Filtered By:
Specialty: Radiology
Condition: Aortic Stenosis

This page shows you your search results in order of relevance.

Order by Relevance | Date

Total 35 results found since Jan 2013.

Aortic Valve Area, Stroke Volume, Left Ventricular Hypertrophy, Remodeling, and Fibrosis in Aortic Stenosis Assessed by Cardiac Magnetic Resonance Imaging: Comparison Between High and Low Gradient and Normal and Low Flow Aortic Stenosis Valvular Heart Disease
Conclusions— CMR confirmed overall accuracy of echocardiographic classification of AS but demonstrated that LG/LF and LG/NF AS have larger AVA, less LV hypertrophy, and similar focal fibrosis compared with HG/LF AS. This challenges the view that LG/LF AS is a more advanced state of AS.
Source: Circulation: Cardiovascular Imaging - November 19, 2013 Category: Radiology Authors: Barone-Rochette, G., Pierard, S., Seldrum, S., de Meester de Ravenstein, C., Melchior, J., Maes, F., Pouleur, A.-C., Vancraeynest, D., Pasquet, A., Vanoverschelde, J.-L., Gerber, B. L. Tags: CT and MRI, Echocardiography Valvular Heart Disease Source Type: research

Association Of Stroke With Pattern Of Aortic Leaflet And Left Ventricular Outflow Tract Calcifications
Introduction: Stroke is a feared complication of transcatheter aortic valve replacement (TAVR) used for treatment of severe aortic stenosis. The risk of stroke has been associated with leaflet calcification burden. We aimed to investigate whether a specific pattern of aortic leaflet and left ventricular outflow tract (LVOT) calcification is associated with stroke risk.
Source: Journal of Cardiovascular Computed Tomography - July 1, 2021 Category: Radiology Authors: D. Brito, M. Shotwell, P. Agrawal, S. Patibandla, M. Kadiyala, Y. Hamirani, R. Daggubati, B. Raybuck, A. Kawsara, I. Zeb Source Type: research

Significant aortic stenosis associated with poorer functional outcomes in patients with acute ischaemic stroke undergoing endovascular therapy.
Authors: Ngiam NJ, Tan BY, Sia CH, Chan BP, Anil G, Cunli Y, Holmin S, Anderssen T, Poh KK, Yeo LL, Sharma VK PMID: 32340516 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - April 29, 2020 Category: Radiology Tags: Interv Neuroradiol Source Type: research

Accuracy of stroke volume measurement with phase-contrast cardiovascular magnetic resonance in patients with aortic stenosis
Phase contrast (PC) cardiovascular magnetic resonance (CMR) in the ascending aorta (AAo) is widely used to calculate left ventricular (LV) stroke volume (SV). The accuracy of PC CMR may be altered by turbulent...
Source: Journal of Cardiovascular Magnetic Resonance - November 4, 2021 Category: Radiology Authors: Ezequiel Guzzetti, Hugo-Pierre Racine, Lionel Tastet, Myl ène Shen, Eric Larose, Marie-Annick Clavel, Philippe Pibarot and Jonathan Beaudoin Tags: Research Source Type: research

Calcified Cerebral Emboli, A "Do Not Miss" Imaging Diagnosis: 22 New Cases and Review of the Literature FELLOWS' JOURNAL CLUB
CONCLUSIONS: Calcified cerebral emboli are more common than previously assumed, are frequently overlooked or misinterpreted, affect clinical course when diagnosed, and carry substantial risk for recurrent stroke.
Source: American Journal of Neuroradiology - August 14, 2014 Category: Radiology Authors: Walker, B. S., Shah, L. M., Osborn, A. G. Tags: FELLOWS ' JOURNAL CLUB Source Type: research

Low-Flow, Low-Gradient Severe Aortic Stenosis in the Setting of Constrictive Pericarditis: Clinical Characteristics, Echocardiographic Features, and Outcomes Valvular Heart Disease
Conclusions— Our findings highlighted the possibility of CP as a pathophysiological mechanism for low-flow, low-gradient AS. Left ventricular stroke volume index and transaortic gradients were commonly reduced in AS in the setting of CP despite a preserved left ventricular ejection fraction, which may result in underestimation of AS severity. Prior mediastinal radiation, lower left ventricular stroke volume index, and concomitant CP were associated with poorer survival in AS patients.
Source: Circulation: Cardiovascular Imaging - July 14, 2015 Category: Radiology Authors: Tsang, M. Y. C., Choi, J.-O., Borlaug, B. A., Greason, K. L., Cha, S. S., Nishimura, R. A., Oh, J. K. Tags: Pericardial disease, Valvular heart disease, Echocardiography Source Type: research

Lower Transaortic Flow Rate Is Associated With Increased Mortality in Aortic Valve Stenosis
Conclusions In patients with AS without known cardiovascular disease or diabetes, low transaortic FR was independently associated with higher rates of cardiovascular and all-cause mortality. (An Investigational Drug on Clinical Outcomes in Patients With Aortic Stenosis (Narrowing of the Major Blood Vessel of the Heart) (MK-0653A-043 AM4); NCT00092677)
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - August 7, 2017 Category: Radiology Authors: Saeed, S., Senior, R., Chahal, N. S., Lonnebakken, M. T., Chambers, J. B., Bahlmann, E., Gerdts, E. Tags: Original Research Source Type: research

Dynamic changes in aortic impedance after transcatheter aortic valve replacement and its impact on exploratory outcome
AbstractValvulo-arterial impedance (Zva) has been shown to predict worse outcome in medically managed aortic stenosis (AS) patients. We aimed to investigate the association between Zva and left ventricular (LV) adaptation and to explore the predictive value of Zva for cardiac functional recovery and outcome after transcatheter aortic valve replacement (TAVR). We prospectively enrolled 128 patients with AS who underwent TAVR. Zva was calculated as: (systolic blood pressure  + mean transaortic gradient)/stroke volume index). Echocardiographic assessment occurred at baseline, 1-month and 1-year after TAVR. The primary end...
Source: The International Journal of Cardiovascular Imaging - November 1, 2017 Category: Radiology Source Type: research

Two wrongs sometimes do make a right: errors in aortic valve stenosis assessment by same-day Doppler echocardiography and 4D flow MRI
This study aims to systematically verify if the simplified geometry and flow profile of the left ventricular outflow tract (LVOT) assumed in 2D echocardiography is appropriate while examining the utility of 4D flow MRI to assess valvular disease. This prospective study obtained same-day Doppler echocardiography and 4D flow MRI in 37 healthy volunteers (age: 51.9  ± 18.2, 20 females) and 7 aortic stenosis (AS) patients (age: 64.2 ± 9.6, 1 female). Two critical assumptions made in echocardiography for aortic valve area assessment were examined, i.e. the assumption of (1) a circular LVOT shape and (2) a flat velocit...
Source: The International Journal of Cardiovascular Imaging - February 21, 2022 Category: Radiology Source Type: research

Real-time phase contrast magnetic resonance imaging for assessment of haemodynamics: from phantom to patients
Conclusions The real-time sequence is accurate compared to conventional segmented PC-MRI. Its applicability in Afib was shown. Real-time PC-MRI might become a valuable tool in arrhythmia. Key Points • Assessment of haemodynamics is crucial in many cardiac diseases. • Arrhythmias are a major limitation of conventional techniques in cardiac magnetic resonance. • A real-time technique, which allows application in arrhythmia, was validated. ...
Source: European Radiology - March 5, 2016 Category: Radiology Source Type: research

Integration of Flow-Gradient Patterns Into Clinical Decision Making for Patients With Suspected Severe Aortic Stenosis and Preserved LVEF: A Systematic Review of Evidence and Meta-Analysis
Conclusions Patients with LFLG SAS have similar outcomes compared to HG SAS but worse compared to NFLG SAS. These findings support estimating stroke volume index in patients with suspected LG SAS. All analyses revealed high heterogeneity and further high-quality studies are necessary.
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - October 31, 2016 Category: Radiology Authors: Bavishi, C., Balasundaram, K., Argulian, E. Tags: Original Research Source Type: research

Postoperative Reverse Remodeling and Symptomatic Improvement in Normal-Flow Low-Gradient Aortic Stenosis After Aortic Valve Replacement Valvular Heart Disease
Conclusions— Patients with NFLG had less severe AS and LV remodeling than patients with normal-flow high-gradient. Furthermore, NFLG patients experienced less reverse remodeling but the same symptomatic benefit. Clinical Trial Registration— URL: http://www.clinicaltrials.gov. Unique identifier: NCT02316587.
Source: Circulation: Cardiovascular Imaging - December 8, 2017 Category: Radiology Authors: Carter-Storch, R., Moller, J. E., Christensen, N. L., Irmukhadenov, A., Rasmussen, L. M., Pecini, R., Ovrehus, K. A., Sondergard, E. V., Marcussen, N., Dahl, J. S. Tags: Valvular Heart Disease, Aortic Valve Replacement/Transcatheter Aortic Valve Implantation Source Type: research

Clinical and echocardiographic features of paradoxical low-flow and normal-flow severe aortic stenosis patients with concomitant mitral regurgitation
AbstractMitral regurgitation (MR) coexists in a significant proportion of patients with severe aortic stenosis (AS), and portends inferior therapeutic outcomes. In severe AS, MR is thought to contribute to a low-flow state by decreasing forward stroke volume. We investigated concomitant MR on the clinical and echocardiographic features of patients with “paradoxical” low-flow (PLF) and normal-flow (NF) severe AS. Clinical and echocardiographic profiles of 886 consecutive patients with index echocardiographic diagnosis of severe AS (AVA <  1.0 cm2) were analysed retrospectively. All patients had preserved ejectio...
Source: The International Journal of Cardiovascular Imaging - November 26, 2019 Category: Radiology Source Type: research

Effect of Left Ventricular Ejection Fraction on Postoperative Outcome in Patients With Severe Aortic Stenosis Undergoing Aortic Valve Replacement Valvular Heart Disease
Conclusions— LVEF is a powerful predictor of outcome in patients with severe aortic stenosis undergoing aortic valve replacement, independent of the presence of valve-related symptoms.
Source: Circulation: Cardiovascular Imaging - April 7, 2015 Category: Radiology Authors: Dahl, J. S., Eleid, M. F., Michelena, H. I., Scott, C. G., Suri, R. M., Schaff, H. V., Pellikka, P. A. Tags: Contractile function, Valvular heart disease, Echocardiography, CV surgery: valvular disease Source Type: research