Soil matrix study using a hybrid a-Se/CMOS pixel detector for CT scanning

Akyl Swaby; Adam S. Wang; Michael G. Farrier; Weixin Cheng; Shiva Abbaszadeh

doi:10.1117/12.2646496

17 October 2022 Soil matrix study using a hybrid a-Se/CMOS pixel detector for CT scanning

Akyl Swaby, Adam S. Wang, Michael G. Farrier, Weixin Cheng, Shiva Abbaszadeh

Author Affiliations +

Proceedings Volume 12304, 7th International Conference on Image Formation in X-Ray Computed Tomography; 123041E (2022) https://doi.org/10.1117/12.2646496
Event: Seventh International Conference on Image Formation in X-Ray Computed Tomography (ICIFXCT 2022), 2022, Baltimore, United States

Abstract

Computed tomography (CT) is a non-invasive means of localizing a region of interest within an object, which enables the investigation of soil distributions and localized flow processes within soil pore systems. CT scanning allows for cross-sectional successions that provide visibility within the environment of plant samples. Knowledge of the characteristics of the soil pore system is essential for evaluating various processes that take place between root-soil interactions. In this study, we investigate the potential application of a high-resolution amorphous selenium (a-Se) direct conversion detector on complementary metal-oxide-semiconductor (CMOS) readouts for micro-CT scanning of a soil matrix to image the status of aggregation and networks of pore spaces within intact soil. The combination of the intrinsic high spatial resolution of a-Se and small pixel CMOS readouts provide detailed visualization in the soil aggregates of the plant samples. The x-ray energy and plant soil thickness were varied during the investigation for imaging the root-soil. A 10 μm spatial resolution and noise limited performance of eight photons/pixel at 20 keV were achieved. High attenuation of x-rays in thick soil poses challenges however fine details are observable in thinner samples and care should be taken when choosing soil thickness and container material.

Citation Download Citation

Akyl Swaby, Adam S. Wang, Michael G. Farrier, Weixin Cheng, and Shiva Abbaszadeh "Soil matrix study using a hybrid a-Se/CMOS pixel detector for CT scanning", Proc. SPIE 12304, 7th International Conference on Image Formation in X-Ray Computed Tomography, 123041E (17 October 2022); https://doi.org/10.1117/12.2646496

ACCESS THE FULL ARTICLE

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

X-ray computed tomography

X-rays

Soil science

X-ray detectors

Spatial resolution

X-ray imaging

Show All Keywords

RELATED CONTENT

A study of EM failure in a micro scale Pb...
Proceedings of SPIE (September 11 2014)

High resolution laboratory grating-based x-ray phase-contrast CT
Proceedings of SPIE (March 09 2017)

Focal spot size reduction using asymmetric collimation to enable reduced...
Proceedings of SPIE (March 09 2017)

Lab-based x-ray nanoCT imaging
Proceedings of SPIE (March 09 2017)

Evaluation of x ray detectors for dual modality CT SPECT...
Proceedings of SPIE (November 26 2002)

Four arm variable resolution x ray detector for CT target...
Proceedings of SPIE (April 20 2005)

X ray tube based phase CT spectrum polychromatics and...
Proceedings of SPIE (March 16 2011)

Subscribe to Digital Library

Receive Erratum Email Alert

Show All Keywords

Keywords/Phrases

Search In:

Publication Years