Results 91 to 100 of about 41,195 (241)

Non‐Subtractive Arterial Spin Labeling‐Based (NSASL) Renal Magnetic Resonance Angiography (MRA): Development and Clinical Feasibility Evaluation

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Non‐contrast renal MR angiography (MRA) is valuable for patients who cannot receive contrast agents or when avoiding radiation is desired. However, the conventional inflow inversion recovery (IFIR) method is limited by incomplete background suppression, venous contamination, and motion sensitivity.
Yulin Wang, Ye Yuan, Kun Yan, Jichang Zhang, Jie Zeng, Shengyang Niu, Shiying Ke, Chendie Yao, Bin Chen, Qi Dai, Liping Guo, Jianjun Zheng, Thomas Meersmann, Chengbo Wang   +13 more
wiley   +1 more source

Analysis of Upper Airway Morphology Using Four‐Dimensional Dynamic MRI With Active Deep Learning‐Based Automatic Segmentation

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Upper‐airway morphology changes during breathing can be captured with cine 4D MRI. Active‐learning nnU‐Net reduces manual labeling while maintaining accuracy. Purpose For automatic upper airway segmentation on free‐breathing cine 4D MRI using active learning and quantifying dynamic changes under two mouth positions.
Cheng‐Yang Yu, Meng‐Chen Chung, Yunn‐Jy Chen, Han‐Wei Wang, Jonathan X. Zhou, Shih‐Lung Chen, Kevin T. Chen, Tiffany Ting‐Fang Shih   +7 more
wiley   +1 more source

Comparison of Single‐Breath and Multi‐Breath Xe‐MRI in the Longitudinal Assessment of Treatment in Children With Cystic Fibrosis

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Elexacaftor/tezacaftor/ivacaftor (ETI) is a current standard therapy for pediatric cystic fibrosis (CF). Multiple‐breath washout 129Xe MRI (MBW Xe‐MRI) is improved following 1 month of treatment. However, the utility of MBW Xe‐MRI over extended ETI treatment and its comparison to single‐breath Xe‐MRI and pulmonary function tests ...
Faiyza S. Alam, Samal Munidasa, Brandon Zanette, Daniel Li, Sharon Braganza, Felix Ratjen, Giles Santyr   +6 more
wiley   +1 more source

Interleaving Strategies [PDF]

, 2011
Heeren, B., Jeuring, J.T.
openaire   +3 more sources

Quantitative Real‐Time MRI for the Assessment of Gastric Motility

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Current reference standards for measuring gastric emptying and motility are not considered optimal due to the time required, ionizing radiation, invasiveness, and spatial resolution. Purpose To assess gastric motility using novel real‐time dynamic magnetic resonance imaging in combination with static measurements for gastric ...
Lydia Neubauer, Leonie Forstreuter, Fabian Winter, Fiona Mankertz, Mark O. Wielpütz, Donata S. Grajecki, Antje Steveling, Ali A. Aghdassi, Sebastian Zeißig, Matthew D. Blackledge, Dirk Voit, Jens Frahm, Susanne Schnell, Werner Weitschies, Linus Großmann   +14 more
wiley   +1 more source

Approaches to Computed Tomography Education for Radiography Students

Journal of Medical Radiation Sciences, EarlyView.
The aim of this narrative review was to explore the current published literature relating to CT teaching methods and assessment of diagnostic radiography students during university training. Existing CT education evaluations focus on student satisfaction and usability of tools, with post‐lesson knowledge gains reported. Future work should shift towards
Yobelli Alexandra Jimenez, Frances Gray, Minh Chau, Franziska Jerjen, Adrian Repole, Dania Abu Awwad   +5 more
wiley   +1 more source

Design of a 2.5 kW Four-Level Interleaved Flying Capacitor Multilevel Totem-Pole PFC Converter With AC-Side Passive Volume Optimization

IEEE Open Journal of Power Electronics
In this article, a high-efficiency and high-density 2.5 kW four-level interleaved flying capacitor multilevel (FCML) totem-pole bridgeless power-factor-correction (PFC) rectifier with 200 V GaN devices is analyzed, designed, and tested.
Naveed Ishraq, Ayan Mallik
doaj   +1 more source

Single‐Shot Full‐Stokes Analysis of Partially‐Polarized Light With a Photonic Deep Random Neural Network

Laser &Photonics Reviews, EarlyView.
Photonic neural networks are emerging as a powerful tool for analyzing light. The article reports a photonic deep random neural network that performs single‐shot low‐latency measurements of the state and degree of polarization with high accuracy. Using only a stack of glass diffusers on top of a small camera sensor, this neuromorphic polarization ...
Alessandro Petrini, Claudio Conti, Davide Pierangeli   +2 more
wiley   +1 more source

Fast Simulation of Wide‐Angle Coherent Diffractive Imaging

Laser &Photonics Reviews, EarlyView.
The propagation multi‐slice Fourier transform method is introduced as an accurate and efficient approach for describing light scattering for arbitrarily shaped objects. Its exceptional suitability for simulating coherent diffractive imaging of nanoparticles in the XUV and soft X‐ray range is demonstrated.
Paul Tuemmler, Julia Apportin, Thomas Fennel, Christian Peltz   +3 more
wiley   +1 more source

General‐Purpose Hexagonal Programmable Photonic Integrated Circuit with a >30 GHz Free Spectral Range

Laser &Photonics Reviews, EarlyView.
A compact and low insertion loss programmable photonic circuit is demonstrated based on a 7‐cell hexagonal waveguide mesh with a large free spectral range (FSR) of 31 GHz for a 6‐gate ring resonator configuration. Vernier rings and a dual‐injected ring configuration are demonstrated on this circuit with a further improved FSR of 93 GHz.
Yu Zhang, Xiangfeng Chen, Lukas Van Iseghem, Iman Zand, Hasan Salmanian, Antonio Ribeiro, Wim Bogaerts   +6 more
wiley   +1 more source