Home Imaging of Suspected Intracranial Hypotension
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Headache, orthostatic, intracranial hypotension suspected, no recent spinal intervention that could cause CSF leakage, initial imaging 3197429
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
May be appropriate
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Headache, orthostatic, within 72 hrs of spinal intervention that could cause CSF leakage, initial imaging 3197432
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Headache, orthostatic, intracranial hypotension suspected, within 72 hrs of dural puncture that could cause CSF leakage, initial imaging 3197431
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Headache, orthostatic, intracranial hypotension suspected, no improvement post 72 hrs of dural puncture that could cause CSF leakage, initial imaging 3197434
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Headache, orthostatic, intracranial hypotension suspected, no improvement post 72 hrs of spinal intervention that could cause CSF leakage, initial imaging 3197435
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Obtundation, intracranial hypotension suspected on initial brain imaging, next imaging study 3197437
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
May be appropriate
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Headache, chronic, daily, intracranial hypotension suspected, initial imaging negative, hx and clinical exam suggesting CSF leakage, next imaging study 3197439
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
May be appropriate
DTPA cisternography
1-10 mSv
☢☢☢

May be appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Headache, rebound, post fibrin glue patch treatment, intracranial hypotension suspected, initial imaging 3197442
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate
Headache, rebound, post epidural blood patch treatment, intracranial hypotension suspected, initial imaging 3197441
Radiographic myelography digital subtraction complete spine
10-30 mSv
☢☢☢☢

Usually not appropriate
MR myelography complete spine
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI complete spine without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI head without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT head cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT head with IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
CT head without and with IV contrast
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT head without IV contrast
1-10 mSv
☢☢☢
0.3-3 mSv [ped]
☢☢☢
Usually not appropriate
DTPA cisternography
1-10 mSv
☢☢☢

Usually not appropriate
CT complete spine with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without and with IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT complete spine without IV contrast
10-30 mSv
☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography complete spine
30-100 mSv
☢☢☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
CT myelography dynamic complete spine
30-100 mSv
☢☢☢☢☢

Usually not appropriate