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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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Related Experiment Video

Updated: May 21, 2026

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

Normal pediatric prevertebral soft-tissue thickness on MDCT.

David Vermess1, Carlos A Rojas, Fawad Shaheen

  • 1Department of Radiology, University of South Florida College of Medicine, 12901 Bruce B. Downs Blvd, Box 17, Tampa, FL 33612, USA. dvermess@gmail.com

AJR. American Journal of Roentgenology
|June 27, 2012
PubMed
Summary

This study establishes normal prevertebral soft tissue (PVST) thickness on MDCT scans for children aged 0-15. These age-dependent values aid in detecting pediatric cervical spine injuries.

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Last Updated: May 21, 2026

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Area of Science:

  • Pediatric Radiology
  • Medical Imaging
  • Orthopedic Surgery

Background:

  • Prevertebral soft tissue (PVST) thickness is crucial for identifying cervical spine injuries in children.
  • Current normal PVST values are based on radiographs, lacking MDCT-specific age-dependent data.
  • Multidetector CT (MDCT) is increasingly used for pediatric trauma evaluation.

Purpose of the Study:

  • To establish age-dependent normal values for PVST thickness using MDCT in pediatric patients.
  • To provide reference data for interpreting MDCT scans in pediatric trauma cases.
  • To enhance the diagnostic accuracy of cervical spine injury detection in children.

Main Methods:

  • PVST thickness was measured on MDCT scans of 139 pediatric trauma patients (0-15 years).
  • Patients without cervical spine or soft-tissue injury, or other confounding conditions, were included.
  • Measurements were taken with the cervical spine in a neutral or near-neutral position.

Main Results:

  • Normal upper limits for PVST thickness varied by age and cervical level (C2 and C6 showed least variability).
  • Specific upper limits at C2 ranged from 6.8 mm to 8.4 mm across age groups.
  • Specific upper limits at C6 ranged from 9.0 mm to 14.5 mm across age groups.

Conclusions:

  • MDCT is vital for evaluating pediatric trauma patients.
  • The established MDCT-based PVST thickness values serve as upper limits of normal for children aged 0-15.
  • These findings will improve the detection of cervical spine injuries in pediatric patients.