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Diagnosis of foreign body aspiration with ultralow-dose CT using a tin filter : a comparison study

Gordon, Lena ; Nowik, Patrik ; Mobini Kesheh, Shahla ; Lidegran, Marika and Diaz, Sandra LU (2020) In Emergency Radiology
Abstract

Purpose: Suspected airway foreign body aspiration (FBA) is a common event in paediatric emergency units, especially in children under 3 years of age. It can be a life-threatening event if not diagnosed promptly and accurately. The purpose of this study is to compare the diagnostic performance of an ultralow-dose CT (DLP of around 1 mGycm) with that of conventional radiographic methods (fluoroscopy and chest radiography of the airways) in the diagnosis of FBA children’s airways. Methods: Retrospective cross-sectional study. Data from 136 children were collected: 75 were examined with conventional radiographic methods and 61 with ultralow-dose CT. Effective doses were compared using independent t tests. The results of bronchoscopy, if... (More)

Purpose: Suspected airway foreign body aspiration (FBA) is a common event in paediatric emergency units, especially in children under 3 years of age. It can be a life-threatening event if not diagnosed promptly and accurately. The purpose of this study is to compare the diagnostic performance of an ultralow-dose CT (DLP of around 1 mGycm) with that of conventional radiographic methods (fluoroscopy and chest radiography of the airways) in the diagnosis of FBA children’s airways. Methods: Retrospective cross-sectional study. Data from 136 children were collected: 75 were examined with conventional radiographic methods and 61 with ultralow-dose CT. Effective doses were compared using independent t tests. The results of bronchoscopy, if performed, were used in creating contingency 2 × 2 tables to assess the diagnostic performance between modalities. An extra triple reading of all images was applied for this purpose. Results: The effective doses used in the ultralow-dose CT examinations were lower compared with those in conventional methods (p < 0.001). The median dose for CT was 0.04 mSv compared with 0.1 mSv for conventional methods. Sensitivity and specificity were higher for ultralow-dose CT than those for conventional methods (100% and 98% versus 33% and 96%) as were the positive and negative predicted values (90% and 100% versus 60% and 91%). Conclusion: Ultralow-dose CT can be used as the imaging of choice in the diagnosis of airway FBA in emergency settings, thereby avoiding concerns about radiation doses and negative bronchoscopy outcomes.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bronchoscopy, Chest radiography, Fluoroscopy, Foreign body aspiration, Ultralow-dose CT
in
Emergency Radiology
publisher
Springer
external identifiers
  • pmid:32152760
  • scopus:85081279860
ISSN
1070-3004
DOI
10.1007/s10140-020-01764-7
language
English
LU publication?
no
id
57d164f0-361c-423a-8d47-f3c47db7e35e
date added to LUP
2020-04-15 14:55:01
date last changed
2021-01-06 08:25:22
@article{57d164f0-361c-423a-8d47-f3c47db7e35e,
  abstract     = {<p>Purpose: Suspected airway foreign body aspiration (FBA) is a common event in paediatric emergency units, especially in children under 3 years of age. It can be a life-threatening event if not diagnosed promptly and accurately. The purpose of this study is to compare the diagnostic performance of an ultralow-dose CT (DLP of around 1 mGycm) with that of conventional radiographic methods (fluoroscopy and chest radiography of the airways) in the diagnosis of FBA children’s airways. Methods: Retrospective cross-sectional study. Data from 136 children were collected: 75 were examined with conventional radiographic methods and 61 with ultralow-dose CT. Effective doses were compared using independent t tests. The results of bronchoscopy, if performed, were used in creating contingency 2 × 2 tables to assess the diagnostic performance between modalities. An extra triple reading of all images was applied for this purpose. Results: The effective doses used in the ultralow-dose CT examinations were lower compared with those in conventional methods (p &lt; 0.001). The median dose for CT was 0.04 mSv compared with 0.1 mSv for conventional methods. Sensitivity and specificity were higher for ultralow-dose CT than those for conventional methods (100% and 98% versus 33% and 96%) as were the positive and negative predicted values (90% and 100% versus 60% and 91%). Conclusion: Ultralow-dose CT can be used as the imaging of choice in the diagnosis of airway FBA in emergency settings, thereby avoiding concerns about radiation doses and negative bronchoscopy outcomes.</p>},
  author       = {Gordon, Lena and Nowik, Patrik and Mobini Kesheh, Shahla and Lidegran, Marika and Diaz, Sandra},
  issn         = {1070-3004},
  language     = {eng},
  month        = {03},
  publisher    = {Springer},
  series       = {Emergency Radiology},
  title        = {Diagnosis of foreign body aspiration with ultralow-dose CT using a tin filter : a comparison study},
  url          = {http://dx.doi.org/10.1007/s10140-020-01764-7},
  doi          = {10.1007/s10140-020-01764-7},
  year         = {2020},
}