Spiral scanning X-ray fluorescence computed tomography

被引：9

作者：

de Jonge, Martin D. ^{[1
]}

Kingston, Andrew M. ^{[2
]}

Afshar, Nader ^{[1
]}

Garrevoet, Jan ^{[3
]}

Kirkham, Robin ^{[4
]}

Ruben, Gary ^{[1
,5
]}

Myers, Glenn R. ^{[2
]}

Latham, Shane J. ^{[2
]}

Howard, Daryl L. ^{[1
]}

Paterson, David J. ^{[1
]}

Ryan, Christopher G. ^{[4
]}

McColl, Gawain ^{[6
]}

机构：

[1] ANSTO, Australian Synchrotron, 800 Blackburn Rd, Clayton, Vic 3168, Australia

[2] Australian Natl Univ, Res Sch Phys & Engn, Dept Appl Math, Acton, ACT 2601, Australia

[3] Deutsches Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany

[4] CSIRO Earth Sci & Res Engn, Clayton, Vic 3168, Australia

[5] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia

[6] Florey Inst Neurosci & Mental Hlth, Parkville, Vic 3010, Australia

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 19期

关键词：

CAENORHABDITIS-ELEGANS; RECONSTRUCTION; CHALLENGES; RESOLUTION; ALIGNMENT; ANGLE;

D O I：

10.1364/OE.25.023424

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Scanning X-ray fluorescence tomography was once considered impractical due to prohibitive measurement time requirements but is now common for investigating metal distributions within small systems. A recent look-ahead to the possibilities of 4th-generation synchrotron light sources [ J. Synchrotron. Radiat. 21, 1031 (2014)] raised the possibility of a spiral-scanning measurement scheme where motion overheads are almost completely eliminated. Here we demonstrate the spiral scanning measurement and use Fourier ring correlation analysis to interrogate sources of resolution degradation. We develop an extension to the Fourier ring correlation formalism that enables the direct determination of the resolution from the measured sinogram data, greatly enhancing its power as a diagnostic tool for computed tomography. (C) 2017 Optical Society of America

引用

页码：23424 / 23436

页数：13

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