keyword
MENU ▼
Read by QxMD icon Read
search

Tissue doppler imaging

keyword
https://www.readbyqxmd.com/read/28721692/left-ventricular-mechanics-are-affected-in-children-with-celiac-disease-a-study-based-on-two-dimensional-speckle-tracking-echocardiography
#1
Murat Deveci, Ayşen Uncuoğlu Aydoğan, Gürkan Altun, Özlem Kayabey, Okan Tuğral, Kadir Babaoğlu
BACKGROUND: An association between cardiomyopathy and celiac disease has been reported, but not frequently. We examined the effects on cardiac mechanics in children with celiac disease (CD) by two-dimensional speckle tracking echocardiography (2DSTE). METHODS: Eighty-one children with CD were compared with a control group comprising 51 healthy children by echocardiographic examination. Children with CD who had been on gluten-free diet for more than 6 months were divided into two different groups: group 1 was positive for serum antitissue transglutaminase antibody (n=48), and group 2 was negative for serum antitissue transglutaminase antibody (n=33)...
July 18, 2017: Echocardiography
https://www.readbyqxmd.com/read/28715153/automated-analysis-of-fetal-cardiac-function-using-color-tissue-doppler-imaging
#2
L Herling, J Johnson, K Ferm-Widlund, F Bergholm, P Lindgren, S-E Sonesson, G Acharya, M Westgren
OBJECTIVES: Our main objective was to evaluate the feasibility of an automated analysis of fetal myocardial velocity recordings obtained by color tissue Doppler imaging (cTDI). METHODS: This was a prospective cross-sectional observational study of 107 singleton pregnancies in ≥41 weeks of gestation. Myocardial velocity recordings were obtained by cTDI in a long-axis four-chamber view of the fetal heart. Regions of interest (ROI) were placed in the septum, right (RV) and left ventricular (LV) walls at the level of the atrioventricular plane (AV-plane)...
July 17, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28705247/detecting-impaired-myocardial-relaxation-in-sepsis-with-a-novel-tissue-doppler-parameter-septal-e-s
#3
David J Clancy, Michel Slama, Stephen Huang, Timothy Scully, Anthony S McLean, Sam R Orde
BACKGROUND: Left ventricular diastolic dysfunction is associated with mortality outcomes in severe sepsis and septic shock. There are ongoing issues with diagnosing diastolic dysfunction in this cohort, partly owing to the poor applicability of traditional parameters in the hyperdynamic circulation. In this feasibility study, we sought to assess the utility of a novel parameter (septal e'/s') to identify diastolic dysfunction in patients with severe sepsis and septic shock who had normal systolic function against the 2016 American Society Echocardiography and European Association of Cardiovascular Imaging (ASE/EACI) guidelines on diastolic dysfunction...
July 14, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28704481/renal-auto-transplantation-promotes-cortical-microvascular-network-remodeling-in-a-preclinical-porcine-model
#4
Souleymane Maïga, Geraldine Allain, Thierry Hauet, Jerome Roumy, Edouard Baulier, Michel Scepi, Manuel Dierick, Luc Van Hoorebeke, Patrick Hannaert, Franck Guy, Frederic Favreau
The vascular network is a major target of ischemia-reperfusion, but has been poorly investigated in renal transplantation. The aim of this study was to characterize the remodeling of the renal vascular network that follows ischemia-reperfusion along with the most highly affected cortex section in a preclinical renal transplantation model. There were two experimental groups. The first was a grafted kidney group consisting of large white pigs for which the left kidney was harvested, cold flushed, preserved for 24 h in the University of Wisconsin's preservation solution, and then auto-transplanted (n = 5); the right kidney was removed to mimic the situation of human kidney transplantation...
2017: PloS One
https://www.readbyqxmd.com/read/28685679/clinical-approach-to-diabetic-cardiomiopathy-a-review-of-human-studies
#5
Roberto Tarquini, Laura Pala, Simona Brancati, Giulia Vannini, Salvatore De Cosmo, Gianluigi Mazzoccoli, Carlo Maria Rotella
BACKGROUND: Diabetic Cardiomiopathy (DC) has been defined as a distinct entity characterized by the presence of diastolic or systolic cardiac dysfunction in a diabetic patient in the absence of other causes for Cardiomiopathy, such as coronary artery disease (CAD), hypertension (HTN), or valvular heart disease. Diabetes affects every organ in the body and cardiovascular disease accounts for two-thirds of the mortality in the diabetic population. Diabetes-related heart disease occurs in the form of coronary artery disease (CAD), cardiac autonomic neuropathy or DC...
July 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28681443/evaluation-of-the-congenital-supravalvular-aortic-stenosis-by-different-imaging-modalities
#6
Ahmet Guner, Nuri Havan, Sabahattin Gunduz, Taylan Akgun, Busra Guvendi, Gokhan Kahveci
A 36-year-old female was admitted to hospital exhibiting chest pain, dyspnea, and a heart murmur on the right upper sternal border, radiating to both carotid arteries. The blood pressure of the patient's right arm exceeded the pressure in the left by 25 mm Hg (Coanda effect). In spite of laboratory results that did not fall outside the expected range, the left ventricle was revealed to be hypertrophic following electrocardiography. Transthoracic echocardiography revealed a severe supravalvular aortic stenosis (SVAS) with a peak Doppler velocity of 6...
July 6, 2017: Echocardiography
https://www.readbyqxmd.com/read/28678148/effects-of-levosimendan-in-patients-with-severe-functional-mitral-regurgitation-undergoing-mitraclip-implantation
#7
Cristina Giannini, Anna S Petronio, Francesca Fiorelli, Riccardo Liga, Paolo Spontoni, Marco De Carlo, Emilia Marraccini, Andrea Pieroni, Fabio Guarracino
AIM: Percutaneous mitral valve repair (PMVR) with a MitraClip device has been recently introduced as a valuable therapy in high surgical risk patients with functional mitral regurgitation (FMR) who are not responding to currently available medical treatments. Our aim was to assess the clinical, functional and prognostic impact of periprocedural levosimendan administration in patients with end-stage heart failure and FMR undergoing PMVR. METHODS: Between December 2009 and August 2016, 94 consecutive high-risk patients with symptomatic FMR who underwent PMVR with the MitraClip System at our center were enrolled in a prospective registry...
July 3, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28677820/calcifying-epithelioma-of-malherbe-pilomatrixoma-clinical-and-sonographic-features
#8
Sai-Feng Lin, Shi-Hao Xu, Zuo-Liu Xie
PURPOSE: The purpose of this study was to describe the clinical and sonographic features of calcifying epitheliomas (pilomatrixomas). METHODS: We retrospectively reviewed the clinical data and sonographic appearances of 59 cases of calcifying epitheliomas in 58 patients that were confirmed pathologically. RESULTS: The mean age of the patients was 26 years (range, 5-69 years) and the female-to-male ratio was 1.2. All masses were located in subcutaneous soft tissues...
July 5, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28677661/a-novel-therapeutic-approach-in-the-treatment-of-pulmonary-arterial-hypertension-allium-ursinum-liophylisate-alleviates-symptoms-comparably-to-sildenafil
#9
Mariann Bombicz, Daniel Priksz, Balazs Varga, Andrea Kurucz, Attila Kertész, Akos Takacs, Aniko Posa, Rita Kiss, Zoltan Szilvassy, Bela Juhasz
Right-sided heart failure-often caused by elevated pulmonary arterial pressure-is a chronic and progressive condition with particularly high mortality rates. Recent studies and our current findings suggest that components of Wild garlic (Allium ursinum, AU) may play a role in reducing blood pressure, inhibiting angiotensin-converting enzyme (ACE), as well as improving right ventricle function in rabbit models with heart failure. We hypothesize that AU may mitigate cardiovascular damage caused by pulmonary arterial hypertension (PAH) and has value in the supplementary treatment of the complications of the disease...
July 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28671917/experimental-simulation-of-clinical-borderline-situations-in-temporal-bone-specimens-after-ossiculoplasty
#10
Till F Jakob, Jan Kromeier, Tobias Baumann, Jens Pfeiffer, Marcus Neudert, Roland Laszig, Thomas Zahnert, Christian Offergeld
OBJECTIVES: One reason for insufficient hearing improvement with a distinct air-bone gap after ossiculoplasty with implantation of partial or total ossicular replacement prostheses can be the dislocation or minimal shifting of the prosthesis. The aim of this study was the simulation of common clinical borderline situations with minimal shifting of the prosthesis in temporal bone specimens after ossiculoplasty. It was furthermore the goal to identify these specific situations through imaging by cone beam computed tomography (cbCT) and direct visual inspection using the operation microscope...
June 30, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28671118/cerebral-hemodynamics-in-mild-cognitive-impairment-a-systematic-review
#11
Lucy Beishon, Victoria J Haunton, Ronney B Panerai, Thompson G Robinson
BACKGROUND: The incidence of dementia is projected to rise over the coming decades, but with no sensitive diagnostic tests available. Vascular pathology precedes the deposition of amyloid and is an attractive early target. OBJECTIVE: The aim of this review was to investigate the use of cerebral hemodynamics and oxygenation as a novel biomarker for mild cognitive impairment (MCI), focusing on transcranial Doppler ultrasonography (TCD) and near-infrared spectroscopy (NIRS)...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28670158/estimation-of-diastolic-filling-pressure-with-cardiac-ct-in-comparison-with-echocardiography-using-tissue-doppler-imaging-determination-of-optimal-ct-reconstruction-parameters
#12
Ji-Sun Hwang, Heon Lee, Bora Lee, Soo-Jeong Lee, Sung Shick Jou, Hyun Kyung Lim, Jon Suh
OBJECTIVE: To determine the optimal CT image reconstruction parameters for the measurement of early transmitral peak velocity (E), early peak mitral septal tissue velocity (E'), and E / E'. MATERIALS AND METHODS: Forty-six patients underwent simultaneous cardiac CT and echocardiography on the same day. Four CT datasets were reconstructed with a slice thickness/interval of 0.9/0.9 mm or 3/3 mm at 10 (10% RR-interval) or 20 (5% RR-interval) RR-intervals. The E was calculated by dividing the peak transmitral flow (mL/s) by the corresponding mitral valve area (cm(2))...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28663764/transvenous-versus-open-chest-lead-placement-for-resynchronization-therapy-in-patients-with-heart-failure-comparison-of-ventricular-electromechanical-synchronicity
#13
Hai-Bo Zhang, Xu Meng, Jie Han, Yan Li, Ye Zhang, Teng-Yong Jiang, Ying-Xin Zhao, Yu-Jie Zhou
BACKGROUND: Transvenous lead placement is the standard approach for left ventricular (LV) pacing in cardiac resynchronization therapy (CRT), while the open chest access epicardial lead placement is currently the most frequently used second choice. Our study aimed to compare the ventricular electromechanical synchronicity in patients with heart failure after CRT with these two different LV pacing techniques. METHODS: We enrolled 33 consecutive patients with refractory heart failure secondly to dilated cardiomyopathy who were eligible for CRT in this study...
April 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28660306/shear-wave-velocity-measurement-of-upper-trapezius-muscle-by-color-doppler-shear-wave-imaging
#14
Atsushi Yamamoto, Yoshiki Yamakoshi, Takashi Ohsawa, Hitoshi Shitara, Tsuyoshi Ichinose, Hiroyuki Shiozawa, Tsuyoshi Sasaki, Noritaka Hamano, Yasushi Yuminaka, Kenji Takagishi
PURPOSE: Skeletal muscle stiffness is thought to be the result of increased tissue hardness, but measurement accuracy has been dependent on operator technique. We have proposed a novel shear wave real-time imaging method (color Doppler shear wave imaging: CD SWI) with continuous shear waves excited from the tissue surface by a mechanical vibrator. METHODS: Using the method, shear wave velocity was measured for the upper trapezius muscle. Adaptive shear wave velocity measurement by means of quality estimation of shear wave wavefront was adopted...
June 28, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28656317/-imaging-representation-of-peripheral-veins
#15
REVIEW
B Voigts, N Abolmaali, C Stelzner, S M Schellong
Several techniques are available for imaging of the venous system of the legs and pelvic region. In cases of suspected deep leg vein thrombosis B‑mode compression ultrasound is applied. Its accuracy is sufficient to either confirm or exclude the diagnosis with certainty. For examination of the iliac veins, however, flow information has to be added by pulsed wave (PW) Doppler or color Doppler sonography. In cases of suspected arm vein thrombosis, ultrasound is also the method of choice. The more proximal or the central parts of the venous system, i...
June 27, 2017: Der Internist
https://www.readbyqxmd.com/read/28655190/right-ventricular-function-during-exercise-in-children-after-heart-transplantation
#16
B Cifra, C T Morgan, A Dragulescu, V C Guerra, C Slorach, M K Friedberg, C Manlhiot, B W McCrindle, A I Dipchand, L Mertens
Aims: Right ventricular (RV) dysfunction is a common problem after heart transplant (HTx). In this study, we used semi-supine bicycle ergometry (SSBE) stress echocardiography to evaluate RV systolic and diastolic reserve in paediatric HTx recipients. Methods and results: Thirty-nine pediatric HTx recipients and 23 controls underwent stepwise SSBE stress echocardiography. Colour tissue doppler imaging (TDI) peak systolic (s') and peak diastolic (e') velocities, myocardial acceleration during isovolumic contraction (IVA), and RV free wall longitudinal strain were measured at incremental heart rates (HR)...
June 23, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28651099/brain-shift-compensation-using-intraoperative-ultrasound-and-constraint-based-biomechanical-simulation
#17
Fanny Morin, Hadrien Courtecuisse, Ingerid Reinertsen, Florian Le Lann, Olivier Palombi, Yohan Payan, Matthieu Chabanas
PURPOSE: During brain tumor surgery, planning and guidance are based on preoperative images which do not account for brain-shift. However, this deformation is a major source of error in image-guided neurosurgery and affects the accuracy of the procedure. In this paper, we present a constraint-based biomechanical simulation method to compensate for craniotomy-induced brain-shift that integrates the deformations of the blood vessels and cortical surface, using a single intraoperative ultrasound acquisition...
June 15, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28650810/expanding-acquisition-and-clutter-filter-dimensions-for-improved-perfusion-sensitivity
#18
Min Woo Kim, Craig K Abbey, Jamila Hedhli, Lawrence W Dobrucki, Michael F Insana
A method is explored for increasing the sensitivity of power-Doppler imaging without contrast enhancement. We acquire 1-10 s of echo signals and arrange it into a 3-D spatiotemporal data array. An eigenfilter developed to preserve all three dimensions of the array yields power estimates for blood flow and perfusion that are well separated from tissue clutter. This method is applied at high frequency (24 MHz pulses) to a murine model of an ischemic hindlimb. We demonstrate enhancements to tissue perfusion maps in normal and ischemic tissues...
June 26, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28648919/myocardial-strain-rate-by-anatomic-doppler-spectrum-first-clinical-experience-using-retrospective-spectral-tissue-doppler-from-ultra-high-frame-rate-imaging
#19
Lars Christian Naterstad Lervik, Birger Brekke, Svein Arne Aase, Mai Tone Lønnebakken, Dordi Stensvåg, Brage H Amundsen, Hans Torp, Asbjorn Støylen
Strain rate imaging by tissue Doppler (TDI) is vulnerable to stationary reverberations and noise (clutter). Anatomic Doppler spectrum (ADS) presents retrospective spectral Doppler from ultra-high frame rate imaging (UFR-TDI) data for a region of interest, that is, ventricular wall or segment, at one time instance. This enables spectral assessment of strain rate (SR) without the influence of clutter. In this study, we assessed SR with ADS and conventional TDI in 20 patients with a recent myocardial infarction and 10 healthy volunteers...
June 22, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28648418/longitudinal-ventricular-systolic-dysfunction-in-patients-with-very-severe-obstructive-sleep-apnea-a-case-control-study-using-speckle-tracking-imaging
#20
Mithun Jacob Varghese, Gautam Sharma, Garima Shukla, Sandeep Seth, Sundeep Mishra, Anupama Gupta, Vinay Kumar Bahl
OBJECTIVE: Obstructive sleep apnea (OSA) is a prevalent condition that is increasingly recognized to be associated with cardiovascular disease. We aimed to investigate the subclinical systolic ventricular dysfunction of patients with OSA using novel speckle tracking echocardiographic (STE) techniques. METHODS: This study included 31 patients of polysomnography proven very severe OSA [Apnea Hypopnea Index(AHI) >40] and an equal number of matched population with no OSA as controls...
May 2017: Indian Heart Journal
keyword
keyword
53673
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"