keyword
MENU ▼
Read by QxMD icon Read
search

magnetic resonance

keyword
https://www.readbyqxmd.com/read/28330096/characterization-of-pyocyanin-with-radical-scavenging-and-antibiofilm-properties-isolated-from-pseudomonas-aeruginosa-strain-btry1
#1
M Laxmi, Sarita G Bhat
A biomolecule namely pyocyanin was isolated from Pseudomonas aeruginosa (BTRY1). It was confirmed by UV-Vis spectrum with absorption maxima at 270 nm and was further characterized using Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR). Spectroscopy analyses showed the presence of relevant bonds in their respective structures. Although pyocyanin had antihemolytic, antioxidant and antibiofilm activities against food pathogens, it showed no observable cytotoxicity, and thus proposed for potential use in the preservation of food...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330019/facial-nerve-tractography-a-new-tool-to-detect-perineural-invasion-in-parotid-cancers
#2
René-Charles Rouchy, Arnaud Attyé, Irène Troprès, Maud Medici, Adrian Kastler, Christian Righini, Alexandre Krainik
PURPOSE: To determine whether magnetic resonance (MR) tractography of facial nerve (VIIn) is useful to detect perineural invasion in case of parotid cancers. MATERIALS AND METHODS: Thirty patients, aged 18 or over, were enrolled in this prospective study between December 2013 and March 2016 (IRB 5891), with a diagnosis of parotid tumors (15 malignant, 15 benign). They have undergone preoperative MR scans (3.0-T) before surgical management. The parameters of the diffusion-weighted (DW) sequence were b-value of 1000s/mm(2); 32 directions; voxel size: 2mm isotropic; scan time: 9' The post-processing generates whole-neck constrained spherical deconvolution (CSD)-based tractography data and super-resolution track-weighted imaging (TWI) technique...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329999/bilateral-cystic-coloboma-with-microphtalmos-and-eyelid-agenesis-us-and-mri-findings
#3
Youssef Omor, Benjamin Dhaene, Veronique Toppet, Marie Cassart, Patrice Jissendi-Tchofo
INTRODUCTION: The combination of bilateral microphthalmos, cystic coloboma and eyelid agenesis is rare. The definite diagnosis of this malformation is established by fundoscopic examination and confirmed by imaging modalities such as ultrasonography (US) and magnetic resonance imaging (MRI). This disorder may be associated with specific chromosomal abnormalities. CASE REPORT: A 1-week-old male newborn was referred for bilateral eyelid agenesis. He was born at term by caesarean for foetal distress, after an uneventful gestation...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329979/imaging-of-neck-masses-in-the-neonate
#4
Amina Ben Salem, Abir Khalfalli, Saida Jerbi, Wissem Harzallah, Fatma-Zohra Chioukh, Chiraz Hafsa, Ines Mezhoud
INTRODUCTION: Neck masses occurring in the neonatal period and early infancy consist of vascular tumors, vascular malformations, benign and malignant soft tissue tumors and other developmental lesions. Although some lesions can be diagnosed on clinical grounds, others can only be diagnosed by imaging. Beyond diagnosis, imaging plays a significant role in evaluating the location and extent of a lesion for possible intervention. METHODS AND MATERIALS: Clinical series descriptive study with a retrospective examination of neonates with masses of the neck...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329953/imaging-feature-in-pres-syndrome-report-of-6-cases
#5
H El Mhabrech, S Karma, F Jbeli, M Dakkem, A Kraiem, C Hafsa
OBJECTIVES: Posterior reversible encephalopathy syndrome (PRES) is a rare syndrome. The pathophysiology is poorly understood. Computed tomography (CT) and magnetic resonance imaging (MRI) findings are characteristic of the diagnosis and diffusion weighted image has been also suggested having a prognostic value. We report this unusual neurologic complication of peripartumin except any pre-existent pathology of the pregnancy. MATERIEL AND METHODS: CT, MR findings and relevant clinical data of the patients were retrospectively reviewed on 5 cases between 2011 and 2012 in our radiologic department...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329917/preoperative-radiologic-evaluation-of-cholangiocarcinoma
#6
REVIEW
So Yeon Kim
In patients with cholangiocarcinoma, surgical resection with curative intent is the only way to achieve cure. Since surgical resection of cholangiocarcinomas is technically demanding, determination of resectability and accurate preoperative staging are crucial. For these purposes, high quality imaging including multidetector computed tomography and magnetic resonance imaging with magnetic resonance cholangiopancreaticography, is mandatory. This article will present recent advances in imaging techniques for cholangiocarginomas, potential pitfalls in imaging evaluation, and a checklist for preoperative radiologic assessment of resectability in these patients with an emphasis on perihilar cholangiocarinoma...
March 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28329842/magnetic-resonance-imaging-reveals-progressive-brain-injury-in-rats-acutely-intoxicated-with-diisopropylfluorophosphate
#7
Brad A Hobson, Sílvia Sisó, Douglas J Rowland, Danielle J Harvey, Donald A Bruun, Joel R Garbow, Pamela J Lein
Acute intoxication with organophosphates (OPs) can trigger seizures that progress to status epilepticus, and survivors often exhibit chronic neuropathology, cognitive impairment, affective disorders and/or electroencephalographic abnormalities. Understanding how acute injury transitions to persistent neurological sequelae is critical to developing medical countermeasures for mitigating damage following OP-induced seizures. Here, we used in vivo magnetic resonance imaging (MRI) to monitor the spatiotemporal patterns of neuropathology for one month after acute intoxication with diisopropylfluorophosphate (DFP)...
March 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28329801/compact-magnetic-resonance-imaging-systems-novel-cost-effective-tools-for-preclinical-drug-safety-and-efficacy-evaluation
#8
Yuval Ramot, Yael S Schiffenbauer, Robert Maronpot, Abraham Nyska
Practical magnetic resonance imaging for use in investigative and preclinical toxicology studies is now feasible. Newly developed, self-containing imaging systems provide an efficient and cost-effective means to rapidly obtain in vivo and ex vivo magnetic resonance imaging images to improve how we perform toxicology and toxicologic pathology.
January 30, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28329785/beet-root-juice-an-ergogenic-aid-for-exercise-and-the-aging-brain
#9
Meredith Petrie, W Jack Rejeski, Swati Basu, Paul J Laurienti, Anthony P Marsh, James L Norris, Daniel B Kim-Shapiro, Jonathan H Burdette
Background: Exercise has positive neuroplastic effects on the aging brain. It has also been shown that ingestion of beet root juice (BRJ) increases blood flow to the brain and enhances exercise performance. Here, we examined whether there are synergistic effects of BRJ and exercise on neuroplasticity in the aging brain. Methods: Peak metabolic equivalent (MET) capacity and resting-state magnetic resonance imaging functional brain network organization are reported on 26 older (mean age = 65...
November 9, 2016: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329392/evaluation-of-splenic-switch-off-in-a-tertiary-imaging-centre-validation-and-assessment-of-utility
#10
Alice Hosking, Marinos Koulouroudias, Filip Zemrak, James C Moon, Alexia Rossi, Aaron Lee, Michael R Barnes, Redha Boubertakh, Francesca Pugliese, Charlotte Manisty, Steffen E Petersen
Aims: Adenosine can induce splenic vasoconstriction (splenic switch-off, SSO). In this study, we aim to evaluate the utility of identifying a lack of SSO for detecting false-negative adenosine stress perfusion cardiac magnetic resonance (CMR) scans. Methods and results: We visually analysed 492 adenosine stress perfusion CMR scans reported as negative in a cohort of patients with no previous history of coronary artery disease. A lack of SSO was identified in 11%...
October 6, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329387/map-to-the-future-of-cardiac-magnetic-resonance-in-myocarditis
#11
Philip Haaf, Peter T Buser
No abstract text is available yet for this article.
March 8, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329376/comparison-of-the-prognostic-value-of-negative-non-invasive-cardiac-investigations-in-patients-with-suspected-or-known-coronary-artery-disease-a-meta-analysis
#12
Martijn W Smulders, Caroline Jaarsma, Patricia J Nelemans, Sebastiaan C A M Bekkers, Jan Bucerius, Tim Leiner, Harry J G M Crijns, Joachim E Wildberger, Simon Schalla
Aims: To compare the prognostic value of negative non-invasive cardiac investigations (coronary computed tomographic angiography [CCTA], cardiovascular magnetic resonance [CMR], exercise electrocardiographic testing [EET], positron emission tomography [PET], stress-echocardiography [SE], and single-photon emission tomography [SPECT]) in patients with suspected or known coronary artery disease (CAD) and to explore the effect of adjustment for population event risk and presence of CAD. Methods and results: MEDLINE/PubMed database, EMBASE and Cochrane Library were searched from January-1990 to April-2015 for studies reporting annual event rates (AER) of myocardial infarction (MI) and cardiac death...
February 27, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329371/rare-spinal-cord-infarction-in-a-patient-with-acute-type-b-aortic-dissection
#13
Yuji Sekine, Takeshi Nishina, Yuichi Ueda
A 69-year-old man was admitted to our hospital with acute epigastric discomfort and subsequent paraplegia. Computed tomography revealed acute type B aortic dissection with a thrombosed false lumen. Magnetic resonance imaging did not reveal spinal cord infarction. Paraplegia resolved completely within 1 h. However, on the following day, the patient developed motor impairment in the left leg, sensory disorder of the bilateral legs and urinary retention. The symptoms gradually improved with conservative medical therapy...
February 20, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28329359/larger-lateral-prefrontal-cortex-volume-predicts-better-exercise-adherence-among-older-women-evidence-from-two-exercise-training-studies
#14
John R Best, Bryan K Chiu, Peter A Hall, Teresa Liu-Ambrose
Background: Recent research has suggested an important role of lateral prefrontal cortex (lPFC) in consistent implementation of positive health behaviors and avoidance of negative health behaviors. Methods: We examined whether gray matter volume in the lPFC prospectively predicts exercise class attendance among older women (n = 122) who underwent either a 52-week or 26-week exercise training intervention. Structural magnetic resonance imaging determined gray matter volume at baseline...
March 17, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329331/natural-history-of-moderately-dilated-tubular-ascending-aorta-implications-for-determining-the-optimal-imaging-interval%C3%A2
#15
Kay-Hyun Park, Suryeun Chung, Dong Jung Kim, Jun Sung Kim, Cheong Lim
OBJECTIVES: For a moderately dilated ascending aorta (diameter 35-54 mm), current guidelines recommend continuous annual or semi-annual examinations with computed tomography or magnetic resonance imaging. However, few data have shown the yield and benefit of such a protocol. This study aimed to investigate the fate of a moderately dilated ascending aorta and thereby determine the adequate imaging interval. METHODS: In our institutional database, we identified adult patients having an ascending aortic diameter ≥40 mm in contrast-enhanced computed tomography and follow-up imaging(s) after ≥1 year...
February 20, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28329299/rational-and-design-of-eurocrt-an-international-observational-study-on-multi-modality-imaging-and-cardiac-resynchronization-therapy
#16
Erwan Donal, Victoria Delgado, Julien Magne, Chiara Bucciarelli-Ducci, Christophe Leclercq, Bernard Cosyns, Marta Sitges, Thor Edvardsen, Elif Sade, Ivan Stankovic, Eustachio Agricola, Maurizio Galderisi, Patrizio Lancellotti, Alfredo Hernandez, Sven Plein, Denisa Muraru, Ehud Schwammenthal, Gerhard Hindricks, Bogdan A Popescu, Gilbert Habib
Aims: Assessment of left ventricular (LV) volumes and ejection fraction (LVEF) with cardiac imaging is important in the selection of patients for cardiac resynchronization therapy (CRT). Several observational studies have explored the role of imaging-derived LV dyssynchrony parameters to predict the response to CRT, but have yielded inconsistent results, precluding the inclusion of imaging-derived LV dyssynchrony parameters in current guidelines for selection of patients for CRT. METHODS: The EuroCRT is a large European multicentre prospective observational study led by the European Association of Cardiovascular Imaging...
February 27, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329289/repair-of-calcified-left-ventricular-pseudoaneurysm-of-long-duration
#17
Orhan Saim Demirtürk, Elif Karadeli, Utku Alemdaroglu, Mustafa Yilmaz
Cardiac pseudoaneurysm is a contained rupture of the myocardium limited by pericardial adhesions or the epicardial wall. Cardiac pseudoaneurysm may cause sudden death with a mortality of 30-45% in the first year, mostly resulting from rupture. Coronal and axial T2-weighted magnetic resonance images of a 65-year-old male patient admitted with dyspnoea, coughing and chest pain, present for the last 10 days, revealed a large pseudoaneursym of the left ventricle. Coronary bypass and left ventricular restoration operation was performed...
February 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28329275/tissue-characterization-by-t1-and-t2-mapping-cardiovascular-magnetic-resonance-imaging-to-monitor-myocardial-inflammation-in-healing-myocarditis
#18
S Bohnen, U K Radunski, G K Lund, F Ojeda, Y Looft, M Senel, L Radziwolek, M Avanesov, E Tahir, C Stehning, B Schnackenburg, G Adam, S Blankenberg, K Muellerleile
Aims: Monitoring disease activity in myocarditis is important for tailored therapeutic strategies. This study evaluated the ability of T1 and T2 mapping cardiovascular magnetic resonance (CMR) to monitor the course of myocardial inflammation in healing myocarditis. Methods and results: Forty-eight patients with strictly defined acute myocarditis underwent CMR at 1.5 T in the acute stage, at 3-months (n = 39), and at 12-months follow-up (FU) (n = 21). Normal values were obtained in a control group of 27 healthy subjects...
March 8, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329267/right-ventricular-recovery-after-bilateral-lung-transplantation-for-pulmonary-arterial-hypertension%C3%A2
#19
Thomas M Gorter, Erik A M Verschuuren, Dirk J van Veldhuisen, Elke S Hoendermis, Michiel E Erasmus, Harm J Bogaard, Anton Vonk Noordegraaf, Rolf M F Berger, Joost P van Melle, Tineke P Willems
OBJECTIVES: Pulmonary arterial hypertension (PAH) is a progressive and often fatal disease characterized by increased pulmonary vascular resistance (PVR) and right ventricular (RV) failure. End-stage PAH is often an indication for a lung transplant (LTX). Our goal was to study ventricular recovery using cardiac magnetic resonance imaging late after LTX. METHODS: We studied 10 patients with PAH who underwent isolated bilateral LTX. RV and left ventricular (LV) volumes, function and mass were measured...
March 3, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28329138/small-intestinal-submucosa-tricuspid-valve-tube-graft-shows-growth-potential-remodelling-and-physiological-valve-function-in-a-porcine-model%C3%A2
#20
Diana M Ropcke, Christine Ilkjaer, Marcell J Tjornild, Soren N Skov, Steffen Ringgaard, Vibeke E Hjortdal, Sten L Nielsen
OBJECTIVES: Tricuspid valve reconstruction using small intestinal submucosal extracellular matrix (ECM) designed as a tube graft is possible in severe valve pathology. Using cardiac magnetic resonance imaging (MRI) and digital photograph imaging, valves were evaluated after 6 months in a porcine model. METHODS: Ten 60 kg pigs received a tricuspid valve tube graft. A baseline MRI was performed after 2 weeks ( n  = 8). A follow-up MRI was performed in three of five 6 months' survivors to assess function and haemodynamics of the tricuspid tube graft...
February 27, 2017: Interactive Cardiovascular and Thoracic Surgery
keyword
keyword
3508
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"