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Brain color-coded diffusion imaging: Utility of ACPC reorientation of gradients in healthy subjects and patients.
Comput Methods Programs Biomed
December 2024
Université Clermont Auvergne, CNRS, CHU Clermont-Ferrand, Clermont Auvergne INP, Institut Pascal, F-63000 Clermont-Ferrand, France; Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut Pascal, F-63000 Clermont-Ferrand, France. Electronic address:
Background And Objective: The common structural interpretation of diffusion color-encoded (DCE) maps assumes that the brain is aligned with the gradients of the MRI machine. This is seldom achieved in the field, leading to incorrect red (R), green (G) and blue (B) DCE values for the expected orientation of fiber bundles. We studied the virtual reorientation of gradients according to the anterior commissure - posterior commissure (ACPC) system on the RGB derivatives.
View Article and Find Full Text PDFTranscatheter Aortic Valve Implantation Using the Evolut FX+ Platform With Optimal Diamond-Coronary Alignment.
JACC Case Rep
September 2024
Department of Cardiology, Houston Methodist DeBakey Heart and Vascular Center, Houston, Texas, USA.
We present one of the inaugural transcatheter aortic valve implantation procedures using the latest Medtronic platform, Evolut FX+. Successful coronary angiography was achieved within 28 seconds and 1 minute 49 seconds for the left and right coronary arteries, respectively. Postoperative cardiac computed tomography scan demonstrated optimal commissural and diamond-coronary alignment.
View Article and Find Full Text PDFImpact of commissural alignment on the hemodynamic performance of supra-annular self-expandable transcatheter aortic valves.
Catheter Cardiovasc Interv
November 2024
Cardiology Department, University Clinic Hospital, Valladolid, Spain.
Article Synopsis
- The study aimed to assess the hemodynamic effects of commissural alignment (CA) in patients receiving self-expandable transcatheter aortic valves (TAVR) using two different devices: Evolut Pro (EP) and Acurate neo2 (AN2).
- Analyzing 557 patients, the results showed that CA was linked to a significant reduction in the rate of commissural misalignment (CMA) compared to those without CA, leading to lower transvalvular gradients and less aortic regurgitation after one year.
- Although patients with moderate/severe CMA experienced worsened aortic gradients and regurgitation rates, overall structural deterioration criteria were not met at
Evaluation and management of coronary artery disease in transcatheter aortic valve implantation candidates with severe aortic stenosis and coronary artery disease: technology and techniques.
Expert Rev Med Devices
October 2024
Department of Medicine and Surgery, Università degli Studi di Enna "Kore", Enna, Italy.
Article Synopsis
- Patients with severe aortic stenosis often have coronary artery disease (CAD), and how to manage this condition during transcatheter aortic valve implantation (TAVI) is still debated.
- This review discusses the timing of coronary revascularization strategies—whether to perform percutaneous coronary intervention (PCI) before, during, or after TAVI—and the expected increase in PCI procedures as more low-risk patients are referred for TAVI.
- Expert opinions suggest that there may be a shift towards performing PCI after TAVI, supported by studies on TAVI's safety in patients with untreated CAD and advancements in implantation techniques that enhance access to coronary arteries post-procedure.
Coronary Access and PCI after Transcatheter Aortic Valve Replacement With Different Self-Expanding Platforms in Failed Surgical Valves.
Can J Cardiol
November 2024
Jagiellonian University Medical College, Krakow, Poland.
Article Synopsis
- Coronary access (CA) and percutaneous coronary intervention (PCI) can be more difficult after valve-in-valve transcatheter aortic valve replacement (ViV-TAVR), especially with certain valve designs.* -
- A study found that the ACURATE neo2 valve led to significantly better success rates for both CA (96.7%) and PCI (98.3%) compared to the Evolut PRO+ valve (75% and 85%, respectively).* -
- The design differences between the valves affected procedural approaches, with ACURATE neo2 allowing for easier access due to a greater valve-to-anatomy distance.*
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