectomy system to treat severe coronary artery calcification (CAC) prior to stent placement in diabetic and non-diabetic patients. BACKGROUND: The ORBIT II study reported the safety and efficacy of orbital atherectomy treatment in 443 patients with severe CAC. Percutaneous coronary intervention in diabetic patients is associated with an increased risk of major adverse cardiac events (MACE) compared with non-diabetics...
July 22, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28733923/cardiovascular-mechanics-in-the-early-stages-of-pulmonary-hypertension-a-computational-study
#20
Sebastián Acosta, Charles Puelz, Béatrice Rivière, Daniel J Penny, Ken M Brady, Craig G Rusin
We formulate and study a new mathematical model of pulmonary hypertension. Based on principles of fluid and elastic dynamics, we introduce a model that quantifies the stiffening of pulmonary vasculature (arteries and arterioles) to reproduce the hemodynamics of the pulmonary system, including physiologically consistent dependence between compliance and resistance. This pulmonary model is embedded in a closed-loop network of the major vessels in the body, approximated as one-dimensional elastic tubes, and zero-dimensional models for the heart and other organs...
July 21, 2017: Biomechanics and Modeling in Mechanobiology
keyword
keyword
101420
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"