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3.0T Arthrography shoulder - Mayne Clinical Research Imaging Centre

ExamCard
Shnier, Ron, M.D. Symbion Research Clinical Imaging Center Australia
Hughes, Kathleen Symbion Research Clinical Imaging Center Australia

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ExamCard purpose

MR Arthrography can provide a greater sensitivity/specificity for viewing partial versus full thickness rotator cuff tears.  Arthrography is also more sensitive to certain types of labral tears such as SLAP lesions. And it is a good way to visualize if para-articular fluid collections communicate with the joint.  Imaging in three planes using fat suppression techniques is essential to reduce the likelihood that fat signal mimics contrast signal.

ExamCard overview

Shoulder Arthro SSC
Scan 1Survey sShoulder coil
Scan 2RefScan sShoulder coil
Scan 3sPDW/SPIR/AX
Scan 4sT1W/COR
Scan 5sT1W/SPIR/COR
Scan 6sT2W/SPAIR/COR
Scan 7sT1W/SPIR/SAG

ExamCard description

1. Survey SENSE Shoulder coil

The survey should have a maximum RL offset of 100 at a 400 FOV. If the shoulder is not entirely within the FOV on all three planes of the survey, then the patient should be repositioned to move the affected shoulder into the imaging plane.

 

2.  Ref Scan SENSE Shoulder coil

Reference map used for the application of the CLEAR filter and/or SENSE techniques.

 

3.  sPDW/SPIR/AX

Fat suppression is essential because fat and contrast agent may have the same signal intensity.  SENSE and AP phase encoding are used to obtain fast imaging time while maintaining high resolution. REST slabs can be positioned at an angle to cover the lung and also the subclavian vessels, to reduce artifacts from both respiration and inflowing blood.

 

4. sT1W/COR

T1W without fat saturation provides anatomical detail like cartilage thickness, supraspinatus tendon passage and bursa fullness. Angle slices parallel to the supraspinatus tendon and place the Volume shimming box over the humeral head. Place REST slabs obliquely over the lung field to reduce respiration artifacts and saturate inflowing blood signal.

 

5. sT1W/SPIR/COR

Fat suppression added to enable detailed evaluation of contrast to delineate a possible rotator cuff tear without being overshadowed by fat signal.

                     

6. sT2W/SPAIR/COR

T2/SPAIR/COR is essential for evaluation of abnormal signal in the supraspinatus tendon.

 

7. sT1W/SPIR/SAG

T1/SPAIR/SAG enables additional evaluation of rotator cuff tears and supraspinatus tendon and subdeltoid bursa in profile.

REST slab planning for axial imaging PDW SPIR AX Coronal plane planning
REST slab planning for axial imaging
PDW SPIR AX
Coronal plane planning
T1W/COR T1W/SPAIR/COR T1W/SPAIR/SAG
T1W/COR
T1W/SPAIR/COR
T1W/SPAIR/SAG


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ExamCard
Intera 3.0T
Release 10, Release 11, Release 9
Master / Quasar Dual
Musculoskeletal, Shoulder
 

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