Ic‐p‐184: Pathologic Validation of the Eadc‐adni Harmonized Hippocampal Protocol

Apostolova, Liana G.; Zarow, Chris; Biado, Kristina; Hurtz, Sona; Boccardi, Marina; Somme, Johanne; Honarpisheh, Hedieh; Blanken, Anna E.; Brook, Jenny; Ng, Denise; Alger, J. R.; Vinters, Harry V.; Bocchetta, Martina; Duvernoy, Henri M.; Jack, Clifford R.; Frisoni, Giovanni B.

doi:10.1016/j.jalz.2014.05.191

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“…This consensual definition of the EADC-ADNI HarP for Manual Hippocampal Segmentation has subsequently been validated versus existing protocols [13] and pathology [14]. Benchmark images of hippocampi segmented according to the HarP have been produced to serve as reference for the qualification of naïve tracers [15] and automated segmentation algorithms [16].…”

Section: Introductionmentioning

confidence: 99%

Delphi definition of the EADC‐ADNI Harmonized Protocol for hippocampal segmentation on magnetic resonance

Boccardi

Bocchetta

Apostolova

et al. 2014

Alzheimer's & Dementia

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Background This study aimed to have international experts converge on a harmonized definition of whole hippocampus boundaries and segmentation procedures, to define standard operating procedures for magnetic resonance (MR)-based manual hippocampal segmentation. Methods The panel received a questionnaire regarding whole hippocampus boundaries and segmentation procedures. Quantitative information was supplied to allow evidence-based answers. A recursive and anonymous Delphi procedure was used to achieve convergence. Significance of agreement among panelists was assessed by exact probability on Fisher’s and binomial tests. Results Agreement was significant on the inclusion of alveus/fimbria (P =.021), whole hippocampal tail (P =.013), medial border of the body according to visible morphology (P =.0006), and on this combined set of features (P =.001). This definition captures 100% of hippocampal tissue, 100% of Alzheimer’s disease-related atrophy, and demonstrated good reliability on preliminary intrarater (0.98) and inter-rater (0.94) estimates. Discussion Consensus was achieved among international experts with respect to hippocampal segmentation using MR resulting in a harmonized segmentation protocol.

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