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3.0T TX MR neurography of lumbosacral plexus - Shandong MIRI

ExamCard
Wang, Guangbin, M.D., Ph.D. Shandong Medical Imaging Reseach Institute • China, People's Republic of
Chen, Weibo, M.D. Philips • China, People's Republic of

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ExamCard purpose

This Release 5.1.7 Achieva 3.0T TX ExamCard is created for use with diffusion weighted MR Neurography (DW-MRN) to display lumbosacral plexus.

 

DW-MRN is based on DWIBS (diffusion-weighted whole-body imaging with background body signal suppression). The major advantages of DW-MRN are high conspicuity between the nerves and surrounding structures and the 3D reformatting capability for visualization of the long trajectories of extremity nerves.

ExamCard overview

Images

Click on image to enlarge.

MR neurography lumbosacral plexus Scan time 3.59 min. <br>
TR 9200 ms<br>
TE 86 ms <br>
Voxels 2.68 x 2.68 x 3.00 mm
FOV 300 x 300 x 240 mm<br>
MR neurography lumbosacral plexus
Scan time 3.59 min.
TR 9200 ms
TE 86 ms
Voxels 2.68 x 2.68 x 3.00 mm FOV 300 x 300 x 240 mm
T1W TSE Scan time 2:02 min. <br>
TR 550 ms<br>
TE 20 ms<br>
Voxels 0.93 x 1.03 x 3.00 mm
FOV 215 x 334 x 72 mm<br>T2W TSE Scan time 2:50 min. <br>
TR shortest<br>
TE 110 ms<br>
Voxels 0.73 x 0.94 x 3.00 mm
FOV 215 x 334 x 72 mm<br>
T1W TSE
T2W TSE
Scan time 2:02 min.
TR 550 ms
TE 20 ms
Voxels 0.93 x 1.03 x 3.00 mm FOV 215 x 334 x 72 mm
Scan time 2:50 min.
TR shortest
TE 110 ms
Voxels 0.73 x 0.94 x 3.00 mm FOV 215 x 334 x 72 mm

Patient preparation

The patient is positioned head first and supine. The 16-channel SENSE XL Torso coil is used for bilateral imaging.

Postprocessing

Postprocessing of MRN data is performed using the full-volume MIP reconstruction and volume editing. Volume editing allows removal of superimposed structures with similar hyperintensity, such as veins and articular fluids, for good visualization of the nerves and lesions.

In particular, the removal of superimposed structures is performed on full-volume MIP images, which are reformatted from the entire axial source diffusion-weighted MRN images.

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Feb 12, 2015

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ExamCard
Achieva 3.0T TX
Release 5
16-channel SENSE XL Torso coil, Body, DWIBS, Lumbosacral plexus, MR neurography, Neuro, Spine
 

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