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TCT-669 Very Low Intravenous Contrast Dose (20 cc) Computed Tomographic Angiography Protocol for Pre-Procedural Assessment of the Aortic Annulus Prior to Transcatheter Aortic Valve Replacement: Validation by 3-Dimensional Transesophageal Echocardiography

Omar K. Khalique, Todd Pulerwitz, Tamim M. Nazif, Martin Leon, Isaac George, Hemal Gada, Torsten P. Vahl
2014 Journal of the American College of Cardiology  
TCT-672 Relationship between atheroma of the thoracic aorta and risk of stroke in patients undergoing transcatheter aortic valve implantation University of Denver, Denver, CO Background: Transcatheter  ...  The segmented aortic root volume, valve cusp landmarks and optimal viewing angles were automatically determined from these scans using customized image processing software.  ... 
doi:10.1016/j.jacc.2014.07.739 fatcat:akfljmmx7veq5hwuieqylntfge

Three-dimensional imaging in the context of minimally invasive and transcatheter cardiovascular interventions using multi-detector computed tomography: from pre-operative planning to intra-operative guidance

P. Schoenhagen, U. Numburi, S. S. Halliburton, P. Aulbach, M. von Roden, M. Y. Desai, L. L. Rodriguez, S. R. Kapadia, E. M. Tuzcu, B. W. Lytle
2010 European Heart Journal  
The rapid expansion of less invasive surgical and transcatheter cardiovascular procedures for a wide range of cardiovascular conditions, including coronary, valvular, structural cardiac, and aortic disease  ...  This is in particular true, because data showing improved outcome or even non-inferiority for most of the emerging transcatheter procedures are still lacking. ---  ...  Transcatheter aortic valve implantation shows promising early results as a treatment option for patients with severe aortic stenosis who are considered high-risk candidates for conventional aortic valve  ... 
doi:10.1093/eurheartj/ehq302 pmid:20797981 fatcat:qg2g7llxbfaapgrp7chprk2lg4

Expanding indications for transcatheter aortic valve replacement

Gabriel Maluenda, Danny Dvir
2014 Expert Review of Cardiovascular Therapy  
to evaluate candidates for transcatheter aortic valve replacement Dr.  ...  Ensuring that the selected devise can be implanted safely and successfully based on the aortic valve characteristics and the anatomical relationships between the aortic valve, the aortic root, the left  ... 
doi:10.1586/14779072.2014.916615 pmid:24809383 fatcat:zaaozknk3fgbxp5metvhivj544

The role of echocardiography and CT angiography in transcatheter aortic valve implantation patients

Emmanouil Chourdakis, Ioanna Koniari, Nicholas G Kounis, Dimitrios Velissaris, Nikolaos Koutsogiannis, Grigorios Tsigkas, Karl Eugen Hauptmann, Bruno Sontag, George Hahalis
2018 Journal of Geriatric Cardiology  
The transcatheter aortic valve implantation (TAVI) consist an alternative treatment in patients with severe aortic stenosis.  ...  CT angiography is much more accurate regarding the total definition of aortic annulus diameter and circumferential area.  ...  The CT data are automatically segmented to identify the aortic root, coronary ostia, the aortic valve, the left ventricle and the valve plane running through the bottom of the three cusps. http://www.jgc301  ... 
doi:10.11909/j.issn.1671-5411.2018.01.006 pmid:29434630 pmcid:PMC5803542 fatcat:pa6qrdrurjbcvb3jvywc4pn2eq

Computer Vision Techniques for Transcatheter Intervention

Feng Zhao, Xianghua Xie, Matthew Roach
2015 IEEE Journal of Translational Engineering in Health and Medicine  
For example, transcatheter aortic valve implantation is an alternative to aortic valve replacement for the treatment of severe aortic stenosis, and transcatheter atrial fibrillation ablation is widely  ...  We aim to give a comprehensive overview for researchers in the area of computer vision on the subject of transcatheter intervention.  ...  There are two main approaches for implanting a valve in the aortic root: transfemoral and transapical approaches.  ... 
doi:10.1109/jtehm.2015.2446988 pmid:27170893 pmcid:PMC4848047 fatcat:kgkprfayx5arxbyacbubjrbbhy

Automatic Aorta Segmentation and Valve Landmark Detection in C-Arm CT for Transcatheter Aortic Valve Implantation

Yefeng Zheng, M. John, Rui Liao, A. Nottling, J. Boese, J. Kempfert, T. Walther, G. Brockmann, D. Comaniciu
2012 IEEE Transactions on Medical Imaging  
Automatic aorta segmentation and aortic valve landmark detection in a C-arm CT volume facilitate the seamless integration of C-arm CT into the TAVI workflow and improve the patient care.  ...  Index Terms-Aorta segmentation, aortic valve landmark detection, C-arm computed tomography (CT), transcatheter aortic valve implantation, transcatheter aortic valve replacement.  ...  Fig. 3 . 3 Applications of C-arm CT to transcatheter aortic valve implantation. (a) A C-arm CT volume. (b) Automatically segmented aorta together with the detected valve landmarks.  ... 
doi:10.1109/tmi.2012.2216541 pmid:22955891 fatcat:yhggoh4ujjderiyhb3qq6ermai

Structural and congenital heart disease interventions: the role of three-dimensional printing

L. M. Meier, M. Meineri, J. Qua Hiansen, E. M. Horlick
2017 Netherlands Heart Journal  
We also examine the expanded applications of 3D printing in the catheter-based treatment of adult patients with structural and congenital heart disease while highlighting the current limitations of this  ...  In this review we discuss the different steps of the 3D printing process, which include image acquisition, segmentation, printing methods and materials.  ...  of permanent pacemaker implantation [40] -3D printing of aortic roots to design tailored transcatheter stented aortic valves [41, 42] -Patient-specific 3D models to assess the physical interplay of  ... 
doi:10.1007/s12471-016-0942-3 pmid:28083857 pmcid:PMC5260628 fatcat:rr6y63ehhvehpp3pkrayioaa2a

Multidetector Computed Tomography Angiography (MDCT) in the Pre-Procedural Assessment of Patients Undergoing Transcatheter Aortic Valve Replacement

Cihan Duran, University of Texas Medical Branch (UTMB) at Galveston – Department of Radiology, Irfan Masood, Alper Duran, Luba Frank, Arsalan Saleem, Raja Muthupillai, Benjamin Y.C. Cheong, University of Texas Medical Branch (UTMB) at Galveston – Department of Radiology, University of Texas Medical Branch (UTMB) at Galveston – Department of Radiology, University of Texas Medical Branch (UTMB) at Galveston – Department of Radiology, University of Texas Medical Branch (UTMB) at Galveston – Department of Radiology (+2 others)
2019 Eurasian Journal of Medicine  
Transcatheter aortic valve replacement (TAVR) initially emerged as an alternative option to surgical aortic valve replacement (SAVR) for patients with severe aortic stenosis who were considered either  ...  used for transcatheter heart valve delivery.  ...  In patients who underwent TAVR, accurate sizing of the aortic annulus is of paramount importance for selecting the optimal transcatheter heart valve (THV) and for minimizing intra-procedural and post-procedural  ... 
doi:10.5152/eurasianjmed.2019.18329 pmid:32158322 pmcid:PMC7051224 fatcat:v76nhhyoqzd7llzp54vohnzvza

Diagnostic value of iterative reconstruction algorithm in low kV CT angiography (CTA) with low contrast medium volume for transcatheter aortic valve implantation (TAVI) planning: image quality and radiation dose exposure

Cammillo R Talei Franzesi, Davide Ippolito, Luca Riva, Davide Fior, Cecilia Cangiotti, Sandro Sironi
2018 British Journal of Radiology  
To evaluate image quality and radiation dose exposure of low-kV (100 kV) and low contrast medium (CM) volume CT angiography (CTA) in patients candidate to Transcatheter Aortic Valve Implantation (TAVI)  ...  Vascular enhancement (HU) was then assessed in each patient by manually drawing multiple ROIs in lumen of 7 segments of the whole aorta.  ...  volume (50 ml), in CT angiography (CTA) study in patients candidate to transcatheter aortic valve implantation, using the iterative reconstruction algorithms technique, in comparison with standard CT  ... 
doi:10.1259/bjr.20170802 pmid:30074831 pmcid:PMC6319841 fatcat:taz7juchknc3tlknqnxa6cpywy

Computed Tomography Imaging in the Context of Transcatheter Aortic Valve Implantation (TAVI)/Transcatheter Aortic Valve Replacement (TAVR)

Philipp Blanke, Jonathan R. Weir-McCall, Stephan Achenbach, Victoria Delgado, Jörg Hausleiter, Hasan Jilaihawi, Mohamed Marwan, Bjarne L. Nørgaard, Niccolo Piazza, Paul Schoenhagen, Jonathon A. Leipsic
2019 JACC Cardiovascular Imaging  
transcatheter aortic valve implantation (TAVI)/transcatheter aortic valve replacement (TAVR) by the Society of Cardiovascular Computed Tomography (SCCT) in 2012 (1), there has been tremendous advancement  ...  ; SOV ¼ sinus of valsalva; STJ ¼ sinotubular junction; TAVI ¼ transcatheter aortic valve implantation; TAVR ¼ transcatheter aortic valve replacement. day mortality of up to 40.9% (48,49).  ... 
doi:10.1016/j.jcmg.2018.12.003 pmid:30621986 fatcat:kdmgtsmngbd3je4sycixmmgv44

3D printing applications for percutaneous structural interventions in congenital heart disease

Hannah Tredway, Nikhil Pasumarti, Matthew A. Crystal, Kanwal M. Farooqi
2020 Mini-invasive Surgery  
This paper reviews the process by which patient-specific 3D cardiac models are produced, as well as numerous applications of these models for use in percutaneous interventions in CHD.  ...  The past several decades have seen remarkable advancements in percutaneous interventions for treatment of congenital heart disease (CHD).  ...  [15] studied the use of 3D models to replicate patient-specific aortic root anatomy prior to transcatheter aortic valve replacement, and they found that the models provide insight into how the patient  ... 
doi:10.20517/2574-1225.2020.77 fatcat:5aa5z4jhbvdvjahcsixulyaf3q

COMPARISON OF PREOPERATIVE NONINVASIVE AND INTRAOPERATIVE MEASUREMENTS OF AORTIC ANNULUS
English

Manish Hinduja, Vivek Wadhawa, Sandip Singh Rana, Harkant Singh, Parmindrer Singh, Manphool Singhal, Chirag Doshi, Amber Malhotra
2016 Journal of Evidence Based Medicine and Healthcare  
BACKGROUND Precise preoperative assessment of aortic annulus diameter is essential for sizing of aortic valve especially in patients planned for transcatheter aortic valve replacement.  ...  This study was undertaken to compare the measurement of aortic annulus intraoperatively with preoperative noninvasive methods in patients undergoing aortic valve replacement.  ...  of the aortic annulus and root in patients with aortic valve calcification and stenosis.  ... 
doi:10.18410/jebmh/2016/919 fatcat:qrck4jl4href3aaru2yh2qit6e

Transapical Minimally Invasive Aortic Valve Implantation: Multicenter Experience

T. Walther, P. Simon, T. Dewey, G. Wimmer-Greinecker, V. Falk, M. T. Kasimir, M. Doss, M. A. Borger, G. Schuler, D. Glogar, W. Fehske, E. Wolner (+2 others)
2007 Circulation  
Implantation (23-mm valves in 19 and 26-mm valves in 40 patients) was performed on the beating heart during brief periods of rapid ventricular pacing.  ...  Background-To evaluate initial multicenter results with minimally invasive transapical aortic valve implantation (TAP-AVI) for high risk patients with aortic stenosis.  ...  Acknowledgments We are very grateful to Mark Dehdashtian, Teodoro Jimenez, and Sal Marquez (all Edwards Lifesciences Irvine, Calif) for their continuous technical support when performing this study.  ... 
doi:10.1161/circulationaha.106.677237 pmid:17846311 fatcat:mvkxxskgsjgldbugyfu5h6hjli

Imaging in Transcatheter Aortic Valve Replacement (TAVR): role of the radiologist

Diana E. Litmanovich, Eduard Ghersin, David A. Burke, Jeffrey Popma, Maryam Shahrzad, Alexander A. Bankier
2014 Insights into Imaging  
Transcatheter aortic valve replacement (TAVR) is a novel technique developed in the last decade to treat severe aortic stenosis in patients who are non-surgical candidates because of multiple comorbidities  ...  Teaching Points • TAVR is a new technique to treat severe aortic stenosis in high-risk and nonsurgical candidates. • MDCT assessment of the aortic annulus is important for appropriate patient and device  ...  For the patient population considered unsuitable or at high-risk for sAVR because of underlying comorbidities, the development of transcatheter aortic valve replacement (TAVR) has resulted in an alternative  ... 
doi:10.1007/s13244-013-0301-5 pmid:24443171 pmcid:PMC3948900 fatcat:c2gf7j44ererxcbuwkads2sw3u

2017 ACC Expert Consensus Decision Pathway for Transcatheter Aortic Valve Replacement in the Management of Adults With Aortic Stenosis

Catherine M. Otto, Dharam J. Kumbhani, Karen P. Alexander, John H. Calhoon, Milind Y. Desai, Sanjay Kaul, James C. Lee, Carlos E. Ruiz, Christina M. Vassileva
2017 Journal of the American College of Cardiology  
Three-dimensional imaging of the aortic valve and aortic root with computed tomography: new standards in an era of transcatheter valve repair/implantation. Eur Heart J. 2009;30:2079-86. 41.  ...  Transcatheter aortic-valve implantation for aortic stenosis in patients who cannot undergo surgery. N Engl J Med. 2010;363: 1597-607. 32.  ...  or c) the person or a member of the person's household, has a reasonable potential for financial, professional or other personal gain or loss as a result of the issues/content addressed in the document  ... 
doi:10.1016/j.jacc.2016.12.006 pmid:28063810 fatcat:fpu65y5o2zc3nfn4br7folopfu
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