Dr. Andrew G. Peele Profile

Dr. Andrew G. Peele

at Australian Synchrotron

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 4 April 2022 Poster + Paper

Poster + Paper

Energy optimisation of propagation-based phase-contrast computed tomography: a quantitative image quality assessment

Belinda Lim, Sarah Lewis, Benedicta Arhatari, Yakov Nesterets, Sheridan Mayo, Darren Thomposon, Jane Fox, Beena Kumar, Daniel Hausermann, Anton Maksimenko, Christopher Hall, Matthew Dimmock, Darren Lockie, Mary Rickard, Nicola Giannotti, Andrew Peele, Harry Quiney, Timur Gureyev, Patrick Brennan, SeyedamirTavakoli Taba

Proceedings Volume 12031, 120313O (2022) https://doi.org/10.1117/12.2608596

KEYWORDS: Image quality, X-rays, Breast, Signal to noise ratio, X-ray imaging, Quality measurement, Visualization, Visibility, Phase contrast

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SPIE Journal Paper | 12 July 2021

Effect of x-ray energy on the radiological image quality in propagation-based phase-contrast computed tomography of the breast

Sarina Wan, Benedicta Arhatari, Yakov Nesterets, Sheridan Mayo, Darren Thompson, Jane Fox, Beena Kumar, Zdenka Prodanovic, Daniel Hausermann, Anton Maksimenko, Christopher Hall, Matthew Dimmock, Konstantin Pavlov, Darren Lockie, Mary Rickard, Ziba Gandomkar, Alaleh Alaleh, Elham Vafa, Andrew Peele, Harry Quiney, Sarah Lewis, Timur Gureyev, Patrick Brennan, Seyedamir Tavakoli Taba

JMI, Vol. 8, Issue 05, 052108, (July 2021) https://doi.org/10.1117/12.10.1117/1.JMI.8.5.052108

KEYWORDS: Image quality, X-rays, X-ray imaging, Breast, Sensors, Breast cancer, Tissues, Radio propagation, X-ray detectors, X-ray computed tomography

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Purpose: Breast cancer is the most common cancer in women in developing and developed countries and is responsible for 15% of women’s cancer deaths worldwide. Conventional absorption-based breast imaging techniques lack sufficient contrast for comprehensive diagnosis. Propagation-based phase-contrast computed tomography (PB-CT) is a developing technique that exploits a more contrast-sensitive property of x-rays: x-ray refraction. X-ray absorption, refraction, and contrast-to-noise in the corresponding images depend on the x-ray energy used, for the same/fixed radiation dose. The aim of this paper is to explore the relationship between x-ray energy and radiological image quality in PB-CT imaging. Approach: Thirty-nine mastectomy samples were scanned at the imaging and medical beamline at the Australian Synchrotron. Samples were scanned at various x-ray energies of 26, 28, 30, 32, 34, and 60 keV using a Hamamatsu Flat Panel detector at the same object-to-detector distance of 6 m and mean glandular dose of 4 mGy. A total of 132 image sets were produced for analysis. Seven observers rated PB-CT images against absorption-based CT (AB-CT) images of the same samples on a five-point scale. A visual grading characteristics (VGC) study was used to determine the difference in image quality. Results: PB-CT images produced at 28, 30, 32, and 34 keV x-ray energies demonstrated statistically significant higher image quality than reference AB-CT images. The optimum x-ray energy, 30 keV, displayed the largest area under the curve ( AUCVGC ) of 0.754 (p = 0.009). This was followed by 32 keV (AUCVGC = 0.731, p ≤ 0.001), 34 keV (AUCVGC = 0.723, p ≤ 0.001), and 28 keV (AUCVGC = 0.654, p = 0.015). Conclusions: An optimum energy range (around 30 keV) in the PB-CT technique allows for higher image quality at a dose comparable to conventional mammographic techniques. This results in improved radiological image quality compared with conventional techniques, which may ultimately lead to higher diagnostic efficacy and a reduction in breast cancer mortalities.

Proceedings Article | 6 July 2018 Paper

Paper

Towards clinic-friendly solutions for patient trials in breast cancer phase contrast imaging

Sarah Lewis, Timur Gureyev, Patrycja Baran, Seyedamir Tavakoli Taba, Serena Pacile, Christian Dullin, Giuliana Tromba, Daniel Hausermann, Andrew Peele, Darren Lockie, Patrick Brennan

Proceedings Volume 10718, 107181P (2018) https://doi.org/10.1117/12.2316498

KEYWORDS: Breast, Breast cancer, Mammography, Cancer, Sensors, Synchrotrons, X-rays, X-ray imaging, Tissues

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Proceedings Article | 2 September 2010 Paper

Paper

High-resolution x-ray phase tomography

Andrew Peele, C. David Thomas, John Clement, Benedicta Arhatari, Kevin Hannah, Chandni Doshi, Corey Putkunz, Jesse Clark

Proceedings Volume 7804, 780403 (2010) https://doi.org/10.1117/12.862177

KEYWORDS: X-rays, Tomography, Phase contrast, Bone, Image segmentation, X-ray imaging, Laser beam diagnostics, Image resolution, Edge detection, Absorption

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Proceedings Article | 7 September 2006 Paper

Paper

Quantification of reconstruction quality in x-ray phase contrast tomography

Benedicta Arhatari, Keith Nugent, Andrew Peele

Proceedings Volume 6318, 63180R (2006) https://doi.org/10.1117/12.677432

KEYWORDS: Tomography, Spatial frequencies, X-rays, Phase contrast, Phase retrieval, Deconvolution, Contrast transfer function, Absorption, Wave propagation, Sensors

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Proceedings Article | 21 December 2005 Paper

Paper

Process optimisation for compact high aspect ratio SU-8 microstructures using x-ray lithography

K. D. Vora, B. Y. Shew, E. C. Harvey, J. P. Hayes, A. G. Peele

Proceedings Volume 6037, 603701 (2005) https://doi.org/10.1117/12.638457

KEYWORDS: X-rays, Photomasks, X-ray lithography, Diffusion, Lithography, Polymethylmethacrylate, Synchrotron radiation, Photoresist processing, Photoresist materials, Diffraction

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Proceedings Article | 30 August 2005 Paper

Paper

Coherent diffractive imaging using focused beams

Keith Nugent, Andrew Peele, Harry Quiney

Proceedings Volume 5917, 59170A (2005) https://doi.org/10.1117/12.621992

KEYWORDS: Diffraction, Coherence imaging, X-rays, X-ray optics, X-ray diffraction, Crystals, Molecules, Wave propagation, Physics, Data acquisition

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Proceedings Article | 11 October 2004 Paper

Paper

Modeling of the Lobster-ISS x-ray telescope in orbit

Andrew Peele, Hakan Lyngsjo, Roland Crocker, John Markham, Nigel Bannister, Keith Nugent

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.550975

KEYWORDS: X-rays, Sensors, Microchannel plates, X-ray telescopes, Point spread functions, Space telescopes, Computer simulations, Device simulation, Ray tracing, Geometrical optics

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Proceedings Article | 21 November 2002 Paper

Paper

Fabrication of x-ray spiral masks by laser ablation

Andrew Peele, Keith Nugent, Phillip McMahon, David Paterson, Chanh Tran, Adrian Mancuso, Tracy Mackin, Jason Hayes, Erol Harvey, Ian McNulty

Proceedings Volume 4783, (2002) https://doi.org/10.1117/12.451024

KEYWORDS: Spiral phase plates, X-rays, Laser ablation, Excimer lasers, X-ray optics, Phase shift keying, Phase modulation, Microfabrication, Optical vortices, Photomasks

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Proceedings Article | 25 January 2002 Paper

Paper

LOBSTER-ISS: an imaging x-ray all-sky monitor for the International Space Station

George Fraser, Adam Brunton, Nigel Bannister, James Pearson, Martin Ward, Tim Stevenson, D. Watson, Bob Warwick, S. Whitehead, Paul O'Brian, Nicholas White, Keith Jahoda, Kevin Black, Stanley Hunter, Phil Deines-Jones, William Priedhorsky, Steven Brumby, Konstantin Borozdin, Thomas Vestrand, A. Fabian, Keith Nugent, Andrew Peele, Thomas Irving, Steve Price, Steve Eckersley, Ian Renouf, Mark Smith, Arvind Parmar, I. McHardy, P. Uttley, Andrew Lawrence

Proceedings Volume 4497, (2002) https://doi.org/10.1117/12.454217

KEYWORDS: X-rays, Microchannel plates, Sensors, X-ray optics, X-ray astronomy, X-ray imaging, Gamma radiation, Galactic astronomy, Stars, Space telescopes

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Proceedings Article | 21 November 2001 Paper

Paper

LIGA fabrication of high-aspect-ratio lobster-eye optics

Andrew Peele, Thomas Irving, Keith Nugent, Derrick Mancini, Nicolai Moldovan, Todd Christenson

Proceedings Volume 4592, (2001) https://doi.org/10.1117/12.448995

KEYWORDS: Microchannel plates, X-ray telescopes, Plating, Reflection, X-rays, Polymethylmethacrylate, X-ray optics, Surface roughness, Astronomical imaging, Reflectivity

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Proceedings Article | 5 January 2001 Paper

Paper

Faster, better, cheaper metrology of lobster-eye (square-pore) optics

Thomas Irving, Andrew Peele, Keith Nugent, Steven Brumby

Proceedings Volume 4145, (2001) https://doi.org/10.1117/12.411639

KEYWORDS: X-rays, Metrology, Channel projecting optics, X-ray optics, Optics manufacturing, Data modeling, Charge-coupled devices, Optical metrology, Fabrication, Monte Carlo methods

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Proceedings Article | 5 January 2001 Paper

Paper

LIGA for lobster?

Andrew Peele, Thomas Irving, Keith Nugent, Derrick Mancini, Nicolai Moldovan, Todd Christenson, Robert Petre, Steven Brumby, William Priedhorsky

Proceedings Volume 4145, (2001) https://doi.org/10.1117/12.411641

KEYWORDS: Microchannel plates, X-rays, Image quality, Polymethylmethacrylate, Reflectivity, Metals, X-ray optics, Photomasks, Reflection, Telescopes

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Proceedings Article | 18 July 2000 Paper

Paper

Mini-Schmidt array for lobster-eye optics

Andrew Peele, William Zhang, Robert Petre

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391573

KEYWORDS: Microchannel plates, Reflectors, Glasses, Sensors, Optics manufacturing, Optical arrays, X-ray optics, X-rays, Prototyping, Photons

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Proceedings Article | 19 November 1998 Paper

Paper

Practical implementation of lobster-eye optics

William Zhang, Andrew Peele, Robert Petre, Yang Soong, Nicholas White

Proceedings Volume 3444, (1998) https://doi.org/10.1117/12.331256

KEYWORDS: X-rays, Mirrors, Eye, Spatial resolution, X-ray optics, X-ray astronomy, Flat glass, Sensors, Glasses, Cameras

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Proceedings Article | 19 November 1998 Paper

Paper

Recent studies of lobster-eye optics

Andrew Peele, George Fraser, Adam Brunton, Adrian Martin, Rob Rideout, Nicholas White, Robert Petre, W. Bruce Feller

Proceedings Volume 3444, (1998) https://doi.org/10.1117/12.331255

KEYWORDS: Microchannel plates, Reflectivity, X-rays, Optics manufacturing, X-ray optics, Sensors, Reflectors, Hard x-rays, X-ray astronomy, Manufacturing

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Proceedings Article | 6 November 1998 Paper

Paper

Focusing neutrons with a lobster-eye optic

Brendan Allman, Alberto Cimmino, Shaun Griffin, Anthony Klein, Keith Nugent, Ian Anderson, Peter Hoghoj, Andrew Peele

Proceedings Volume 3449, (1998) https://doi.org/10.1117/12.330344

KEYWORDS: Capillaries, Glasses, X-rays, Channel projecting optics, Microchannel plates, Scattering, Photomicroscopy, Monte Carlo methods, Eye, Cladding

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Proceedings Article | 31 August 1998 Paper

Paper

Square microchannel arrays for focusing neutrons and x rays

Alberto Cimmino, Brendan Allman, Steven Brumby, Thomas Irving, Anthony Klein, Keith Nugent, Ian Anderson, Peter Hoghoj, Andrew Peele

Proceedings Volume 3511, (1998) https://doi.org/10.1117/12.324327

KEYWORDS: X-rays, Microchannel plates, Glasses, Reflectivity, X-ray optics, Monte Carlo methods, Optical arrays, X-ray imaging, Reflection, Staring arrays

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Proceedings Article | 15 October 1997 Paper

Paper

Broadband and large-area x-ray omni sky monitor (BLOSM)

William Zhang, Robert Petre, Andrew Peele, Keith Jahoda, F. Marshall, Yang Soong, Nicholas White

Proceedings Volume 3114, (1997) https://doi.org/10.1117/12.283787

KEYWORDS: X-rays, Reflectors, Sensors, Satellites, Gamma radiation, Sun, Glasses, X-ray detectors, Absorption, X-ray optics

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Proceedings Article | 20 June 1995 Paper

Paper

Next generation x-ray all-sky monitor

William Priedhorsky, Andrew Peele, Keith Nugent

Proceedings Volume 2515, (1995) https://doi.org/10.1117/12.212590

KEYWORDS: X-rays, Sensors, X-ray telescopes, Telescopes, Space telescopes, Satellites, Active galactic nuclei, Spherical lenses, X-ray sources, Gamma radiation

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Proceedings Article | 20 June 1995 Paper

Paper

X-ray focusing using lobster eye optics: a comparison of theory with experiment

Andrew Peele, Keith Nugent, Andrei Rode, Kai Gaebel, Martin Richardson, Richard Strack, Walter Siegmund

Proceedings Volume 2515, (1995) https://doi.org/10.1117/12.212593

KEYWORDS: X-rays, Microchannel plates, X-ray optics, Surface roughness, Plasma, Absorbance, Eye, Aluminum, Capillaries, Telescopes

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Proceedings Article | 11 November 1994 Paper

Paper

Focusing of synchrotron x-ray radiation with cylindrically curved arrays of reflectors

Andrei Rode, Andrew Peele, Keith Nugent, Dan Johnson, D. Siddons

Proceedings Volume 2279, (1994) https://doi.org/10.1117/12.193148

KEYWORDS: X-rays, Reflectors, Synchrotrons, Reflectivity, Beam splitters, Manufacturing, Light sources, Optical components, Coating, Mirrors

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Proceedings Article | 11 November 1994 Paper

Paper

Square capillary x-ray optics

Andrew Peele, Brendan Allman, Alberto Cimmino, Andrei Nikulin, Keith Nugent, Stanley Mrowka, Stephen Lane, James Trebes, Richard Strack, Walter Siegmund, Stephen Wilkins

Proceedings Volume 2279, (1994) https://doi.org/10.1117/12.193142

KEYWORDS: Photons, Telescopes, X-rays, Capillaries, Mirrors, Reflectivity, X-ray telescopes, X-ray astronomy, Geometrical optics, Sensors

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Proceedings Article | 1 February 1994 Paper

Paper

Square capillary x-ray optics

Andrew Peele, Brendan Allman, V. Cucevic, Alberto Cimmino, Keith Nugent, Stephen Wilkins, Henry Chapman

Proceedings Volume 2015, (1994) https://doi.org/10.1117/12.167988

KEYWORDS: X-rays, Capillaries, Reflectivity, Mirrors, Geometrical optics, Surface roughness, Microchannel plates, Photography, X-ray optics, Sensors

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Showing 5 of 24 publications

Conference Committee Involvement (2)

Developments in X-Ray Tomography IX

19 August 2014 | San Diego, California, United States

Developments in X-Ray Tomography VIII

13 August 2012 | San Diego, California, United States

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