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Ingenia 1.5T hip with prosthesis using MARS

ExamCard
Hopkins, Wendy, R.T. Philips Healthcare • Netherlands
Munnik-van den Brand, Annemarie Philips Healthcare • Netherlands

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ExamCard purpose

This ExamCard is designed for imaging patients with implanted hip prosthesis. The ExamCard includes Metal artifact reduction sequences (MARS). These scans are adapted to reduce metal artifacts in the images.

The ExamCard is created on Ingenia 1.5T release 4.1 using the dS Torso coil solution.

ExamCard overview

ExamCard images

Coronal T1W MARS Voxel size 0.95 x 1.26 x 2.5 mm <br>
Scan time 4.53 minCoronal STIR MARS Voxel size 1.1 x 1.37 x 3.5 mm <br>
Scan time 4.55 min
Coronal T1W MARS
Coronal STIR MARS
Voxel size 0.95 x 1.26 x 2.5 mm
Scan time 4.53 min
Voxel size 1.1 x 1.37 x 3.5 mm
Scan time 4.55 min
Coronal T1W MARS Voxel size 0.95 x 1.26 x 2.5 mm <br>
Scan time 4.53 minCoronal STIR MARS Voxel size 1.1 x 1.37 x 3.5 mm <br>
Scan time 4.55 min
Coronal T1W MARS
Coronal STIR MARS
Voxel size 0.95 x 1.26 x 2.5 mm
Scan time 4.53 min
Voxel size 1.1 x 1.37 x 3.5 mm
Scan time 4.55 min
Axial T1 MARS Voxel size 0.95 x 1.27 x 2.5 mm <br>
Scan time 2.37 minAxial STIR MARS Voxel size 1.3 x 1.55 x 3.5 mm <br>
Scan time 2.30 min
Axial T1 MARS
Axial STIR MARS
Voxel size 0.95 x 1.27 x 2.5 mm
Scan time 2.37 min
Voxel size 1.3 x 1.55 x 3.5 mm
Scan time 2.30 min

Patient preparation

The ExamCard can be used feet first or head first. Coil combination is the dS Torso coil solution consisting of the Anterior coil and the Posterior coil.

Tips and hints to reduce metal artifacts in sequences:
  • Use TSE instead of FFE (also for the survey)
  • Use Uniformity Classic
  • Use short echo spacing and high TSE factor
  • Use a small WFS of 0.5 to 0.7
  • Use thin slices
  • Maintain good SNR (give up some in-plane resolution)
  • Use STIR, no spectral fat saturation

 

If you have to use a gradient echo the principles as outlined in the previous tips still apply. 



Related reading:





Disclaimer:

Metal implants are a contraindication for MRI, unless the MR compatibility for the implant is stated by the implant manufacturer. MR healthcare professionals are advised to contact the respective implant manufacturer in order to obtain the latest safety information to ensure patient safety relative to the use of an MR procedure.



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Feb 27, 2013

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ExamCard
Ingenia 1.5T
Release 4
dS Torso coil, dStream, Hip, MARS, Musculoskeletal, prosthesis
 

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