| Volumetry of temporopolar, perirhinal, entorhinal and parahippocampal cortex from high-resolution MR images: considering the variability of the collateral sulcus. | |
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MedLine Citation:
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PMID: 12427684 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Researchers in clinical and basic neuroscience frequently target structures of the human medial temporal lobe (MTL) for volumetric analysis with magnetic resonance imaging (MRI). In neurodegenerative diseases, a precise volumetric analysis of MTL structures can assist in differential diagnosis and can be used in guiding early treatment. Also, in functional neuroimaging, exact localization is crucial for the correct interpretation of focal MTL activations with respect to specific memory functions. In presently available protocols, precise and consistent volumetric analysis of MTL structures is compromised in numerous ways. Most importantly, in order to cover all structures of the MTL, the researcher is presently forced to combine independently developed segmentation protocols for different structures from different laboratories. This approach limits anatomical precision because these protocols are based on different anatomical guidelines and descriptions that cannot easily be integrated. The segmentation approach presented in this paper was designed to address this issue by presenting segmentation guidelines for all major structures of the parahippocampal gyrus (PHG). It was developed directly to complement a volumetric protocol for hippocampus and amygdala (Pruessner et al., 2000, Cereb Cortex 10:433-442), thus allowing volumetric assessment of all major MTL structures in an integrated and consistent manner. Furthermore, it takes into consideration the neuroanatomical appearance of the collateral sulcus by presenting a method to correct the volumes of the surrounding cortices for the variability of this sulcus. The protocol was validated using MR images of 40 healthy normal control subjects (20 men and 20 women, age range 18-42 years). Intra- and interrater coefficients are presented, together with mean values for the volumes of all PHG structures, correlations with age and sex, and tests for hemispheric differences. |
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Authors:
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Jens C Pruessner; Stefan Köhler; Joelle Crane; Marita Pruessner; Catherine Lord; Andrea Byrne; Noor Kabani; D Louis Collins; Alan C Evans |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Cerebral cortex (New York, N.Y. : 1991) Volume: 12 ISSN: 1047-3211 ISO Abbreviation: Cereb. Cortex Publication Date: 2002 Dec |
Date Detail:
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Created Date: 2002-11-12 Completed Date: 2003-02-07 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9110718 Medline TA: Cereb Cortex Country: United States |
Other Details:
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Languages: eng Pagination: 1342-53 Citation Subset: IM |
Affiliation:
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McConnell Brain Imaging Center, Montreal Neurological Institute, Douglas Hospital Research Center, McGill University, Montreal, Quebec, Canada. jens@bic.mni.mcgill.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Brain Mapping Entorhinal Cortex / anatomy & histology*, physiology Female Humans Magnetic Resonance Imaging* / methods Male Parahippocampal Gyrus / anatomy & histology*, physiology Reference Values Temporal Lobe / anatomy & histology*, physiology |
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