User profiles for Andriy Andreyev

Andriy Andreyev

Carl Zeiss X-Ray Microscopy
Verified email at zeiss.com
Cited by 619

Fast image reconstruction for Compton camera using stochastic origin ensemble approach

A Andreyev, A Sitek, A Celler - Medical physics, 2011 - Wiley Online Library
Purpose: Compton camera has been proposed as a potential imaging tool in astronomy,
industry, homeland security, and medical diagnostics. Due to the inherent geometrical …

Dual-radioisotope PET data acquisition and analysis

RS Miyaoka, WCJ Hunter, A Andreyev… - 2011 IEEE Nuclear …, 2011 - ieeexplore.ieee.org
This study experimentally evaluates a novel approach for dual radioisotope PET imaging.
The method relies on one radioisotope being a pure positron emitter and the other …

Resolution recovery for Compton camera using origin ensemble algorithm

A Andreyev, A Celler, I Ozsahin, A Sitek - Medical physics, 2016 - Wiley Online Library
Purpose: Compton cameras (CCs) use electronic collimation to reconstruct the images of
activity distribution. Although this approach can greatly improve imaging efficiency, due to …

Accelerate your 3D X-ray failure analysis by deep learning high resolution reconstruction

A Gu, A Andreyev, M Terada, B Zee… - ISTFA …, 2021 - dl.asminternational.org
3D X-ray tomography plays a critical role in electronic device failure analysis, but it can take
several hours to overnight to get sufficient resolution in fault regions to detect and identify …

Pinhole SPECT reconstruction using blobs and resolution recovery

A Andreyev, M Defrise… - IEEE transactions on …, 2006 - ieeexplore.ieee.org
We study the performance of an iterative reconstruction algorithm for single pinhole SPECT,
in which the correction for pinhole blurring is realized by averaging multiple projection rays …

Reconstructed image spatial resolution of multiple coincidences Compton imager

A Andreyev, A Sitek, A Celler - IEEE Transactions on Nuclear …, 2010 - ieeexplore.ieee.org
We study the multiple coincidences Compton imager (MCCI) which is based on a
simultaneous acquisition of several photons emitted in cascade from a single nuclear decay. …

Resolution recovery in pinhole SPECT based on multi-ray projections: a phantom study

C Vanhove, A Andreyev, M Defrise, J Nuyts… - European journal of …, 2007 - Springer
Purpose Low sensitivity can become a major problem when very small pinholes are used in
SPECT imaging. Although a larger pinhole aperture will improve the sensitivity, this will be …

[PDF][PDF] Improving throughput and image quality of high-resolution 3D X-ray microscopes using deep learning reconstruction techniques

…, MN Rad, M Andrew, A Andreyev… - 11th Conference on …, 2022 - ndt.net
In high-resolution X-ray computed tomography (CT), also known as 3D X-ray microscopy (XRM),
low photon counts can lead to extremely long data acquisition times (in the order of …

Stochastic image reconstruction method for Compton camera

A Andreyev, A Sitek, A Celler - 2009 IEEE Nuclear Science …, 2009 - ieeexplore.ieee.org
Compton camera has been proposed as an imaging tool in astronomy, industry, homeland
security and medical imaging where source location can be identified based on detection of …

[PDF][PDF] Improving scan time and image quality in 3D X-ray microscopy by deep learning reconstruction techniques

H Villarraga-Gómez, A Andreyev, M Andrew… - Proc. 35th ASPE Annual … - academia.edu
Applications of 3D X-ray imaging techniques have expanded from their initial and most
popular field of application, medical diagnostics, to industrial measurements [1]. Recent …