Results 51 to 60 of about 18,154 (228)

Online Spatiotemporally Constrained Reconstruction for Real‐Time Interactive MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a low‐latency dynamic MRI reconstruction that provides better spatial and temporal fidelity than contemporary online reconstruction, for localization. Methods We utilize online spatiotemporally constrained reconstruction (STCR) using a computationally efficient augmented Lagrangian solution and a limited number of iterations
Duc H. Le, Prakash Kumar, Ecrin Yagiz, Ye Tian, Krishna S. Nayak   +4 more
wiley   +1 more source

Algebraic and spectral properties of H-Toeplitz operators on the Bergman space

AIMS Mathematics
In this paper, we discuss the zero product problem of two H-Toeplitz operators and the commuting problem of H-Toeplitz and Hankel operators on the Bergman space.
Jie Zhang
doaj   +1 more source

Toeplitz Operators, Pseudo-Homogeneous Symbols, and Moment Maps on the Complex Projective Space

Journal of Function Spaces, 2017
Following previous works for the unit ball due to Nikolai Vasilevski, we define quasi-radial pseudo-homogeneous symbols on the projective space and obtain the corresponding commutativity results for Toeplitz operators. A geometric interpretation of these
Miguel Antonio Morales-Ramos, Raul Quiroga-Barranco, Armando Sanchez-Nungaray   +2 more
doaj   +1 more source

Dual Toeplitz Operators on the Orthogonal Complement of the Fock–Sobolev Space

Journal of Mathematics, 2023
In this paper, we consider the dual Toeplitz operators on the orthogonal complement of the Fock–Sobolev space and characterize their boundedness and compactness.
Li He, Biqian Wu
doaj   +1 more source

Chaos for the Dynamics of Toeplitz Operators

Mathematics, 2022
Chaotic properties in the dynamics of Toeplitz operators on the Hardy–Hilbert space H2(D) are studied. Based on previous results of Shkarin and Baranov and Lishanskii, a characterization of different versions of chaos formulated in terms of the ...
Salud Bartoll, Ronald Richard Jiménez-Munguía, Rubén Alejandro Martínez-Avendaño, Alfred Peris   +3 more
doaj   +1 more source

DREAMER: Rapid and Simultaneous Multiple Contrast Magnetic Resonance Imaging of Solid and Soft Tissue

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Pediatric craniofacial imaging may involve examination of both the skull and brain tissues via CT and MRI, respectively. DREAMER (Dual Repetition and Echo Acquisition with Multi‐contrast Encoding and Reconstruction) simultaneously acquires solid‐ and soft‐tissue images, potentially providing a rapid, high‐resolution, and radiation‐free
Brian‐Tinh Duc Vu, Nada Kamona, Felix W. Wehrli, Rajiv S. Deshpande, Hee Kwon Song, Allison Hu, Emily Baccaglini, Scott P. Bartlett, Chamith S. Rajapakse   +8 more
wiley   +1 more source

Essential Spectra of Quasi-parabolic Composition Operators on Hardy Spaces of the Poly-disc

, 2012
This work is a generalization of the results in [Gul] to bi-disc case. As in [Gul], quasi-parabolic composition operators on the Hilbert-Hardy space of the bi-disc are written as a linear combination of Toeplitz operators and Fourier multipliers.
Gül, Uğur
core   +1 more source

Coil Sketching for Fast and Efficient 4D Lung MRI Reconstruction

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop and evaluate a memory‐efficient and accelerated reconstruction framework for respiratory‐resolved 4D lung MRI using coil sketching and Toeplitz approximation, enabling high‐quality motion‐compensated low‐rank (MoCo‐LR) reconstructions on clinically accessible GPU hardware.
Joseph W. Plummer, Pierre Daudé, Anastasia Tsakirellis, Jordan Taylor, Joel Moss, Rajiv Ramasawmy, Ahsan Javed, Adrienne E. Campbell‐Washburn   +7 more
wiley   +1 more source

Cowen sets for Toeplitz operators [PDF]

, 2023
Hyoung Joon Kim, Jae ui Park
openalex   +1 more source

Pulmonary Transit Time Can Be Accurately Quantified From Non‐Arterial Input Function Series in First‐Pass Cardiac Perfusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Previous studies suggested that arterial‐input‐function (AIF) images are necessary to avoid signal saturation for pulmonary transit time (PTT) measurements. This study challenges that notion by investigating whether PTT can be accurately measured using blood pool signals from myocardial enhancement (non‐AIF) images during resting first‐
Mingyue Zhao, Lexiaozi Fan, Kyungpyo Hong, Benjamin H. Freed, Jacqueline Urban, Kelvin Chow, Li‐Yueh Hsu, Daniel C. Lee, Daniel Kim   +8 more
wiley   +1 more source