The added gradient echo pulse sequence technique: application to imaging of fluid in the temporomandibular joint

Bell, K.A., Jones, J.P., Miller, K.D. and Alrefai, D. (1993) The added gradient echo pulse sequence technique: application to imaging of fluid in the temporomandibular joint. American Journal of Neuroradiology, 14 2: 375-381.

Author Bell, K.A.
Jones, J.P.
Miller, K.D.
Alrefai, D.
Title The added gradient echo pulse sequence technique: application to imaging of fluid in the temporomandibular joint
Journal name American Journal of Neuroradiology   Check publisher's open access policy
ISSN 0195-6108
1936-959X
Publication date 1993-03
Sub-type Article (original research)
Volume 14
Issue 2
Start page 375
End page 381
Total pages 7
Place of publication Oak Brook, IL, United States
Publisher American Society of Neuroradiology
Language eng
Formatted abstract
Purpose:
To assess the value of an added gradient echo in the same pulse sequence with a T1-weighted spin echo for determining the presence of an abnormal fluid collection in the temporomandibular joint with no additional imaging time.

Materials and methods:
Using a standard T1-weighted sequence used in cine temporomandibular joint imaging, a readout gradient reversal was added and the resulting gradient echo collected. This image was compared with standard T1- and T2-weighted sequences, a short inversion recovery imaging sequence, and a small flip angle fast low-angle shot gradient-echo sequence.

Results:
The T1-weighted spin echo preceeding the added gradient echo is not affected by the gradient reversal, but the additional gradient echo adds T2* contrast information that displays fluid as bright as and compares favorably with other fluid detection sequences.

Conclusion:
The added gradient-echo technique adds sensitivity for the detection of an abnormal increase in fluid in the temporomandibular joint without adding to the overall imaging time of a routine T1-weighted sequence.
Keyword Temporomandibular joint, magnetic resonance
Magnetic resonance, technique
Internal derangements
Surface Coil
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
 
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