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Related Concept Videos

Computed Tomography01:10

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...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...

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Simulation tools for two-dimensional experiments in x-ray computed tomography using the FORBILD head phantom.

Zhicong Yu1, Frédéric Noo, Frank Dennerlein

  • 1Department of Radiology, University of Utah, Salt Lake City, UT, USA. zyu@ucair.med.utah.edu

Physics in Medicine and Biology
|June 21, 2012
PubMed
Summary
This summary is machine-generated.

This study provides accessible simulation tools for the FORBILD head phantom, a more complex standard for x-ray computed tomography (CT) image reconstruction, facilitating its wider adoption in research.

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Area of Science:

  • Medical Imaging
  • Computational Science

Background:

  • Mathematical phantoms are crucial for developing and evaluating x-ray computed tomography (CT) image reconstruction algorithms.
  • The FORBILD head phantom is a widely accepted gold standard, but its complexity limits its use compared to the simpler Shepp-Logan phantom.
  • Existing simulation software for the Shepp-Logan phantom is not easily adaptable to the more complex FORBILD phantom.

Purpose of the Study:

  • To offer computer simulation tools for a 2D FORBILD head phantom.
  • To bridge the gap between the widely used Shepp-Logan phantom and the more complex FORBILD phantom.
  • To facilitate the use of the FORBILD phantom in 2D image reconstruction research.

Main Methods:

  • Development of simulation tools for a 2D phantom modeling the central axial slice of the FORBILD head phantom.
  • Ensuring compatibility with widely used software platforms like Matlab®, FreeMat, and Octave.
  • Providing easily accessible code for direct implementation by researchers.

Main Results:

  • Introduction of user-friendly simulation tools for the 2D FORBILD head phantom.
  • Demonstration of the tools' applicability in Matlab® and its open-source variants.
  • Simplified implementation of FORBILD phantom simulations for researchers.

Conclusions:

  • The developed tools address the complexity barrier associated with the FORBILD head phantom.
  • These tools promote broader utilization of the FORBILD phantom in 2D CT image reconstruction research.
  • Facilitates advanced algorithm development and evaluation using a robust, standardized phantom.