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Home Dementia
Variants
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Cognitive impairment, parkinsonian symptoms, dementia with Lewy bodies suspected, initial imaging. 3198697
MRI head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually appropriate
CT head without IV contrast
1-10 mSv
☢☢☢ 		0.3-3 mSv [ped]
☢☢☢ 		Usually appropriate
FDG-PET/CT brain
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
SPECT or SPECT/CT brain striatal
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		Usually appropriate
MRI head without and with IV contrast
0 mSv
O 		0 mSv [ped]
O 		May be appropriate
(Disagreement)
SPECT or SPECT/CT brain perfusion
1-10 mSv
☢☢☢ 		3-10 mSv [ped]
☢☢☢☢ 		May be appropriate
MR spectroscopy head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
MRI functional (fMRI) head without IV contrast
0 mSv
O 		0 mSv [ped]
O 		Usually not appropriate
Amyloid PET/CT brain
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
Tau PET/CT brain
1-10 mSv
☢☢☢
Usually not appropriate