Track topics on Twitter Track topics that are important to you
Since classical lensless ptychographic iterative engine (PIE) method can retrieve both the sample amplitude and phase distributions with high resolution, fast convergence speed and large field of view, it has been widely used in various applications especially in short wavelength imaging such as X-ray or electron beam fields. However, traditional PIE often requires mechanical illumination or sample scanning, inevitably complicating the imaging system. In order to simplify its system, we design a Möllenstedt biprism based shearing PIE method, which essentially utilizes the relative motion of the two deflected waves obtained by loading different voltages on the Möllenstedt biprism to scan the sample instead of the mechanical transverse scan in the classical PIE method. Numerical computations and experiments with visible light prove that the shearing PIE method can extract the sample amplitude and phase distributions from multiple shearing diffraction patterns with high accuracy and fast convergence speed even without knowing the precise Möllenstedt biprism information. Our results show that Möllenstedt biprism based shearing PIE is suitable for quantitative short wavelength imaging.
This article was published in the following journal.
We report a method for quantitative phase recovery and simultaneous electron energy loss spectroscopy analysis using ptychographic reconstruction of a data set of "hollow" diffraction patterns. This h...
The concept of transport mediated through the dynamics of "jumping" particles is used to develop an iterative method for obtaining steady-state solutions to the nonlocal transport equation in two dime...
In this paper, we present an interval MULTIMOORA method with complete interval computation in which the interval distances of interval numbers and preference matrix are used. In addition, we propose a...
Evaluation of image quality and radiation dose saving comparing knowledge model-based iterative reconstruction on 80-kV CT pulmonary angiography (CTPA) with hybrid iterative reconstruction on 100-kV CT.
To evaluate dose reduction and image quality of 80-kV CT pulmonary angiography (CTPA) reconstructed with knowledge model-based iterative reconstruction (IMR), and compared with 100-kV CTPA with hybrid...
In this paper, we present an iterative reconstruction for photon-counting CT using prior image constrained total generalized variation (PICTGV). This work aims to exploit structural correlation in the...
The iTrackFitness study aims to test the "engagement engine" that was developed from activity tracker and survey data gathered during phase I of the study. For the current phase the "engag...
Increasing radiation exposure by medical examinations is getting more concerns. For optimal medical imaging, reducing radiation exposure with preservation image quality is important. One o...
Peripherally Inserted Central Catheter (PICC) and port-a-cath (PAC) are the most commonly medical devices used for the administration of chemotherapy. Placement of these devices via centr...
Unexpected adverse health events resulting in a hospital admission can be potentially avoided by leveraging novel physiological sensors combined with advanced computational techniques to p...
The purpose of this study is to assess the usability of the Janssen Autism Knowledge Engine (JAKE) as a system to monitor clinical outcomes in autism spectrum disorder (ASD) (severe abnorm...
A method of generating a large library of randomized nucleotides and selecting NUCLEOTIDE APTAMERS by iterative rounds of in vitro selection. A modified procedure substitutes AMINO ACIDS in place of NUCLEOTIDES to make PEPTIDE APTAMERS.
A computer based method of simulating or analyzing the behavior of structures or components.
Two-wheeled, engine-driven vehicles.
An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
A method of chemical analysis based on the detection of characteristic radionuclides following a nuclear bombardment. It is also known as radioactivity analysis. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...