User profiles for Andrei Pugachev

Andrei Pugachev

Diagnostic Radiology, Oregon Health & Science University
Verified email at OHSU.edu
Cited by 1903

Classification and evaluation strategies of auto‐segmentation approaches for PET: Report of AAPM task group No. 211

…, OR Mawlawi, U Nestle, AB Pugachev… - Medical …, 2017 - Wiley Online Library
Purpose The purpose of this educational report is to provide an overview of the present state‐of‐the‐art
PET auto‐segmentation ( PET ‐ AS ) algorithms and their respective validation, …

Role of beam orientation optimization in intensity-modulated radiation therapy

A Pugachev, JG Li, AL Boyer, SL Hancock… - International Journal of …, 2001 - Elsevier
Purpose: To investigate the role of beam orientation optimization in intensity-modulated
radiation therapy (IMRT) and to examine the potential benefits of noncoplanar intensity-…

Dependence of FDG uptake on tumor microenvironment

A Pugachev, S Ruan, S Carlin, SM Larson… - International Journal of …, 2005 - Elsevier
Purpose: To investigate the factors affecting the 18 F-fluorodeoxyglucose ( 18 F-FDG) uptake
in tumors at a microscopic level, by correlating it with tumor hypoxia, cellular proliferation, …

Assessment of regional tumor hypoxia using 18F-fluoromisonidazole and 64Cu (II)-diacetyl-bis (N4-methylthiosemicarbazone) positron emission tomography …

JA O'Donoghue, P Zanzonico, A Pugachev… - International Journal of …, 2005 - Elsevier
Purpose: To compare two potential positron emission tomography (PET) tracers of tumor
hypoxia in an animal model. Methods and Materials: The purported hypoxia imaging agents 18 …

Incorporating prior knowledge into beam orientaton optimization in IMRT

A Pugachev, L Xing - International Journal of Radiation Oncology* Biology …, 2002 - Elsevier
Purpose : Selection of beam configuration in currently available intensity-modulated radiotherapy
(IMRT) treatment planning systems is still based on trial-and-error search. Computer …

Pseudo beam's-eye–view as applied to beam orientation selection in intensity-modulated radiation therapy

A Pugachev, L Xing - International Journal of Radiation Oncology* Biology …, 2001 - Elsevier
Purpose: To introduce the concept of pseudo beam’s-eye–view (pBEV), to establish a
framework for computer-assisted beam orientation selection in intensity-modulated radiation …

Computer-assisted selection of coplanar beam orientations in intensity-modulated radiation therapy

A Pugachev, L Xing - Physics in Medicine & Biology, 2001 - iopscience.iop.org
In intensity-modulated radiation therapy (IMRT), the incident beam orientations are often
determined by a trial and error search. The conventional beam's-eye view (BEV) tool becomes …

Modeling Elekta VersaHD using the Varian Eclipse treatment planning system for photon beams: A single‐institution experience

…, Z Iqbal, T Chiu, X Gu, A Pugachev… - Journal of applied …, 2019 - Wiley Online Library
The aim of this study was to report a single‐institution experience and commissioning data
for Elekta VersaHD linear accelerators (LINACs) for photon beams in the Eclipse treatment …

In vivo characterization of a reporter gene system for imaging hypoxia-induced gene expression

S Carlin, A Pugachev, X Sun, S Burke, F Claus… - Nuclear medicine and …, 2009 - Elsevier
PURPOSE: To characterize a tumor model containing a hypoxia-inducible reporter gene
and to demonstrate utility by comparison of reporter gene expression to the uptake and …

Comprehensive approach to coregistration of autoradiography and microscopy images acquired from a set of sequential tissue sections

…, G Sundaresan, J Zweit, A Pugachev - Journal of Nuclear …, 2011 - Soc Nuclear Med
Histopathologic validation of a PET tracer requires assessment of colocalization of the tracer
with its intended biologic target. Using thin tissue section autoradiography, it is possible to …