Used for general examination of the brain with no specific neurological symptoms. The technique should be modified with additional views or more topical slices if an unexpected lesion is discovered.
- SCOUT 3 plane GRE localisers
- PD + T2 AXIAL Turbo spin echo (TSE) axials. 5 mm thick with 50% gap
- FLAIR AXIAL 5 mm slices 0.9 mm resolution FOV 230 mm
- FLAIR/T2 CORONAL 5 mm thick with 50% gap
- T1 SAGIAL- age below 12
- T2 SAGITAL-age above 12
- Axial pre-contrast T1 spin echo (SE)
POST CONTRAST
Axial post-contrast T1 spin echo (SE)
Coronal post-contrast T1 spin echo (SE)
Optional Sequences
MP-RAGE isotropic T1-3D
Its a 3D t1 sequence allowing reformatting in other imaging planes. Good differenciation in grey and white mater.Less enhancement compare to T1 SE or TSE.
Axial DW:
Particularly useful to determine if there is acute or subacute infarct. Its sensitivity is quite high, while the specificity is limited and requires clinical correlation.
CEREBELLO-PONTINE ANGLE (CPA) MRI PROTOCOL
Acute Stroke MRI Protoco
Coronal post-contrast T1 spin echo (SE)
Optional Sequences
T1 Coronal low-susceptibilty
MP-RAGE isotropic T1-3D
GRADIENT AXIAL
DIFFUSION
Axial T2 spin echo (SE)
Axial T2 SE is considered a gold standard to assess the brain anatomy, as well as paranasal sinuses and temporal bone aeration.
Sagittal T1 Spin echo (SE):
Useful for detailed assessment of the midline structures including corpus callosum, sella and suprasellar structures, clivus, craniocervical junction, as well as the bone marrow.
Axial Flair
Flair is a good supplement to T2 to assess the white matter conditions and generally more sensitive than T2. Flair is also quite sensitive to determine if there is subarachnoid hemorrhage. Its more sensitive for the lesions especially in white matter and less sensitive in posterior fossa.
PD AXIAL
Can be used as an alternative for FLAIR,and is more sensitive for detecting posterior fossa lesions.
Coronal Flair
Coronal Flair is a good supplement to axial flair, to confirm the signal abnormalities seen on axial scans, as well as for further assessment of the temporal lobes.Its a 3D t1 sequence allowing reformatting in other imaging planes. Good differenciation in grey and white mater.Less enhancement compare to T1 SE or TSE.
Axial DW:
Particularly useful to determine if there is acute or subacute infarct. Its sensitivity is quite high, while the specificity is limited and requires clinical correlation.
Axial EP
Predominantly useful to determine if the hyperintensity on DF scan is due to infact or artifactual ("T2 shine-through phenomenon".
Axial pre-contrast T1 spin echo (SE)
Main purpose of this sequence is to establish a baseline for the post contrast scan. Also, T1 spin echo can be useful to assess intracranial hemorrhage as well as fat containing lesions.
Axial post-contrast T1 spin echo (SE)
Axial post-contrast scanning is a gold standard to rule out enhancing intracranial lesions and also to assess the enhancement pattern of a known lesion.
Coronal post-contrast T1 spin echo (SE)
Good supplement to axial post-contrast scan.
READ MORE ABOUT:
Pituitary MRI Protocol
CEREBELLO-PONTINE ANGLE (CPA) MRI PROTOCOL
Acute Stroke MRI Protoco
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