MRI (magnetic resonance imaging)

Question 1

Ved T1 vægt vil vand være…

T1: Kort TE (ekkotid) og kort TR (repetionstid)

huskeregel:
T1 er fedt, T2 er vand (H2O)

Answer 1

Sort - hypointense

Question 2

Ved T2 vægt vil vand være…

T2: Lang TE (ekkotid) og lang TR (repetionstid)

huskeregel:
T1 er fedt, T2 er vand (H2O)

Answer 2

Hvidt - hyperintense

Question 3

Nævn tre basic MRI scans:

Answer 3

T1 weighted MRI
T2 weighted MRI
STIR and FLAIR sequence MRI

Question 4

Anatomisk MRI er

Answer 4

T1 vægtet

T1 is best for looking at brain structure because fat appears very bright and bone marrow contains a great deal of fat.

Question 5

Funktionel MRI er

Answer 5

T2 vægtet

Water and fluid are brighter on T2- ideal for tissue oedema.

Question 6

Hvad er STIR

Answer 6

Short T1 Inversion Recovery
STIR is a fat suppression technique.
God til at se ødemer…

Question 7

Hvad er FLAIR

Answer 7

Fluid Attenuation Inversion Recovery
FLAIR is a technique to suppress water. FLAIR is good for imaging cerebral oedema and periventricular or cortical lesions in conditions such as multiple sclerosis. Hjerne.

Question 8

Kontraststof i MRI?

Answer 8

Gadolinium

Question 9

Er MRI farligt for patienten?

Answer 9

Niksen kun hvis den har ædt noget metal.