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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 I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
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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Related Experiment Video

Updated: May 26, 2026

Longitudinal Micro-Computed Tomography Image Analysis for User-Defined Region of Interest in Critical-Sized Bone Defects
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Slice-thickness evaluation in CT and MRI: an alternative computerised procedure.

G Acri1, M G Tripepi, F Causa

  • 1Environmental, Health, Social and Industrial Department, University of Messina, Policlinico Universitario - Torre Biologica, Viale Gazzi, 98125, Messina, Italy. gacri@unime.it

La Radiologia Medica
|January 10, 2012
PubMed
Summary

A new phantom and LabView procedure accurately measure slice thickness (ST) in real-time for CT and MRI quality control. This validated method offers a reliable alternative to existing techniques.

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Area of Science:

  • Medical Imaging Physics
  • Quality Control in Radiology

Background:

  • Accurate quality control (QC) is essential for efficient computed tomography (CT) and magnetic resonance imaging (MRI) equipment use.
  • Slice thickness (ST) accuracy verification typically requires specialized phantoms and image analysis.

Purpose of the Study:

  • To develop a novel phantom and a computerised LabView-based procedure for real-time determination of full width at half maximum (FWHM) of slice thickness.
  • To simplify and enhance the accuracy of ST QC procedures in CT and MRI.

Main Methods:

  • A novel phantom constructed from polymethyl methacrylate (PMMA) with a dividing septum was imaged.
  • A LabView-based procedure was used to process phantom images for ST analysis.
  • Results were validated against commercial software using the Fisher exact test (F test).

Main Results:

  • The LabView (LV) procedure determined FWHM for ST with high accuracy.
  • Comparison with commercial software showed no statistically significant variation.
  • The methodology was validated using the Fisher exact test.

Conclusions:

  • The developed LabView procedure provides a reliable and accurate method for ST QC.
  • This novel approach serves as a valuable alternative to conventional ST measurement techniques.
  • The procedure is suitable for application on any CT and MRI scanner.