Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Keith Willson"'
Publikováno v:
International Journal of Geophysics, Vol 2014 (2014)
Due to the complex nature, deriving elastic properties from seismic data for the prolific Granite Wash reservoir (Pennsylvanian age) in the western Anadarko Basin Wheeler County (Texas) is quite a challenge. In this paper, we used rock physics tool t
Externí odkaz:
https://doaj.org/article/1b8976672b6a413190a376ae647b14c6
Autor:
Matthew J. Shun-Shin, Massoud Zolgharni, Claire E. Raphael, James Harrison, Niti M. Dhutia, Darrel P. Francis, Keith Willson, Graham D. Cole, Jamil Mayet
Publikováno v:
Cole, G D, Dhutia, N M, Shun-Shin, M J, Willson, K, Harrison, J, Raphael, C E, Zolgharni, M, Mayet, J & Francis, D P 2015, ' Defining the real-world reproducibility of visual grading of left ventricular function and visual estimation of left ventricular ejection fraction : impact of image quality, experience and accreditation ', INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING, vol. 31, no. 7, pp. 1303-1314 . https://doi.org/10.1007/s10554-015-0659-1
The International Journal of Cardiovascular Imaging
The International Journal of Cardiovascular Imaging
Left ventricular function can be evaluated by qualitative grading and by eyeball estimation of ejection fraction (EF). We sought to define the reproducibility of these techniques, and how they are affected by image quality, experience and accreditati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5103f6d2a4799c913a7a8ff1e2d932c
https://doi.org/10.1007/s10554-015-0659-1
https://doi.org/10.1007/s10554-015-0659-1
Autor:
Matthew J. Shun-Shin, Alexander J. Sharp, Prapa Kanagaratnam, Keith Willson, Punam A. Pabari, Andreas Kyriacou, Zachary I. Whinnett, Darrel P. Francis, S.M. Afzal Sohaib, Christopher Rajkumar, Alun D. Hughes, Jamil Mayet
Publikováno v:
Physiological Measurement. 40:04NT01
OBJECTIVE Optimization of cardiac resynchronization therapy using non-invasive haemodynamic parameters produces reliable optima when performed at high atrial paced heart rates. Here we investigate whether this is a result of increased heart rate or a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b045cecbddfc23151991741367f68af9
https://doi.org/10.1088/1361-6579/ab152c
https://doi.org/10.1088/1361-6579/ab152c
Autor:
L. De Kerchove, D. Saura Espin, Jamil Mayet, A Apor, Mona Momeni, A. Chilingaryan, Keith Willson, Christine Watremez, B. Kirilmaz, J. Dreyfus, Aristomenis Manouras, Jeremy J. Harrison, Deborah A. Francis, L. Tumasyan, David Messika-Zeitoun, M. Garcia Navarro, G. Durand-Viel, Matthew J. Shun-Shin, G. de la Morena, L. Tunyan, Alec Vahanian, Burak Altun, B Merkely, J. Hulin, P. Andrassy, M. Van Dyck, Attila Kovács, Claire E. Raphael, M. Oliva Sandoval, Ahmet Temiz, Niti M. Dhutia, M.D. Espinosa García, Eric Brochet, Graham D. Cole, L. Caballero Jimenez, J. Gonzalez Carrillo, Anikó Ilona Nagy, Ahmet Barutçu, K. Adamyan, Massoud Zolgharni, Claire Cimadevilla, Adem Bekler, Emine Gazi
Publikováno v:
European Heart Journal - Cardiovascular Imaging. 15:ii65-ii67
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::120b6a8da1e59b77fb6a93996b4ee5e6
https://doi.org/10.1093/ehjci/jeu246
https://doi.org/10.1093/ehjci/jeu246
Autor:
Arnaud Denis, Irene E. van Geldorp, Patrizio Pascale, Zachary I. Whinnett, Philippe Ritter, Michel Haïssaguerre, Sylvain Ploux, Darrel P. Francis, Maxime De Guillebon, Keith Willson, Kenneth A. Ellenbogen, Pierre Bordachar
Publikováno v:
International Journal of Cardiology
Background Reproducibility and hemodynamic efficacy of optimization of AV delay (AVD) of cardiac resynchronization therapy (CRT) using invasive LV dp/dtmax are unknown. Method and results 25 patients underwent AV delay (AVD) optimisation twice, using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04a61110a9ef8e9c5c1b0337a571e4c5
https://doi.org/10.1016/j.ijcard.2013.01.216
https://doi.org/10.1016/j.ijcard.2013.01.216
Autor:
Punam A. Pabari, Niti M. Dhutia, Resham Baruah, Xiao Yun Xu, Darrel P. Francis, Corinna Bergamini, Michela Moraldo, Anura Malaweera, Alun D. Hughes, Keith Willson, Justin E. Davies, Charlotte Manisty
Publikováno v:
International Journal of Cardiology
Background Effective regurgitant orifice area (EROA) in mitral regurgitation (MR) is difficult to quantify. Clinically it is measured using the proximal isovelocity surface area (PISA) method, which is intrinsically not automatable, because it requir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::538e29a303a7f1a0ed85e2bce916dd26
https://doi.org/10.1016/j.ijcard.2011.11.104
https://doi.org/10.1016/j.ijcard.2011.11.104
Autor:
Andreas Kyriacou, Zachary I. Whinnett, Beth Unsworth, Prapa Kanagaratnam, Darrel P. Francis, Resham Baruah, Jamil Mayet, Alun D. Hughes, Nicholas S. Peters, Matthew E. Li Kam Wa, Punam A. Pabari, Keith Willson
Publikováno v:
International Journal of Cardiology
Background In atrial fibrillation (AF), VV optimization of biventricular pacemakers can be examined in isolation. We used this approach to evaluate internal validity of three VV optimization methods by three criteria. Methods and results Twenty patie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::856e0dfed57d2b1bbfe5632869049759
http://europepmc.org/articles/PMC3744806
http://europepmc.org/articles/PMC3744806
Autor:
Alun D. Hughes, Darrel P. Francis, Iqbal S. Malik, Jazmin Aguado-Sierra, Jamil Mayet, Nearchos Hadjiloizou, Kim H. Parker, Jordi Alastruey, Zachary I. Whinnett, Charlotte Manisty, Rodney A. Foale, Justin E. Davies, Keith Willson
Publikováno v:
Hypertension. 60:778-785
Wave reflection is thought to be important in the augmentation of blood pressure. However, identification of distal reflections sites remains unclear. One possible explanation for this is that wave reflection is predominately determined by an amalgam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3441438ed98103c4397afa4aac0e393c
https://doi.org/10.1161/hypertensionaha.111.180604
https://doi.org/10.1161/hypertensionaha.111.180604
Autor:
Darrel P. Francis, Punam A. Pabari, Andreas Kyriacou, Berthold Stegemann, Jamil Mayet, Alun D. Hughes, Prapa Kanagaratnam, Zachary I. Whinnett, Keith Willson, Resham Baruah, Satpal Arri
Publikováno v:
Pacing and Clinical Electrophysiology. 35:948-960
Background: Hemodynamic optimization of cardiac resynchronization therapy (CRT) can be achieved reproducibly and—with bulky, nonimplantable equipment—noninvasively. We explored whether a simple photoplethysmogram signal might be used instead. Met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25fafbf3054d82344a7a5ffbb9d0e9d0
https://doi.org/10.1111/j.1540-8159.2012.03435.x
https://doi.org/10.1111/j.1540-8159.2012.03435.x
Autor:
Alun D. Hughes, Daniel Rueckert, Darrel P. Francis, Kim H. Parker, Graham D. Cole, Keith Willson, Niti M. Dhutia
Publikováno v:
International Journal of Cardiology
Background Transmitral pulse wave (PW) Doppler and annular tissue Doppler velocity measurements provide valuable diagnostic and prognostic information. However, they depend on an echocardiographer manually selecting positions to make the measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4a2b77b0b639f5b94ee1e5cad0e8334
http://europepmc.org/articles/PMC3314963
http://europepmc.org/articles/PMC3314963