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Computed Tomography

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...

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Updated: Mar 14, 2026

Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages

Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages

Published on: April 13, 2016

Characterization of a photon counting micro computed tomography laboratory setup.

My Celander¹, Robin Krüger¹, Niccolò Peruzzi¹

¹Department of Medical Radiation Physics, Clinical Sciences Lund, Lund University, Barngatan 4, 22185 Lund, Sweden.

Radiation Protection Dosimetry

|March 13, 2026

Summary

This study characterizes an in-house micro computed tomography (CT) X-ray setup. The system achieved a spatial resolution of 12 µm, a valuable metric for micro-CT imaging research.

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Last Updated: Mar 14, 2026

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Area of Science:

Medical Imaging
Physics
Materials Science

Background:

Micro computed tomography (micro-CT) is a powerful imaging technique.
Characterizing X-ray sources and detectors is crucial for optimizing micro-CT performance.
In-house setups require thorough validation for research applications.

Purpose of the Study:

To report the imaging capabilities of a newly developed in-house micro-CT system.
To measure the spatial resolution of the micro-CT setup.
To probe the energy response of the photon-counting detector.

Main Methods:

Utilized a photon-counting detector and a liquid target X-ray source.
Employed the slanted edge method to assess spatial resolution at varying distances.
Used clinically relevant contrast agents to investigate detector energy response.

Main Results:

The spatial resolution was determined to be limited to 12 µm at high sample magnification.
The finite X-ray source spot size was identified as a factor influencing image resolution.
Energy resolution could not be determined with the current experimental setup.

Conclusions:

The developed method for spatial resolution measurement is applicable to similar X-ray setups.
The characterization provides essential data for optimizing micro-CT imaging parameters.
Further experiments are needed to fully assess the detector's energy resolution.