Results 41 to 50 of about 264,517 (319)

Investigation of iterative image reconstruction in three-dimensional optoacoustic tomography

, 2012
Iterative image reconstruction algorithms for optoacoustic tomography (OAT), also known as photoacoustic tomography, have the ability to improve image quality over analytic algorithms due to their ability to incorporate accurate models of the imaging ...
Alexander A Oraevsky, Barrett H H, Elbau P, Kun Wang, Kunyansky L A, Mark A Anastasio, Pan X, Richard Su, Wang L V, Wernick M N   +9 more
core   +1 more source

PET reconstruction artifact can be minimized by using sinogram correction and filtered back-projection technique

Indian Journal of Radiology and Imaging, 2014
Filtered Back-Projection (FBP) has become an outdated image reconstruction technique in new-generation positron emission tomography (PET)/computed tomography (CT) scanners.
Ashish Kumar Jha, Nilendu C Purandare, Sneha Shah, Archi Agrawal, Ameya D Puranik, Venkatesh Rangarajan   +5 more
doaj   +1 more source

Comparing Deep Learning Frameworks for Photoacoustic Tomography Image Reconstruction

Photoacoustics, 2021
Conventional reconstruction methods for photoacoustic images are not suitable for the scenario of sparse sensing and geometrical limitation. To overcome these challenges and enhance the quality of reconstruction, several learning-based methods have ...
Ko-Tsung Hsu, Steven Guan, Parag V. Chitnis   +2 more
doaj   +1 more source

State of the art: iterative CT reconstruction techniques [PDF]

, 2015
Owing to recent advances in computing power, iterative reconstruction (IR) algorithms have become a clinically viable option in computed tomographic (CT) imaging. Substantial evidence is accumulating about the advantages of IR algorithms over established
Bastarrika, Gorka, DE CECCO, CARLO NICOLA, Geyer, Lucas L., LAGHI, ANDREA, Leipsic, Jonathon A., Meinel, Felix G., Nance, John W., Paul, Narinder S., RENGO, MARCO, Schoepf, U. Joseph   +9 more
core   +1 more source

Is Iterative Reconstruction Ready for MDCT? [PDF]

Journal of the American College of Radiology, 2009
Although the very first computed tomographic scanners used the iterative algebraic reconstruction technique, the filtered back-projection (FBP) method soon became the gold standard for computed tomographic reconstruction. Image quality has dramatically improved over the past 30 years thanks to advances in x-ray tubes, detector technologies, and overall
Jingyan, Xu, Mahadevappa, Mahesh, Benjamin M W, Tsui   +2 more
openaire   +2 more sources

Family Constraining of Iterative Algorithms

, 2013
In constraining iterative processes, the algorithmic operator of the iterative process is pre-multiplied by a constraining operator at each iterative step.
Censor, Yair, Pantelimon, Ioana, Popa, Constantin   +2 more
core   +1 more source

Approximate Message Passing in Coded Aperture Snapshot Spectral Imaging [PDF]

, 2015
We consider a compressive hyperspectral imaging reconstruction problem, where three-dimensional spatio-spectral information about a scene is sensed by a coded aperture snapshot spectral imager (CASSI).
Arce, Gonzalo, Baron, Dror, Ma, Yanting, Rueda, Hoover, Tan, Jin   +4 more
core   +1 more source

Iterative initial condition reconstruction

Physical Review D, 2017
Motivated by recent developments in perturbative calculations of the nonlinear evolution of large-scale structure, we present an iterative algorithm to reconstruct the initial conditions in a given volume starting from the dark matter distribution in real space.
Schmittfull, Marcel, Baldauf, Tobias, Zaldarriaga, Matias   +2 more
openaire   +3 more sources

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

Bandlimited Frequency-Constrained Iterative Methods

Remote Sensing
Variable aperture sampling reconstruction matrices have a history of being computationally intensive due to the need to compute a full matrix inverse. In the field of remote sensing, several spaceborne radiometers and scatterometers, which have irregular
Harrison Garrett, David G. Long
doaj   +1 more source