Results 161 to 170 of about 34,114 (283)

Phase‐Pole‐Free Images and Smooth Coil Sensitivity Maps by Regularized Nonlinear Inversion

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Phase singularities are a common problem in image reconstruction with auto‐calibrated sensitivities due to an inherent ambiguity of the estimation problem. The purpose of this work is to develop a method for detecting and correcting phase poles in non‐linear inverse (NLINV) reconstruction of MR images and coil sensitivity maps ...
Moritz Blumenthal, Martin Uecker
wiley   +1 more source

Covert Communications via Full-Duplex User Relaying. [PDF]

Sensors (Basel)
Ryu JY, Lee JH.
europepmc   +1 more source

Reducing Inhomogeneous MT (ihMT) Acquisition Time Using Frequency Alternation at Low Duty Cycle for Single Offset (FALSO) MT Preparations

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate Frequency Alternation at Low duty cycle for Single Offset (FALSO) as a novel Magnetization Transfer (MT) preparation scheme to increase speed and/or spatial resolution of inhomogeneous MT (ihMT) MRI by reducing the number of volumes required.
Gopal Varma, Aaron K. Grant, Lucas Soustelle, Olivier M. Girard, Guillaume Duhamel, David C. Alsop   +5 more
wiley   +1 more source

Airborne-Platform-Assisted Transmission and Control Separation for Multiple Access in Integrated Satellite-Terrestrial Networks. [PDF]

Sensors (Basel)
Huang C, Ma X, Xin X, Han W, Dong Y.
europepmc   +1 more source

Acceleration of Phase‐Modulated Ultrashort Echo Time Sequence for Fast T2 and Adiabatic T1ρ Mapping of the Knee Joints

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop and validate an accelerated phase‐modulated ultrashort echo time (PM‐UTE) sequence for volumetric T2 and adiabatic T1ρ (AdiabT1ρ) mapping of both short‐ and long‐T2 tissues in the knee joint. Methods The proposed method estimates and removes the T1‐dependent component from a single reference acquisition, eliminating repeated
Jiyo S. Athertya, Dina Moazamian, Niloofar Shojaeiadib, Jiaji Wang, Xin Shen, Saeed Jerban, Jiang Du, Yajun Ma   +7 more
wiley   +1 more source

SIC based RL for massive MIMO NOMA signal detection for different modulation schemes under diverse channel conditions. [PDF]

Sci Rep
Kumar A, Nanthaamornphong A, Alsharif MH, Masud M.   +3 more
europepmc   +1 more source

Imaging Venous Transit Time and Blood–Brain Barrier Permeability of the Deep Brain

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Imaging of venous vessels with advanced pulse sequences allows the assessment of important hemodynamic parameters. Previous work has measured venous transit time (VTT) and blood–brain barrier (BBB) water permeability in cortical tissue.
Wen Shi, Jie Song, Jiani Wu, Yifan Gou, Zhiyi Hu, Vivek Yedavalli, Zixuan Lin, Hanzhang Lu   +7 more
wiley   +1 more source

Optimizing FBS 3D positions for sum rate maximization in downlink NOMA 6G network. [PDF]

Sci Rep
Alzubaidi OTH, Alhashimi HF, Alheejawi S, Hindia MN, Dimyati K, Noordin KA, Nasser A.   +6 more
europepmc   +1 more source

Consistent Quadratic Phase Formation in 3D Fast Spin Echo Using Frequency‐Modulated RF Pulses

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Frequency‐modulated (FM) RF pulses achieve broadband excitation with low RF peak power, which is required in MRI with inhomogeneous magnetic fields. However, the quadratic phase generated with FM pulses makes it difficult to use them in fast spin echo (FSE), because even and odd refocused echoes have different spatial phase profiles ...
Naoharu Kobayashi, Michael Garwood
wiley   +1 more source

Joint Sensing and Secure Communications in RIS-Based Symbiotic Radio Systems. [PDF]

Entropy (Basel)
Yang J, Huang KW.
europepmc   +1 more source