mrimaster

Face MRI

Indications for face MRI scan

Contraindications

Patient preparation face MRI scan

Positioning for face MRI scan

MRI face positioning

Recommended Face MRI Protocols, Parameters, and Planning

localiser Face MRI

A three-plane localizer must be taken to plan the sequences. Localizers are normally less than 25 seconds and consist of T1-weighted low-resolution scans.

T2 STIR coronal 3mm SFOV

Plan the coronal slices on the sagittal plane; angle the positioning block perpendicular to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the axial plane (perpendicular to the nasal septum). Slices must be sufficient to cover the entire face from the tip of the nose up to the level of the fourth ventricle.

Planning of MRI face coronal scans

Parameters

TR

4000-5000

TE

110

FLIP

150

NEX

3

SLICE

3 MM

MATRIX

256X256

FOV

170-180

PHASE

R>L

GAP

10%

TI

150

T1 tse coronal 3mm small FOV

Plan the coronal slices on the sagittal plane; angle the positioning block perpendicular to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the axial plane (perpendicular to the nasal septum). Slices must be sufficient to cover the entire face from the tip of the nose up to the level of the fourth ventricle.

Planning of MRI face coronal scans

Parameters

TR

400-600

TE

15-25

SLICE

3 MM

FLIP

150

PHASE

R>L

MATRIX

256X256

FOV

170-180

GAP

10%

NEX(AVRAGE)

2

T1 tse axial 3mm SFOV

Plan the axial slices on the sagittal plane; angle the position block parallel to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the coronal plane (perpendicular to nasal septum). Slices must be sufficient to cover the face from the glabella down to the larynx.

planning of MRI face axial scans

Parameters

TR

400-600

TE

15-25

SLICE

3 MM

FLIP

140

PHASE

R>L

MATRIX

256X256

FOV

170-180

GAP

10%

NEX(AVRAGE)

2

 

T2 stir axial 3mm SFOV

Plan the axial slices on the sagittal plane; angle the position block parallel to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the coronal plane (perpendicular to nasal septum). Slices must be sufficient to cover the face from the glabella down to the larynx.

MRI Face planning and protocol of axial scans

Parameters

TR

4000-5000

TE

110

FLIP

130

NEX

3

SLICE

3 MM

MATRIX

256X256

FOV

170-180

PHASE

R>L

GAP

10%

TI

130

 

RESOLVE DWI axial 3mm

Plan the axial slices on the sagittal plane; angle the position block parallel to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the coronal plane (perpendicular to nasal septum). Slices must be sufficient to cover the face from the glabella down to the larynx.

MRI Face planning and protocol of axial scans

Parameters

TR

7000-9000

TE

70
115

FLIP

130

NXA

1    2

SLICE

3MM

MATRIX

192X192

FOV

200-230

PHASE

R>L

GAP

10%

B VALUE

0
1000

T2 tse sagittal 3mm SFOV

Plan the sagittal slices on the axial plane and angle the positioning block parallel to the nasal septum. Check the positioning block in the other two planes. An appropriate angle parallel to the nasal septum must be given in the coronal plane. The slices should be sufficient to cover the face from the right pinna to the left pinna.

planning of MRI face sagittal scans

Parameters

TR

3000-4000

TE

100

FLIP

130

NEX

2

SLICE

3 MM

MATRIX

256X256

FOV

170-180

PHASE

R>L

GAP

10%

oversample

40%

For post-contrast face imaging, use VIBE 3D axial sequences after the administration of IV gadolinium DTPA injection. The document below provides access to the recommended dosage of gadolinium DTPA injection as advised by the manufacturer.

T1 VIBE DIXON 3D axial .7 mm isotropic SFOV post contrast

Plan the axial slices on the sagittal plane; angle the positioning block parallel to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the coronal plane (perpendicular to the nasal septum). Slices must be sufficient to cover the face from the glabella down to the larynx. Slice and phase oversampling must be given to avoid wrap-around artifacts.

planning of MRI face axial 3D scans

TR

6.9

TE

2.39   4.77

FLIP

12

NEX

2

SLICE

.7 MM

MATRIX

256X256

FOV

170-180

PHASE

R>L

SLICES

200

OVERSAMPLE

10% and100%

Some radiologists prefer to perform TSE 2D scans. In that instance, use T1 TSE fat-sat small FOV axial and coronal scans after the administration of IV gadolinium DTPA injection (copy the planning outlined above).

Optional Scans

T2 space stir 3D axial 1mm isotropic SFOV

Plan the axial slices on the sagittal plane; angle the positioning block parallel to the hard palate. Check the positioning block in the other two planes. An appropriate angle must be given in the coronal plane (perpendicular to the nasal septum). Slices must be sufficient to cover the face from the glabella down to the larynx. Slice and phase oversampling must be given to avoid wrap-around artifacts.

planning of MRI face axial 3D scans

Parameters

TR

2000-2600

TE

200-250

FLIP

35

NEX

1.5

SLICE

1 MM

MATRIX

256X256

FOV

180-200

PHASE

R>L

GAP

10%

TI

130