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Computed Tomography

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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.
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Toward a flexible and portable CT scanner.

Jeff Orchard¹, John T W Yeow

¹David R. Cheriton School of Computer Science, University of Waterloo, Canada. jorchard@uwaterloo.ca

Medical Image Computing and Computer-Assisted Intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention

|November 6, 2008

Summary

Portable computed tomography (CT) scanners using carbon nanotube x-ray sources could enable imaging at accident scenes. This nanotechnology advancement promises smaller, lower-power devices for flexible medical diagnostics.

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Area of Science:

Medical Imaging Technology
Nanotechnology Applications
Materials Science

Background:

Current computed tomography (CT) scanners are large, stationary, and require significant power due to hot, power-hungry x-ray filaments.
The immobility and size of conventional CT scanners limit their use in critical, on-site diagnostic scenarios, such as accident scenes.

Purpose of the Study:

To propose a novel design for a portable and flexible CT scanner.
To explore the feasibility of using nanotechnology, specifically carbon nanotubes, for X-ray generation in a compact CT system.
To demonstrate the conceptual viability of this new CT scanner design through software simulation.

Main Methods:

Conceptualization of a portable CT scanner utilizing an addressable array of miniature X-ray emitters and detectors.
Leveraging recent advancements in carbon nanotube technology for room-temperature, low-power X-ray production.
Development and execution of a software simulation to validate the proposed scanner design and image reconstruction strategy.

Main Results:

A basic design for a portable, flexible CT scanner utilizing carbon nanotube X-ray sources was outlined.
A strategy for tomographic image reconstruction suitable for the proposed system was developed.
Software simulations successfully demonstrated the fundamental concept of the portable CT scanner.

Conclusions:

Carbon nanotube-based X-ray sources offer a pathway to developing compact, low-power, and portable CT scanners.
The proposed design and simulation results indicate the potential for on-site tomographic imaging in diverse environments.
Further research and development are necessary to address technical challenges and realize the practical implementation of this technology.