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Metal-free MRI contrast agent could be safer for some patients
Metal-free MRI contrast agent safer for some patients
2017/7/24
To enhance the visibility of organs as they are scanned with magnetic resonance imaging (MRI), patients are usually injected with a compound known as a contrast agent before going into the scanner. Th...
On the relationship between encapsulated ultrasound contrast agent and pressure
relationship encapsulated ultrasound contrast agent pressure
2010/1/6
Noninvasive measurement of pressure within the heart cavities and other internal organs
(e.g., kidney, liver) has significant clinical value but currently is not feasible. Noninvasive
pressure estim...
Online Tracking of Migrating and Proliferating Cells in Phase-Contrast Microscopy
Online Tracking Phase-Contrast Microscopy Proliferating Cells
2009/12/22
Automated visual-tracking of cell population in vitro using
phase-contrast time-lapse microscopy is vital for the
quantitative and systematic study of cell behaviors, including
spatiotemporal quant...
Impacts of Filtration on Contrast-Detail Detectability of an X-ray Imaging System
Contrast-Detail Detectability X-ray Imaging System
2009/9/8
The purpose of this study is to investigate the impacts of added filtration on the contrast-detail detectability of a digital X-ray imaging system for small animal studies. A digital X-ray imaging sys...
Virtual Contrast for Coronary Vessels Based on Level Set Generated Subvoxel Accurate Centerlines
Coronary Vessels Centerlines
2009/9/8
We present a tool for tracking coronary vessels in MRI scans of the human heart to aid in the screening of heart diseases. The vessels are identified through a single click inside each vessel present ...
A Parallel Reconstruction Scheme in Fluorescence Tomography Based on Contrast of Independent Inversed Absorption Properties
Fluorescence Tomography Independent Inversed Absorption Properties
2009/9/8
Based on an independent forward model in fluorescent tomography, a parallel reconstructed scheme for inhomogeneous mediums with unknown absorption property is proposed in this paper. The method consid...
X-Ray Phase-Contrast Imaging with Three 2D Gratings
X-Ray Phase-Contrast Imaging Three 2D Gratings
2009/9/4
X-ray imaging is of paramount importance for clinical and preclinical imaging but it is fundamentally restricted by the attenuation-based contrast mechanism, which has remained essentially the same si...
Effect of Edge-Preserving Adaptive Image Filter on Low-Contrast Detectability in CT Systems: Application of ROC Analysis
CT Systems ROC Analysis
2009/9/4
Objective. For the multislice CT (MSCT) systems with a larger number of detector rows, it is essential to employ dose-reduction techniques. As reported in previous studies, edge-preserving adaptive im...
Analysis of Cardiac Torsion by Strain Calculation with MR Phase-contrast Image
Heart Twist MR-PC Three-dimensional Analysis Medical Image
2009/6/1
Torsion movement of the left ventricle has significance in ventricle contraction and dilation. In this study, we propose methods of analyzing torsion movement of whole body and local region of left ve...
Superparamagnetic iron oxide nanoparticle-embedded encapsulated microbubbles as dual contrast agents of magnetic resonance and ultrasound imaging
Superparamagnetic iron oxide nanoparticles Encapsulated microbubbles MRI (magnetic resonance imaging)
2010/7/16
An encapsulated microbubble (EMB) of a novel construct is proposed to enhance the magnetic resonance imaging contrast by introducing superparamagnetic iron oxide (SPIO) nanoparticles (mean diameter is...
Optical and electrical recording of neural activity evoked by graded contrast visual stimulus
Optical and electrical recording neural activity graded contrast visual stimulus
2010/2/25
In this study, we present the measuring system; the results consist in concurrent recordings of hemodynamic changes and evoked potential responses emerging from different contrast levels of a patterne...
Image fusion for dynamic contrast enhanced magnetic resonance imaging
Image fusion dynamic contrast magnetic resonance imaging
2010/3/1
In this paper, image fusion based on Kernel Principal Component Analysis (KPCA) is proposed for the first time. It is demonstrated that a priori knowledge about the data domain can be easily incorpora...
Atomic Force Microscope Image Contrast Mechanisms on Supported Lipid Bilayers
Atomic Force Microscope Image Mechanisms Supported Lipid Bilayers
2009/12/22
Atomic Force Microscope Image Contrast Mechanisms on Supported Lipid Bilayers.