mrimaster

Forearm MRI : Protocol and Planning

Indications for forearm MRI scan

Contraindications

Patient preparation for forearm MRI scan

Positioning for forearm MRI scan

forearm mri positioning

Recommended Forearm MRI Protocols and Planning

forearm MRI 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-weighted low-resolution scans can be used for this purpose. Continue taking additional localizers until a true coronal, axial, and sagittal view of the forearm is obtained.

T2 stir axial 4 mm SFOV

Plan the axial slices on the coronal plane and angle the positioning block perpendicular to the radius and ulna. Check the positioning block in the other two planes. An appropriate angle must be used in the sagittal plane (perpendicular to the radius and ulna). Slices must be sufficient to cover the whole forearm from the wrist joint to the elbow joint.

mri forearm protocol and planning of axial scans

Parameters

TR

4000-5000

TE

110

FLIP

150

NEX

2

SLICE

4 MM

MATRIX

256X256

FOV

150-200

PHASE

A>P

GAP

10%

TI

150

T1 tse axial 4 mm SFOV

Plan the axial slices on the coronal plane and angle the positioning block perpendicular to the radius and ulna. Check the positioning block in the other two planes. An appropriate angle must be used in the sagittal plane (perpendicular to the radius and ulna). Slices must be sufficient to cover the whole forearm from the wrist joint to the elbow joint.

mri forearm protocol and planning of axial scans

Parameters

TR

400-600

TE

15-25

SLICE

4 MM

FLIP

150

PHASE

A>P

MATRIX

320X320

FOV

150-200

GAP

10%

NEX(AVRAGE)

2

T2 stir coronal 3mm

Plan the coronal slices on the axial plane and angle the positioning block parallel to the radius and ulna. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (parallel to the radius and ulna). Slices must be sufficient to cover the whole forearm from anterior to posterior. Adding a saturation band over the chest and abdominal area will reduce wrap-around and breathing artifacts.

mri forearm protocol and planning of coronal scans

Parameters

TR

4000-5000

TE

110

FLIP

150

NEX

2

SLICE

3 MM

MATRIX

384X320

FOV

350-400

PHASE

R>L

GAP

10%

TI

150

T1 tse coronal 3mm

Plan the coronal slices on the axial plane and angle the positioning block parallel to the radius and ulna. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (parallel to the radius and ulna). Slices must be sufficient to cover the whole forearm from anterior to posterior. Adding a saturation band over the chest and abdominal area will reduce wrap-around and breathing artifacts.

mri forearm protocol and planning of coronal scans

Parameters

TR

400-600

TE

15-25

SLICE

3 MM

FLIP

150

PHASE

H>F

MATRIX

384X384

FOV

350-400

GAP

10%

NXA(AVRAGE)

2

T2 tse sagittal 3mm

Plan the sagittal slices on the axial plane; angle the positioning block perpendicular to the medial and lateral epicondyles of the humerus. Check the positioning block in the other two planes. An appropriate angle must be used in the coronal plane (parallel to the ulna). Slices must be sufficient to cover the whole forearm from medial to lateral.

mri forearm protocol and planning of sagittal scans

Parameters

TR

3000-4000

TE

100-120

SLICE

3 MM

FLIP

130-150

PHASE

A>P

MATRIX

384X384

FOV

350-400

GAP

10%

NEX(AVRAGE)

2