scholarly journals Evaluation of microbubble contrast agents for dynamic imaging with x-ray phase contrast

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
T. P. Millard ◽  
M. Endrizzi ◽  
N. Everdell ◽  
L. Rigon ◽  
F. Arfelli ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Phase Contrast ◽  
Dynamic Imaging ◽  
X Ray ◽  
Microbubble Contrast Agents

Exploring experimental parameter choice for rapid speckle-tracking phase-contrast X-ray imaging with a paper analyzer

2015 ◽  
Vol 22 (5) ◽  
pp. 1279-1288 ◽  
Author(s):  
Isobel A. Aloisio ◽  
David M. Paganin ◽  
Christopher A. Wright ◽  
Kaye S. Morgan
Keyword(s):  
Real Time ◽  
Speckle Tracking ◽  
Phase Contrast ◽  
Experimental Parameter ◽  
Dynamic Imaging ◽  
Synchrotron Source ◽  
X Ray ◽  
Detector Distance ◽  
X Ray Imaging ◽  
Set Up

Phase-contrast X-ray imaging using a paper analyzer enables the visualization of X-ray transparent biological structures using the refractive properties of the sample. The technique measures the sample-induced distortions of a spatially random reference pattern to retrieve quantitative sample information. This phase-contrast method is promising for biomedical application due to both a simple experimental set-up and a capability for real-time imaging. The authors explore the experimental configuration required to achieve robustness and accuracy in terms of (i) the paper analyzer feature size, (ii) the sample-to-detector distance, and (iii) the exposure time. Results using a synchrotron source confirm that the technique achieves accurate phase retrieval with a range of paper analyzers and at exposures as short as 0.5 ms. These exposure times are sufficiently short relative to characteristic physiological timescales to enable real-time dynamic imaging of living samples. A theoretical guide to the choice of sample-to-detector distance is also derived. While the measurements are specific to the set-up, these guidelines, the example speckle images, the strategies for analysis in the presence of noise and the experimental considerations and discussion will be of value to those who wish to use the speckle-tracking paper analyzer technique.

Dynamic imaging of the lungs using x-ray phase contrast

2005 ◽  
Vol 50 (21) ◽  
pp. 5031-5040 ◽  
Author(s):  
R A Lewis ◽  
N Yagi ◽  
M J Kitchen ◽  
M J Morgan ◽  
D Paganin ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Dynamic Imaging ◽  
X Ray

Blood Vessels: Depiction at Phase-Contrast X-ray Imaging without Contrast Agents in the Mouse and Rat—Feasibility Study

Radiology ◽  
2000 ◽  
Vol 217 (2) ◽  
pp. 593-596 ◽  
Author(s):  
Atsushi Momose ◽  
Tohoru Takeda ◽  
Yuji Itai
Keyword(s):  
Contrast Agents ◽  
Blood Vessels ◽  
Feasibility Study ◽  
Phase Contrast ◽  
X Ray ◽  
X Ray Imaging

Low density contrast agents for x-ray phase contrast imaging: the use of ambient air for x-ray angiography of excised murine liver tissue

2008 ◽  
Vol 53 (23) ◽  
pp. 6911-6923 ◽  
Author(s):  
Christopher M Laperle ◽  
Theron J Hamilton ◽  
Philip Wintermeyer ◽  
Evan J Walker ◽  
Daxin Shi ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Liver Tissue ◽  
Phase Contrast ◽  
Ambient Air ◽  
Phase Contrast Imaging ◽  
Density Contrast ◽  
Low Density ◽  
Contrast Imaging ◽  
X Ray ◽  
Murine Liver

Image Quality Analysis of X-ray Grating Interferometer Using Integrating-bucket Method

2020 ◽  
Vol 64 (2) ◽  
pp. 20503-1-20503-5
Author(s):  
Faiz Wali ◽  
Shenghao Wang ◽  
Ji Li ◽  
Jianheng Huang ◽  
Yaohu Lei ◽  
...  
Keyword(s):  
Image Quality ◽  
Phase Contrast ◽  
Quality Analysis ◽  
Phase Contrast Imaging ◽  
Phase Image ◽  
Contrast Imaging ◽  
High Quality ◽  
Image Quality Analysis ◽  
X Ray ◽  
Grating Interferometer

Abstract Grating-based x-ray phase-contrast imaging has the potential to enhance image quality and provide inner structure details non-destructively. In this work, using grating-based x-ray phase-contrast imaging system and employing integrating-bucket method, the quantitative expressions of signal-to-noise ratios due to photon statistics and mechanical error are analyzed in detail. Photon statistical noise and mechanical error are the main sources affecting the image noise in x-ray grating interferometry. Integrating-bucket method is a new phase extraction method translated to x-ray grating interferometry; hence, its image quality analysis would be of great importance to get high-quality phase image. The authors’ conclusions provide an alternate method to get high-quality refraction signal using grating interferometer, and hence increases applicability of grating interferometry in preclinical and clinical usage.

Numerical Simulations and Preliminary Experiments of the Principle of X-Ray In-Line Phase-Contrast Imaging

2010 ◽  
Vol 20 (5) ◽  
pp. 1156-1165 ◽  
Author(s):  
Shao-Run GONG ◽  
Feng GAO ◽  
Hong LIU
Keyword(s):  
Numerical Simulations ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

Numerical analysis of shift error in X-ray phase contrast imaging for large field of view

2017 ◽  
Vol 34 (1) ◽  
pp. 8
Author(s):  
Jianheng Huang ◽  
Yaohu Lei ◽  
Xin Liu ◽  
Jinchuan Guo ◽  
Ji Li ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Phase Contrast ◽  
Field Of View ◽  
Phase Contrast Imaging ◽  
Large Field ◽  
Contrast Imaging ◽  
X Ray
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