mrimaster

MRI Upper Arm (Humerus): Protocol and Planning

Indications for MRI Upper Arm (Humerus)

Contraindications

Patient preparation for MRI Upper Arm (Humerus)

Positioning for MRI Upper Arm (Humerus)

mri upper arm (humerus)positioning

Recommended MRI Upper Arm (Humerus) Protocols and Planning

localiser

A three-plane localizer must be taken at the beginning to localize and plan the sequences. Localizers are usually less than 25 seconds. T1\T2-weighted low-resolution scans can be used for this purpose. Continue taking additional localizers until a true coronal, axial, and sagittal view of the upper arm is obtained.

T2 stir axial 3mm SFOV

Plan the axial slices on the coronal plane and angle the planning block perpendicular to the humerus. Check the planning block in the other two planes. An appropriate angle must be used in the sagittal plane (perpendicular to the humerus). Slices must be sufficient to cover the whole upper arm from the acromioclavicular joint to the elbow joint. Adding saturation bands over the chest will help reduce breathing artifacts. The phase direction must be anteroposterior to avoid wrap-around and motion artifacts from the chest.

mri upper arm (humerus) axial image planning

Parameters

TR

4000-6000

TE

110

FLIP

160

NEX

2

SLICE

6 MM

MATRIX

256X256

FOV

170-200

PHASE

A>P

GAP

10%

TI

150

T1 tse axial 3mm SFOV

Plan the axial slices on the coronal plane and angle the planning block perpendicular to the humerus. Check the planning block in the other two planes. An appropriate angle must be used in the sagittal plane (perpendicular to the humerus). Slices must be sufficient to cover the whole upper arm from the acromioclavicular joint to the elbow joint. Adding saturation bands over the chest will help reduce breathing artifacts. The phase direction must be anteroposterior to avoid wrap-around and motion artifacts from the chest.

mri upper arm (humerus) axial image planning

Parameters

TR

400-600

TE

15-25

SLICE

6 MM

FLIP

160

PHASE

A>P

MATRIX

320X320

FOV

170-200

GAP

10%

NEX(AVRAGE)

2

T1 tse coronal 3mm

Plan the coronal slices on the axial plane and angle the planning block parallel to the scapular blade. Check the planning block in the other two planes. An appropriate angle must be used in the sagittal plane (parallel to the humerus). Slices must be sufficient to cover the whole upper arm from anterior to posterior. The field of view (FOV) must be big enough to cover both the shoulder and elbow joints. Adding saturation bands over the chest will reduce breathing and arterial pulsation artifacts. For the phase direction, you can choose either right to left or head to feet, and a minimum 100% oversampling is recommended to avoid wrap-around artifacts.

mri upper arm (humerus) coronal image planning

Parameters

TR

400-600

TE

15-25

SLICE

5 MM

FLIP

150

PHASE

R>L

MATRIX

448X384

FOV

350-400

GAP

10%

NEX(AVRAGE)

2

T2 stir coronal 3mm

Plan the coronal slices on the axial plane and angle the planning block parallel to the scapular blade. Check the planning block in the other two planes. An appropriate angle must be used in the sagittal plane (parallel to the humerus). Slices must be sufficient to cover the whole upper arm from anterior to posterior. The field of view (FOV) must be big enough to cover both the shoulder and elbow joints. Adding saturation bands over the chest will reduce breathing and arterial pulsation artifacts. For the phase direction, you can choose either right to left or head to feet, and a minimum 100% oversampling is recommended to avoid wrap-around artifacts.

mri upper arm (humerus) coronal image planning

Parameters

TR

3000-4000

TE

110

FLIP

150

NEX

2

SLICE

5 MM

MATRIX

384X320

FOV

350-400

PHASE

R>L

GAP

10%

TI

150

T2 tse sagittal 3mm

Plan the sagittal slices on the axial plane and angle the planning block perpendicular to the scapular blade. Check the planning block in the other two planes. Use an appropriate angle in the coronal plane (parallel to the humerus). The slices must sufficiently cover the entire upper arm from the medial to lateral aspect. The field of view (FOV) should be large enough to encompass both the shoulder and elbow joints. To reduce artifacts from breathing and arterial pulsations, consider adding saturation bands over the chest. For the phase direction, you can choose either anterior to posterior or head to feet. A minimum oversampling of 100% is recommended to avoid wrap-around artifacts.

Parameters

TR

4000-5000

TE

110

FLIP

130

NEX

2

SLICE

5MM

MATRIX

384X384

FOV

350-400

PHASE

A>P

GAP

10%

FATSAT

Off