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Home Inflammatory Ear Disease
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Otitis externa, uncomplicated, initial imaging 3198577
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 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
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Otitis externa, poorly controlled diabetes, cranial nerve deficits, initial imaging 3198581
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, immunosuppressed, headache, initial imaging 3198586
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, complicated, initial imaging 3198579
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, poorly controlled diabetes, seizures, initial imaging 3198583
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, poorly controlled diabetes, headache, initial imaging 3198587
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, immunosuppressed, seizures, initial imaging 3198580
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, immunosuppressed, neuro symptoms, initial imaging 3198585
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, immunosuppressed, cranial nerve deficits, initial imaging 3198584
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Otitis externa, poorly controlled diabetes, neuro symptoms, initial imaging 3198582
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
CT head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT head and neck without IV contrast
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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Otitis media, acute, uncomplicated, initial imaging 3198589
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 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
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Otitis media, treatment failure, persistent infection, initial imaging 3198592
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, headache, initial imaging 3198597
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, meningismus, initial imaging 3198599
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, new symptoms, initial imaging 3198594
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, mastoid tenderness, initial imaging 3198596
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, seizures, initial imaging 3198601
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, vertigo, initial imaging 3198598
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, neck rigidity, initial imaging 3198600
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, complicated, initial imaging 3198591
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, symptoms worsen, initial imaging 3198593
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, posterior auricular swelling, initial imaging 3198595
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Otitis media, neuro symptoms, initial imaging 3198602
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually appropriate
CTV head with IV contrast
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRV head with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
MRV head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
May be appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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
MRV head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		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
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CTV head and neck with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
WBC scan with SPECT or SPECT/CT skull base
1-10 mSv
☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Otitis media, chronic, initial imaging 3198604
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
Usually appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 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
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Cholesteatoma, postoperative, surveillance 3198606
MRI head and internal auditory canal without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT temporal bone without IV contrast
1-10 mSv
☢☢☢
Usually appropriate
Radiography skull
<0.1 mSv
☢ 		0.03-0.3 mSv [ped]
☢☢ 		Usually not appropriate
MRI head and internal auditory canal with IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI head and internal auditory canal 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 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
CT temporal bone with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
CT temporal bone without and with IV contrast
1-10 mSv
☢☢☢
Usually not appropriate
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