Zobrazeno 1 - 10
of 218
pro vyhledávání: '"Lack, A."'
Autor:
N. Robert Bennett, Josh Star-Lack, Amy Shiroma, Richard E. Colbeth, Adam Wang, Mingshan Sun, Jin Zhang, Minghui Lu, Linxi Shi
Publikováno v:
Med Phys
Purpose Metal artifact remains a challenge in cone-beam CT images. Many image domain-based segmentation methods have been proposed for metal artifact reduction (MAR), which require two-pass reconstruction. Such methods first segment metal from a firs
Akademický článek
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Akademický článek
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Publikováno v:
Medical Physics. 46:925-933
PURPOSE: To improve dose reporting of CT scans, patient-specific organ doses are highly desired. However, estimating the dose distribution in a fast and accurate manner remains challenging, despite advances in Monte Carlo methods. In this work, we pr
Autor:
Minghui Lu, Edward Shapiro, Josh Star-Lack, Richard E. Colbeth, N. Robert Bennett, Linxi Shi, Jin Zhang, Adam Wang
Publikováno v:
Med Phys
Purpose Dual-energy (DE) x-ray imaging has many clinical applications in radiography, fluoroscopy, and CT. This work characterizes a prototype dual-layer (DL) flat-panel detector (FPD) and investigates its DE imaging capabilities for applications in
Publikováno v:
Medical Physics. 45:1899-1913
PURPOSE: To describe Acuros(®) CTS, a new software tool for rapidly and accurately estimating scatter in x-ray projection images by deterministically solving the linear Boltzmann transport equation (LBTE). METHODS: The LBTE describes the behavior of
Autor:
Adam Strzelecki, Peter Munro, Dieter Seghers, Elaine Yu, Marcus Brehm, Pascal Paysan, Alexander Maslowski, Josh Star-Lack, Philippe Messmer, Adam Wang, Mathias Lehmann
Publikováno v:
Medical Physics. 45:1914-1925
Purpose To correct for scatter in kV cone-beam CT (CBCT) projection data on a clinical system using a new tool, Acuros® CTS, that estimates scatter images rapidly and accurately by deterministically solving the linear Boltzmann transport equation. M
Akademický článek
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Autor:
Daniel Morf, Stephen S.F. Yip, Josh Star-Lack, Joerg Rottmann, George Zentai, Rony Füglistaller, Ross Berbeco, H Chen
Publikováno v:
Medical Physics. 44:4847-4853
Purpose We hypothesized that combining multiple amorphous silicon flat panel layers increases photon detection efficiency in an electronic portal imaging device (EPID), improving image quality and tracking accuracy of low-contrast targets during radi
Autor:
Daniel Morf, Adam Wang, Marios Myronakis, Paul Baturin, Joerg Rottmann, Ross Berbeco, Daniel Shedlock, Josh Star-Lack, Yue-Houng Hu
Publikováno v:
Medical Physics. 44:4213-4222
Purpose A novel Megavoltage (MV) multi-layer imager (MLI) design featuring higher detective quantum efficiency and lower noise than current conventional MV imagers in clinical use has been recently reported. Optimization of the MLI design for multipl