Results 131 to 140 of about 887,904 (256)

Wavefront reconstruction and mirror surface optimization for adaptive optics [PDF]

, 2014
The problem of wavefront reconstruction is important in high precision optical systems, such as astronomical telescopes, where it is used to estimate the distortion of the collected light caused by the atmosphere and corrected by adaptive optics.
Axtell, Travis W.
core   +1 more source

Terminal S Wave Pattern in Lead V3 as a Simple Marker for Ventricular Tachycardia Risk Stratification in Patients With Repaired Tetralogy of Fallot

Journal of Cardiovascular Electrophysiology, EarlyView.
ABSTRACT Introduction Patients with repaired tetralogy of Fallot (rTOF) remain at risk of ventricular tachycardia (VT). This risk is most commonly related to slow conduction within the septal isthmus, which is defined as the region between the ventricular septal defect (VSD) patch and adjacent valvular annuli.
Yuki Matsuoka, Miyako Igarashi, Naoto Kawamatsu, Yuto Iioka, Yoshihiro Harano, Yuki Komatsu, Tomoko Machino‐Ohtsuka, Hiro Yamasaki, Tomoko Ishizu   +8 more
wiley   +1 more source

Anatomical Determinants of the Left Atrial Electrograms: Wall Thickness and Myocardial Fat Infiltration

Journal of Cardiovascular Electrophysiology, EarlyView.
ABSTRACT Introduction Electrogram peak‐to‐peak voltage depends on atrial wall structure and mapping configuration. We evaluated the relationship between computed tomography–derived atrial wall thickness, intramyocardial fat, myocardial muscle thickness, and electrogram voltage obtained with omnipolar, bipolar, and unipolar mapping.
Cecilia Granata, Nicola Pierucci, Lorenzo Mazzocchi, Raimondo Pittorru, Roger Borras, Jean‐Baptiste Guichard, Mariona Regany‐Closa, Jana Reventos‐Presmanes, Laia Llorca, Rosa Maria Figueras i Ventura, Jose Maria Tolosana, Adelina Doltra, Susana Prat, Blanca Domenech‐Ximenos, Rosario Jesus Perea‐Palazon, Till Althoff, Lluís Mont, Eduard Guasch, Marta Sitges, Ana Garcia‐Alvarez, Ivo Roca‐Luque, Andreu Porta‐Sanchez   +21 more
wiley   +1 more source

Incoherent Digital Holography Empowered by Wavefront and Information Engineering: A Review

Advanced Photonics Research
Incoherent digital holography (IDH) is a technique used to create holograms with a spatially incoherent light source. This technique has unlocked the potential of holography and expanded its applications to 3D fluorescence microscopy and 3D imaging under
Teruyoshi Nobukawa
doaj   +1 more source

Multichannel SAR imaging using wavefront reconstruction [PDF]

, 2004
6 pagesThe combination of phased arrays with Synthetic Aperture Radar (SAR), ie. multichannel SAR offers many benefits such as improved ambiguity suppression for Moving Target Indication (MTI) and imaging large swaths [1]-[2], improved Signal-Noise-Ratio
Rosenberg, L., Gray, D.
core  

Hyperspectral tomographic diffractive microscopy: Development and applications

Journal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori, Carlos Alberto Chacón Ávila, Matthieu Debailleul, Nicolas Verrier, Olivier Haeberlé   +4 more
wiley   +1 more source

Quantitative phase imaging based on holography: trends and new perspectives

Light: Science & Applications
In 1948, Dennis Gabor proposed the concept of holography, providing a pioneering solution to a quantitative description of the optical wavefront.
Zhengzhong Huang, Liangcai Cao
doaj   +1 more source

Validation of Intramural Wavefront Reconstruction and Estimation of 3D Conduction Velocity. [PDF]

Comput Cardiol (2010), 2019
Good WW, Gillette KK, Bergquist JA, Zenger B, Tate J, Rupp LC, Anderson D, Plank G, MacLeod RS.   +8 more
europepmc   +1 more source

Beyond single cells: Ten years of commercial lattice light‐sheet microscopy

Journal of Microscopy, EarlyView.
Abstract Lattice light‐sheet microscopy (LLSM) enables gentle, rapid, volumetric fluorescence imaging of living biological systems. The technique employs Bessel beam interference to produce a light‐sheet which retains its thickness over a relatively large field‐of‐view compared to other light‐sheets.
Helena L. E. Coker, David S. Corcoran
wiley   +1 more source

Panoramic voltage‐sensitive optical mapping of contracting hearts using cooperative multiview motion tracking with 12 cameras

The Journal of Physiology, EarlyView.
Abstact figure legend A panoramic 3D optical mapping system was developed, enabling imaging of action potential waves across the entire strongly deforming ventricular surface of beating isolated hearts. The system comprises 12 high‐speed cameras and a soccerball‐shaped imaging chamber with 48 light‐emitting diodes (LEDs).
Shrey Chowdhary, Jan Lebert, Shai Dickman, Mason Manetta, Charles Gordon, Jan Christoph   +5 more
wiley   +1 more source