Visual Rating Scale Reference Material Lorna Harper Dementia Research Centre University College London Background The reference materials included in this document were compiled and used in relation to the study: • Harper et al: MRI visual rating scales in the diagnosis of dementia: evaluation in 184 post-mortem confirmed cases. Brain. 2016 Apr; 139(4): 1211–1225. http://dx.doi.org/10.1093/brain/aww005 Please acknowledge this source when publicly presenting any work that benefited from the use of this material. Such presentations include but are not limited to papers, books, book chapters, conference posters, and talks. Slice Selection provides information on selecting the brain slice to rate. Rating Guide provides information on scoring. Orbito-FrontalRa.ngProtocol SliceSelec'on a) b) c) Corpuscallosumnotyetvisible(prera'ngslice) Corpuscallosumjustvisible(rate olfactorysulcusandcingulatesulcus onthisslice) Post-ra'ngslice CC-corpuscallosum,OS-olfactorysulcus,CS-cingulatesulcus Ra'ngGuide 0:Closedsulcus 1:Smallsulcalslit,justrevealingCSF 2:Openingofthesulcus,CSFclearlyvisible 3:Severewideningofthesulcus RostralAnteriorCingulateRa.ngProtocol SliceSelec'on a) b) c) Corpuscallosumnotyetvisible(prera'ngslice) Corpuscallosumjustvisible(rate olfactorysulcusandcingulatesulcus onthisslice) Post-ra'ngslice CC-corpuscallosum,OS-olfactorysulcus,CS-cingulatesulcus Ra'ngGuide 0:Closedsulcus 1:Sulcalopening(CSFvisible),although narrowertowardsthepeak 2:Sulcalwideningalongthelengthofthe sulcus 3:Severewideningofthesulcus AnteriorTemporalRa.ngProtocol SliceSelec'on a) b) c) Connec'onbetweenthefrontaland temporallobesiss'llvisible(prera'ngslice) Novisibleconnec'onbetweenthe frontalandtemporallobes(ratethis slice) Post-ra'ngslice Ra'ngGuide 0:Normalappearances 1:Slightprominenceofanteriortemporal sulci 2:Temporalsulcidefinitelywidened 3:Gyriseverelyatrophicandribbon-like. WMandGMcannotbedis'nguished (normaltemporallobeatthislevelis lesssubstan'althanthefrontallobe, ribbon-likegyriofstage3temporallobe aresimilartostage4frontalgyri) 4:Temporalpolehasasimplelinearprofile orisnotseenatall Fronto-InsulaRa.ngProtocol SliceSelec'on a) b) Anteriorcommissure(AC)notyet visible(pre-ra'ngslice) Anteriorcommisurejustvisible(rate thissliceandthe2posterior) CIS:Circularinsularsulcus,AC:Anteriorcommissure Ra'ngGuide (Averagethescoreoverthe3slices) 0:Closedsulcus 1:Sulcalopening,CSFclearlyvisible 2:Sulcalwideningandtheemergenceof anarrowheadshapepoin'ngtowards themidline 3:Severewideningalongthelengthofthe sulcus MedialTemporalRa.ngProtocol SliceSelec'on • • • • • • Inthemiddleofthehippocampalbody,infrontoftheponsorhalfwaythroughtheponsdependingontheangleofthescan Scrollthoughthehippocampustogetanimpressionoftheatrophythroughout Don’tratetooclosetotheamygdala.Ifthehippocampuscurlsup,thesliceistooclosetothehippocampalhead. Attheoriginofthefornix,thesliceistooclosetothetail. Ascoreof0cans'llbegivenifthereissomeopeningofthechoroidfissureonafewslicesthroughthehippocampalbodyif theremainderareclosed. Ascoreof1isgivenifthechoroidfissureisopenedovertheen'relengthofthehippocampalbody. Ra'ngGuide CF (Referencesimagesfromh@p://www.radiologyassistant.nl/en/p43dbf6d16f98d/demen.a-role-of-mri.html) CF Alsotakethesestructuresintoaccount: CF–choroidfissure TH-temporalhorn PHG-parahippocampalgyrus CoS-collateralsulcus FS-fusiformsulcus 0:Normal, 1:Widenedchoroidfissure 2:Increasedwideningofthechoroidfissure,wideningofthe temporalhorn,openingofothersulci(i.e.collateral/fusiformsulcus) 3:Pronouncedvolumelossofthehippocampus, 4:Endstageatrophy PosteriorAtrophyRa.ngProtocol 0 Ra'ngGuide 1 2 0:Closedsulciofparietallobesandcuneus 1:Mildwideningofposteriorcingulateand parieto-occipitalsulci 2:Substan'alwideningofthesulci 3:Extremewideningoftheposteriorcingulate andparieto-occipitalsulci SliceSelec'on Nosliceselec'on–justscrollthrough PAR-parietallobe PCS-posteriorcingulatesulcus POS-parieto-occipitalsulcus PRE-precuneus 3 ImagefromLehmannetal, NeurobiolAging.2012Mar;33(3):627.e1-627.e12. References Frontal Scales were adapted by Fumagalli et al from the following papers (anterior temporal scale from the same authors): • Ambikairajah A et al. A visual MRI atrophy rating scale for the amyotrophic lateral sclerosis-frontotemporal dementia continuum. Amyotroph Lateral Scler Front. Degener 2014 • Davies RR et al. Progression in frontotemporal dementia: identifying a benign behavioral variant by magnetic resonance imaging. Arch Neurol 2006; 63: 1627–1631. • Davies RR et al. Development of an MRI rating scale for multiple brain regions: comparison with volumetrics and with voxel-based morphometry. Neuroradiology 2009; 51: 491–503. • Kipps CM et al. Clinical significance of lobar atrophy in frontotemporal dementia: application of an MRI visual rating scale. Dement Geriatr Cogn Disord 2007; 23: 334–342. • Fumagalli GG et al. 9th International Conference on Frontotemporal Dementias P.252 Development of a visual rating scale for atrophy of the anterior cingulate, insula and frontal lobes. Am J Neurodegener Dis 2014; 3: 1–375. Medial Temporal Scale: • Scheltens P et al. Atrophy of medial temporal lobes on MRI in ‘probable’ Alzheimer’s disease and normal ageing: diagnostic value and neuropsychological correlates. J Neurol Neurosurg Psychiatry 1992; 55: 967–972. Posterior Scale: • • Koedam ELGE et al. Visual assessment of posterior atrophy development of a MRI rating scale. Eur Radiol 2011; 21: 2618–2625. Lehmann M et al. Posterior cerebral atrophy in the absence of medial temporal lobe atrophy in pathologicallyconfirmed Alzheimer’s disease. Neurobiol Aging 2012; 33: 627.e1–627.e12.