Age related preservation and loss in optimized brain SPECT

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dc.contributor.authorBarnden, L.
dc.contributor.authorBehin-Ain, S.
dc.contributor.authorKwiatek, R.
dc.contributor.authorCasse, R.
dc.contributor.authorYelland, L.
dc.date.issued2005
dc.descriptionCopyright © 2005 Lippincott Williams & Wilkins, Inc.
dc.description.abstract<h4>Background</h4>Recent single photon emission computed tomography (SPECT) studies have reported age related increases in regional brain perfusion (called preservation here) as well as losses.<h4>Aim</h4>To apply optimized SPECT processing to better define and understand both age related preservation and loss in brain SPECT.<h4>Methods</h4>Brain SPECT was performed on 85 healthy subjects using Tc hexamethylpropylene amine oxime (HMPAO), processed using findings from recent optimization work, and subjected to voxel based statistical analysis.<h4>Results</h4>SPECT preservation was seen in white matter. This distribution differs from other SPECT reports, but is similar to that for preservation observed with structural magnetic resonance imaging (MRI). This suggests that SPECT preservation may arise from age related changes in brain anatomy, not regional cerebral blood flow (rCBF), and we demonstrate that it can arise from the partial-volume effect in areas where white matter contracts with age. Age related losses extended over the whole pre-frontal midline area and an extended pattern of focal losses was seen in the peripheral cortex that was consistent with major sulci. There were also focal losses in the cerebellum. The most significant SPECT loss was in the anterior cingulate, although no structural changes were observed there in the MRI study. A model of sulcal widening at the junction of the inter-hemispheric fissure and cingulate sulcus, when degraded by the partial-volume effect, could explain this anterior cingulate loss.<h4>Conclusion</h4>Optimized processing has revealed spatial patterns for age related preservation and losses in brain SPECT that indicate their origin is primarily structural. Correction for structural effects in optimized SPECT is needed to confirm whether any regional ageing effects derive from changes in rCBF.
dc.description.urihttp://journals.lww.com/nuclearmedicinecomm/Abstract/2005/06000/Age_related_preservation_and_loss_in_optimized.4.aspx
dc.identifier.citationNuclear Medicine Communications, 2005; 26(6):497-503
dc.identifier.doi10.1097/00006231-200506000-00004
dc.identifier.issn0143-3636
dc.identifier.issn1473-5628
dc.identifier.orcidYelland, L. [0000-0003-3803-8728]
dc.identifier.urihttp://hdl.handle.net/2440/17509
dc.language.isoen
dc.publisherLippincott Williams & Wilkins
dc.source.urihttps://doi.org/10.1097/00006231-200506000-00004
dc.subjectBrain
dc.subjectHumans
dc.subjectTechnetium Tc 99m Exametazime
dc.subjectRadiopharmaceuticals
dc.subjectImage Interpretation, Computer-Assisted
dc.subjectTomography, Emission-Computed, Single-Photon
dc.subjectImage Enhancement
dc.subjectArtifacts
dc.subjectSensitivity and Specificity
dc.subjectReproducibility of Results
dc.subjectTissue Distribution
dc.subjectAging
dc.subjectCerebrovascular Circulation
dc.subjectAdolescent
dc.subjectAdult
dc.subjectAged
dc.subjectAged, 80 and over
dc.subjectMiddle Aged
dc.subjectChild
dc.subjectFemale
dc.subjectMale
dc.titleAge related preservation and loss in optimized brain SPECT
dc.typeJournal article
pubs.publication-statusPublished

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