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Improved Delineation of Ventricular Shunt Catheters Using Fast Steady-State Gradient Recalled-Echo Sequences in a Rapid Brain MR Imaging Protocol in Nonsedated Pediatric Patients

Improved Delineation of Ventricular Shunt Catheters Using Fast Steady-State Gradient... This Article Figures Only Full Text Full Text (PDF) All Versions of this Article: ajnr.A1866v1 31/3/430 most recent Alert me when this article is cited Alert me if a correction is posted Citation Map Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Google Scholar Articles by Miller, J.H. Articles by Curran, J.G. PubMed PubMed Citation Articles by Miller, J.H. Articles by Curran, J.G. Hotlight (NEW!) What's Hotlight? American Journal of Neuroradiology 31:430-435, March 2010 © 2010 American Society of Neuroradiology PEDIATRICS Improved Delineation of Ventricular Shunt Catheters Using Fast Steady-State Gradient Recalled-Echo Sequences in a Rapid Brain MR Imaging Protocol in Nonsedated Pediatric Patients J.H. Miller a , T. Walkiewicz a , R.B. Towbin a and J.G. Curran a a From the Department of Radiology, Neuroradiology Section, Phoenix Children's Hospital, Phoenix, Arizona. Please address correspondence to Jeffrey H. Miller, MD, Department of Radiology, Phoenix Children's Hospital, Phoenix, AZ 85016; email: jhmiller@phoenixchildrens.com BACKGROUND AND PURPOSE: Rapid brain MR imaging is often substituted for head CT in multiply imaged patients with shunted hydrocephalus. Fast TSE-T2 sequences are commonly used in these protocols. One limitation of TSE-T2 sequences is the decreased catheter delineation compared with CT. The aim of this study was to compare fast TSE-T2 with rapid SS-GRE sequences in the evaluation of intracranial shunt catheter delineation as part of a rapid nonsedated pediatric brain MR imaging protocol. MATERIALS AND METHODS: We evaluated the findings from 179 consecutive patients who underwent routine clinical imaging according to the rapid nonsedated pediatric brain MR imaging protocol. Comparison of the quality of intracranial shunt catheter localization on SS-GRE versus TSE-T2 was performed. RESULTS: Of the total of 179 rapid nonsedated pediatric brain MR images that were reviewed, 62 (35%) had an intracranial shunt catheter. The shunt catheter tip was better localized on the SS-GRE than on the TSE-T2 images in 49/62 (79%) of these patients. Of the remaining 13/62 (21%), the TSE-T2 was either better or equivalent in localizing the shunt catheter tip. CONCLUSIONS: Our study shows that rapid SS-GRE sequences can provide better delineation of standard intracranial shunt catheters than standard rapid MR imaging protocols containing only fast TSE-T2 sequences. Abbreviations: FA, flip angle • FID, free induction decay • FSE, fast spin-echo • GRE, gradient recalled-echo • RIS, Radiology Information System • SS-GRE, steady-state gradient recalled-echo • TSE-T2, T2 turbo spin-echo Home Subscribe Author Instructions Submit Online Search the AJNR Archives Feedback Help Copyright © 2010 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Neuroradiology American Journal of Neuroradiology

Improved Delineation of Ventricular Shunt Catheters Using Fast Steady-State Gradient Recalled-Echo Sequences in a Rapid Brain MR Imaging Protocol in Nonsedated Pediatric Patients

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References (22)

Publisher
American Journal of Neuroradiology
Copyright
Copyright © 2010 by the American Society of Neuroradiology.
ISSN
0195-6108
eISSN
1936-959X
DOI
10.3174/ajnr.A1866
Publisher site
See Article on Publisher Site

Abstract

This Article Figures Only Full Text Full Text (PDF) All Versions of this Article: ajnr.A1866v1 31/3/430 most recent Alert me when this article is cited Alert me if a correction is posted Citation Map Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Google Scholar Articles by Miller, J.H. Articles by Curran, J.G. PubMed PubMed Citation Articles by Miller, J.H. Articles by Curran, J.G. Hotlight (NEW!) What's Hotlight? American Journal of Neuroradiology 31:430-435, March 2010 © 2010 American Society of Neuroradiology PEDIATRICS Improved Delineation of Ventricular Shunt Catheters Using Fast Steady-State Gradient Recalled-Echo Sequences in a Rapid Brain MR Imaging Protocol in Nonsedated Pediatric Patients J.H. Miller a , T. Walkiewicz a , R.B. Towbin a and J.G. Curran a a From the Department of Radiology, Neuroradiology Section, Phoenix Children's Hospital, Phoenix, Arizona. Please address correspondence to Jeffrey H. Miller, MD, Department of Radiology, Phoenix Children's Hospital, Phoenix, AZ 85016; email: jhmiller@phoenixchildrens.com BACKGROUND AND PURPOSE: Rapid brain MR imaging is often substituted for head CT in multiply imaged patients with shunted hydrocephalus. Fast TSE-T2 sequences are commonly used in these protocols. One limitation of TSE-T2 sequences is the decreased catheter delineation compared with CT. The aim of this study was to compare fast TSE-T2 with rapid SS-GRE sequences in the evaluation of intracranial shunt catheter delineation as part of a rapid nonsedated pediatric brain MR imaging protocol. MATERIALS AND METHODS: We evaluated the findings from 179 consecutive patients who underwent routine clinical imaging according to the rapid nonsedated pediatric brain MR imaging protocol. Comparison of the quality of intracranial shunt catheter localization on SS-GRE versus TSE-T2 was performed. RESULTS: Of the total of 179 rapid nonsedated pediatric brain MR images that were reviewed, 62 (35%) had an intracranial shunt catheter. The shunt catheter tip was better localized on the SS-GRE than on the TSE-T2 images in 49/62 (79%) of these patients. Of the remaining 13/62 (21%), the TSE-T2 was either better or equivalent in localizing the shunt catheter tip. CONCLUSIONS: Our study shows that rapid SS-GRE sequences can provide better delineation of standard intracranial shunt catheters than standard rapid MR imaging protocols containing only fast TSE-T2 sequences. Abbreviations: FA, flip angle • FID, free induction decay • FSE, fast spin-echo • GRE, gradient recalled-echo • RIS, Radiology Information System • SS-GRE, steady-state gradient recalled-echo • TSE-T2, T2 turbo spin-echo Home Subscribe Author Instructions Submit Online Search the AJNR Archives Feedback Help Copyright © 2010 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X

Journal

American Journal of Neuroradiology – American Journal of Neuroradiology

Published: Mar 1, 2010

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