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J Magn Reson Imaging. 2008 Jul;28(1):121-7. doi: 10.1002/jmri.21402.

Pelvic imaging using a T1W fat-suppressed three-dimensional dual echo Dixon technique at 3T.

Author information

1
Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT 06520, USA. daniel.cornfeld@yale.edu

Abstract

PURPOSE:

To compare two T1-weighted (T1W) fat-suppressed sequences for 3D breath-hold pre- and postcontrast fat-suppressed T1W imaging of the female pelvis at 3T.

MATERIALS AND METHODS:

Pelvic MRI scans of 16 female patients were retrospectively identified who were scanned with two 3D breath-hold sequences: 1) a fast spoiled gradient echo sequence with spectral inversion at lipids (SPECIAL) (called 3D FSPGR), and 2) a dual-echo two-point Dixon (DE Dixon) sequence. Contrast between soft tissue and fat, soft tissue and fluid, and fat and fluid was measured on pre- and postcontrast images. Additionally, two readers subjectively scored the images for degree and homogeneity of fat suppression plus presence and severity of artifacts.

RESULTS:

Contrast between muscle and myometrium to fat was improved with the Dixon technique (0.61 vs. 0.09 and 0.7 vs. 0.3, respectively, P < 0.001). Both readers agreed that fat suppression was stronger with the Dixon sequence (P < 0.001 and P = 0.06). Artifacts were equivalent (P = 0.53 and 0.65).

CONCLUSION:

The 3D DE Dixon sequence achieved stronger fat suppression in the female pelvis when compared to a 3D FSPGR sequence with SPECIAL.

PMID:
18581401
DOI:
10.1002/jmri.21402
[Indexed for MEDLINE]
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