Indian Journal of Radiology Indian Journal of Radiology  

   Login   | Users online: 4117

Home Bookmark this page Print this page Email this page Small font sizeDefault font size Increase font size     

 

PEDIATRIC RADIOLOGY Table of Contents   
Year : 2015  |  Volume : 25  |  Issue : 4  |  Page : 353-358
Pediatric whole-body magnetic resonance imaging: Intra-individual comparison of technical quality, artifacts, and fixed structure visibility at 1.5 and 3 T


1 Department of Diagnostic Imaging, The Hospital for Sick Children and Medical Imaging Department, University of Toronto, Toronto, Ontario, Canada
2 Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada

Correspondence Address:
Govind B Chavhan
Department of Diagnostic Imaging, The Hospital for Sick Children and Medical Imaging Department, University of Toronto, 555 University Avenue, Toronto, Ontario M5G 1X8
Canada
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-3026.169448

Rights and Permissions

Purpose: To compare whole-body magnetic resonance imaging (WBMRI) performed at 1.5 and 3 T for technical quality, artifacts, and visibility of selected fixed structures. Patients and Methods: 21 children who had WBMRI at both 1.5 and 3 T scanners within a relatively short interval (3-13 months; average-8.6 months) were included. The images were objectively compared with scores from 4 to 1 for five parameters including severity of artifacts; visibility of liver, vertebral column, and marrow in legs; and overall image quality. Inter-observer agreement was calculated using Kendall's coefficient of Concordance (W) and scores were compared using Signed Rank test. Results: There was substantial inter-observer agreement for all five categories at both field strengths. The difference between averages of mean scores of all five parameters for two field strengths was statistically significant (P < 0.05), indicating less artifact, better fixed structure visibility, and overall image quality at 1.5 T as compared to 3 T. However, scores at 3 T were also rated within a good range (around 3) indicating its feasibility for WBMRI in children. Conclusion: WBMRI at 1.5 T has significantly better image quality, fixed structure visibility, and fewer artifacts, as compared to WBMRI at 3 T in children. This difference is unlikely to significantly affect detection of pathology on 3 T WBMRI as the image quality score at 3 T was also within good range.


[FULL TEXT] [PDF]*
Print this article     Email this article

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
  Citation Manager
 Access Statistics
  Reader Comments
  Email Alert *
  Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed2698    
    Printed37    
    Emailed0    
    PDF Downloaded213    
    Comments [Add]    

Recommend this journal