Articles with "pulse sequences" as a keyword



Chirp pulse sequences for broadband π rotation.

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Published in 2021 at "Journal of magnetic resonance"

DOI: 10.1016/j.jmr.2021.107002

Abstract: In this paper, we present various chirp pulse sequences for implementing a broadband π rotation, which can serve as an ideal refocusing pulse element in a spin echo pulse sequence. These sequences are composed of… read more here.

Keywords: broadband rotation; chirp pulse; sequences broadband; pulse sequences ... See more keywords

Technical Update on MR Neurography.

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Published in 2022 at "Seminars in musculoskeletal radiology"

DOI: 10.1055/s-0042-1742753

Abstract: Imaging evaluation of peripheral nerves (PNs) is challenging. Magnetic resonance imaging (MRI) and ultrasonography are the modalities of choice in the imaging assessment of PNs. Both conventional MRI pulse sequences and advanced techniques have important… read more here.

Keywords: radiology; update neurography; neurography; pulse sequences ... See more keywords

High-fidelity quantum gates via optimizing short pulse sequences in three-level systems

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Published in 2024 at "New Journal of Physics"

DOI: 10.1088/1367-2630/ad1a2a

Abstract: We propose a robust and high-fidelity scheme for realizing universal quantum gates by optimizing short pulse sequences in a three-level system. To alleviate the sensitivity to the errors, we recombine all elements of error matrices… read more here.

Keywords: short pulse; high fidelity; quantum gates; pulse sequences ... See more keywords

Short two-qubit pulse sequences for exchange-only spin qubits in two-dimensional layouts

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Published in 2025 at "Physical Review A"

DOI: 10.1103/physreva.111.052616

Abstract: Exchange-only (EO) spin qubits in quantum dots offer an expansive design landscape for engineering scalable device layouts. The study of two-EO-qubit operations, which involve six electrons in six quantum dots, has so far been limited… read more here.

Keywords: spin qubits; two qubit; pulse sequences; exchange spin ... See more keywords

Model-Based Representation and Deinterleaving of Mixed Radar Pulse Sequences With Neural Machine Translation Network

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Published in 2022 at "IEEE Transactions on Aerospace and Electronic Systems"

DOI: 10.1109/taes.2021.3122411

Abstract: Deinterleaving mixtures of radar pulse sequences is the first and the most vital step for modern electronic reconnaissance systems to intercept and analyze the intentions of noncooperative radars. Currently, these systems are facing great challenges… read more here.

Keywords: machine translation; neural machine; sequence; radar pulse ... See more keywords

Deinterleaving Mixed Radar Pulse Sequences in Complex Electromagnetic Environments

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Published in 2025 at "IEEE Transactions on Aerospace and Electronic Systems"

DOI: 10.1109/taes.2025.3593910

Abstract: With the increasing number of emitters and interference, coupled with the development of low probability of intercept techniques, the complexity of operational systems, and the integrated application of antijamming technologies, the pulse stream intercepted by… read more here.

Keywords: complex electromagnetic; mixed radar; radar pulse; pulse sequences ... See more keywords

Parameter Estimation of Hybrid LFM and MPSK Pulse Sequences Based on Sub-Nyquist Sampling

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Published in 2024 at "IEEE Transactions on Instrumentation and Measurement"

DOI: 10.1109/tim.2024.3450068

Abstract: To accurately perceive pulse sequences containing linear frequency modulation (LFM) and M-ary phase shift keying (MPSK) signals, this article introduces a parameter measurement framework based on the finite rate of innovation (FRI) sampling theory. By… read more here.

Keywords: parameter; parameter estimation; estimation; pulse sequences ... See more keywords

Improving SABRE hyperpolarization with highly nonintuitive pulse sequences: Moving beyond avoided crossings to describe dynamics

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Published in 2022 at "Science Advances"

DOI: 10.1126/sciadv.abl3708

Abstract: Signal amplification by reversible exchange (SABRE) creates “hyperpolarization” (large spin magnetization) using a transition metal catalyst and parahydrogen, addressing the sensitivity limitations of magnetic resonance. SABRE and its heteronuclear variant X-SABRE are simple, fast, and… read more here.

Keywords: improving sabre; hyperpolarization; avoided crossings; sabre ... See more keywords
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Optimization of Parameters of RF Pulse Sequences for MRI Investigations in the Presence of Magnetic Nanoparticles

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Published in 2020 at "Technical Physics"

DOI: 10.1134/s106378422009008x

Abstract: We consider the effect of various radio frequency (rf) pulse sequences on the contrast of magnetic resonance (MR) images. We have developed a program for simulating magnetic resonance tomograms and for determining optimal values of… read more here.

Keywords: contrast agents; parameters pulse; sequences mri; optimization parameters ... See more keywords

Measurement and multiplexing of ultra-low duty cycle Nyquist pulse sequences.

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Published in 2023 at "Applied optics"

DOI: 10.1364/ao.486964

Abstract: In this paper, we propose a novel, to the best of our knowledge, method to our knowledge for generating and accurately measuring Nyquist pulse sequences with an ultra-low duty cycle of only 0.037, which breaks… read more here.

Keywords: low duty; ultra low; duty cycle; pulse sequences ... See more keywords
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Use of Multiplied, Added, Subtracted and/or FiTted Inversion Recovery (MASTIR) pulse sequences.

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Published in 2020 at "Quantitative imaging in medicine and surgery"

DOI: 10.21037/qims-20-568

Abstract: The group of Multiplied, Added, Subtracted and/or fiTted Inversion Recovery (MASTIR) pulse sequences in which usually two or more inversion recovery (IR) images of different types are combined is described, and uses for this type… read more here.

Keywords: inversion; contrast; tissue; subtraction ... See more keywords