Results 11 to 20 of about 852 (131)

Zero-Shot Self-Supervised Learning of Single Breath-Hold Magnetic Resonance Cholangiopancreatography (MRCP) Reconstruction. [PDF]

Magn Reson Med
ABSTRACT Purpose To investigate the feasibility of zero‐shot self‐supervised learning reconstruction for reducing breath‐hold times in magnetic resonance cholangiopancreatography (MRCP). Methods Breath‐hold MRCP was acquired from 11 healthy volunteers on 3T scanners using an incoherent k‐space sampling pattern, leading to a 14‐s acquisition time and an
Kim J, Nickel MD, Knoll F.
europepmc   +2 more sources

Comparative Performance Analysis of an Open Source Motion-Compensated Cardiac Diffusion Sequence Across Different MRI Systems and Gradient Strengths-A Pilot Study. [PDF]

Magn Reson Med
ABSTRACT Purpose To validate the performance of an open‐source cardiac diffusion sequence framework and to investigate hardware‐based performance differences. Methods Three second order motion compensated sequence files were compiled using Pulseq and applied across different MRI systems to image five volunteers.
Arbes E, Hannum A, Fischer J, Chen Q, Littin S, Maier A, Bock M, Reiss S.   +7 more
europepmc   +2 more sources

Optimized motion-insensitive PDFF mapping of the liver. [PDF]

Magn Reson Med
Abstract Purpose To implement, optimize, and validate parallel imaging (PI)‐accelerated, 2D, flip angle modulated (FAM) chemical shift‐encoded quantification of liver proton‐density fat fraction (PDFF), with motion insensitivity. Methods The optimization cost function that determines flip angles in FAM was generalized for PI.
Tang J, Tamada D, do Vale Souza R, Faacks A, Starekova J, Heidenreich JF, Müller L, Fullerton GC, Buelo CJ, Kammerman J, Brittain JH, Reeder SB, Hernando D.   +12 more
europepmc   +2 more sources

Meningovascular Inflammation in Cerebral Amyloid Angiopathy-Related Cortical Superficial Siderosis. [PDF]

Ann Clin Transl Neurol
ABSTRACT The role of inflammation in cortical superficial siderosis (cSS), a marker of cerebral amyloid angiopathy (CAA) linked to high hemorrhage risk, is unclear. We examined 15 patients with cSS using 3 T post‐contrast vessel wall MRI (VWI) and CSF analysis.
Arndt P, Khadhraoui E, Müller SJ, Neumann K, Mattern H, Meuth SG, Perosa V, Charidimou A, Schreiber S.   +8 more
europepmc   +2 more sources

Acceleration of slice encoding for metal artifact correction at 0.55 T using hexagonal sampling. [PDF]

Magn Reson Med
Abstract Purpose To evaluate a hexagonal sampling approach for accelerated slice encoding for metal artifact correction (SEMAC) at 0.55 T. Contemporary mid‐field systems (0.1 T–1.0 T) show tremendous potential for imaging near metal implants. However, the limited parallel‐imaging options necessitate alternative methods for scan time reduction.
Barlas BA, Keskin K, Li B, Hargreaves BA, Nayak KS.   +4 more
europepmc   +2 more sources

Highly Productive 3D Printing Process to Transcend Intractability in Materials and Geometries via Interactive Machine‐Learning‐Based Technique

Advanced Intelligent Systems, 2023
Herein, a highly productive and defect‐free 3D‐printing system enforced by deep‐learning (DL)‐based anomaly detection and reinforcement‐learning (RL)‐based optimization processes is developed.
Yuseok Kim, Suk Hee Park
doaj   +1 more source

Auto-calibration and synchronization of camera and MEMS-sensors

Труды Института системного программирования РАН, 2018
This article describes our ongoing research on auto-calibration and synchronization of camera and MEMS-sensors. The research is applicable on any system that consists of camera and MEMS-sensors, such as gyroscope. The main task of our research is to find
A. R. Polyakov, A. V. Kornilova, I. A. Kirilenko   +2 more
doaj   +1 more source

Body-IMU autocalibration for inertial hip and knee joint tracking

EAI Endorsed Transactions on Pervasive Health and Technology, 2016
Sensor to body calibration is a key requirement for capturing accurate body movements in applications based on wearable systems. In this paper, we consider the specific problem of estimating the positions of multiple inertial measurement units (IMUs ...
Sarvenaz Salehi, Gabriele Bleser, Attila Reiss, Didier Stricker   +3 more
doaj   +1 more source

Automatic high-bandwidth calibration and reconstruction of arbitrarily sampled parallel MRI. [PDF]

PLoS ONE, 2014
Today, many MRI reconstruction techniques exist for undersampled MRI data. Regularization-based techniques inspired by compressed sensing allow for the reconstruction of undersampled data that would lead to an ill-posed reconstruction problem.
Jan Aelterman, Maarten Naeyaert, Shandra Gutierrez, Hiep Luong, Bart Goossens, Aleksandra Pižurica, Wilfried Philips   +6 more
doaj   +1 more source

3D LiDAR/IMU Calibration Based on Continuous-Time Trajectory Estimation in Structured Environments

IEEE Access, 2021
Sensor calibration is a fundamental step for improving the performance in sensor fusion, the aim of which is to spatially and temporally register sensors with respect to each other.
Shuaixin Li, Li Wang, Jiuren Li, Bin Tian, Long Chen, Guangyun Li   +5 more
doaj   +1 more source