brain_structure_descriptions.json

{
    "Frontal Pole": {
        "Shape": "Rounded and prominent, distinctly delineating the anterior-most aspect",
        "Location": "Most anterior part of the frontal lobe, visible on sagittal MRI views",
        "Intensity_Profile": "Shows a relatively uniform intensity, slightly lighter than the surrounding frontal cortex"
    },
    "Insular Cortex": {
        "Shape": "Appears as a thin, crescent-shaped layer",
        "Location": "Deep within the lateral fissure, obscured by the opercula of the frontal and temporal lobes",
        "Intensity_Profile": "Exhibits a consistent intensity, blending with adjacent cortical regions"
    },
    "Superior Frontal Gyrus": {
        "Shape": "Robust, elongated gyrus",
        "Location": "Positioned superiorly in the frontal lobe, extending from the frontal pole to the precentral gyrus",
        "Intensity_Profile": "Maintains a homogenous intensity, in line with the general frontal cortex"
    },
    "Middle Frontal Gyrus": {
        "Shape": "Broad, horizontally oriented gyrus",
        "Location": "Lies between the superior and inferior frontal gyri, prominent in coronal MRI views",
        "Intensity_Profile": "Displays intensity similar to the adjacent frontal gyri, consistent with grey matter"
    },
    "Inferior Frontal Gyrus, pars triangularis": {
        "Shape": "Triangular region, demarcated by sulci",
        "Location": "Located in the anterior part of the inferior frontal gyrus, seen clearly in axial views",
        "Intensity_Profile": "Presents an intensity akin to the frontal lobe cortex, with subtle variations"
    },
    "Inferior Frontal Gyrus, pars opercularis": {
        "Shape": "Broader and more uniform than pars triangularis",
        "Location": "Forms the posterior part of the inferior frontal gyrus, adjacent to the precentral gyrus",
        "Intensity_Profile": "Shows a consistent intensity pattern with the surrounding frontal cortex"
    },
    "Precentral Gyrus": {
        "Shape": "Thick, prominent gyrus characterized by vertical orientation",
        "Location": "Located anterior to the central sulcus, extending from the superior to the inferior frontal gyrus",
        "Intensity_Profile": "Often demonstrates slightly higher intensity due to its role in motor function"
    },
    "Temporal Pole": {
        "Shape": "Rounded, anterior extremity of the temporal lobe",
        "Location": "Forms the anterior tip of the temporal lobe, identifiable in sagittal and axial MRI views",
        "Intensity_Profile": "Can vary, but generally appears slightly darker or heterogeneous compared to the rest of the temporal lobe"
    },
    "Superior Temporal Gyrus, anterior division": {
        "Shape": "Narrower and more defined than the posterior division",
        "Location": "Situated in the anterior portion of the superior temporal gyrus, visible in coronal and axial views",
        "Intensity_Profile": "Typically mirrors the intensity of the superior temporal gyrus"
    },
    "Superior Temporal Gyrus, posterior division": {
        "Shape": "Wider and less defined than the anterior division",
        "Location": "Occupies the posterior section of the superior temporal gyrus, extending towards the parietal lobe",
        "Intensity_Profile": "Shows consistency with the general intensity of the temporal cortex"
    },
    "Middle Temporal Gyrus, anterior division": {
        "Shape": "Long, slightly curved structure",
        "Location": "Located in the anterior part of the middle temporal gyrus, evident in axial and coronal views",
        "Intensity_Profile": "Exhibits an intensity consistent with the cortical ribbon of the temporal lobe"
    },
    "Middle Temporal Gyrus, posterior division": {
        "Shape": "Broader and more irregular than the anterior division",
        "Location": "Lies in the posterior segment of the middle temporal gyrus, extending towards the occipital lobe",
        "Intensity_Profile": "Typically matches the general intensity of the temporal cortex, may show variations near the occipital junction"
    },
    "Middle Temporal Gyrus, temporooccipital part": {
        "Shape": "Elongated and narrows as it approaches the occipital lobe",
        "Location": "Bridges the temporal and occipital lobes, visible in axial and sagittal views",
        "Intensity_Profile": "Exhibits a gradient intensity, blending the characteristics of temporal and occipital lobes"
    },
    "Inferior Temporal Gyrus, anterior division": {
        "Shape": "Slim, curved structure",
        "Location": "Located in the anterior part of the inferior temporal gyrus, evident in axial MRI scans",
        "Intensity_Profile": "Consistent with the intensity of the inferior temporal lobe, slightly lighter than the posterior division"
    },
    "Inferior Temporal Gyrus, posterior division": {
        "Shape": "Thicker and more pronounced than the anterior division",
        "Location": "Occupies the posterior portion of the inferior temporal gyrus, near the temporooccipital junction",
        "Intensity_Profile": "Displays a slightly darker intensity compared to the anterior division, reflecting the denser cortical architecture"
    },
    "Inferior Temporal Gyrus, temporooccipital part": {
        "Shape": "Tapers off as it merges with the occipital lobe",
        "Location": "Extends from the posterior division of the inferior temporal gyrus to the occipital lobe",
        "Intensity_Profile": "Shows a blending intensity between the temporal and occipital regions"
    },
    "Postcentral Gyrus": {
        "Shape": "Prominent, ridge-like gyrus",
        "Location": "Immediately posterior to the central sulcus, traversing from the superior to the inferior parietal lobule",
        "Intensity_Profile": "Typically exhibits a slightly higher intensity due to its high density of sensory receptors"
    },
    "Superior Parietal Lobule": {
        "Shape": "Broad, flat region",
        "Location": "Located superiorly in the parietal lobe, extending from the postcentral gyrus to the parieto-occipital sulcus",
        "Intensity_Profile": "Displays a uniform intensity characteristic of the parietal cortex"
    },
    "Supramarginal Gyrus, anterior division": {
        "Shape": "Curved and hook-like",
        "Location": "Forms the anterior part of the supramarginal gyrus, visible in coronal MRI views",
        "Intensity_Profile": "Intensity is consistent with the surrounding parietal cortex, but may show variations due to underlying cytoarchitecture"
    },
    "Supramarginal Gyrus, posterior division": {
        "Shape": "More irregular and less defined than the anterior division",
        "Location": "Occupies the posterior segment of the supramarginal gyrus, extending towards the angular gyrus",
        "Intensity_Profile": "Demonstrates a slightly varied intensity, often blending with the angular gyrus"
    },
    "Angular Gyrus": {
        "Shape": "Prominently rounded, star-like in appearance",
        "Location": "Located at the posterior end of the superior temporal sulcus, at the parietal-occipital-temporal junction",
        "Intensity_Profile": "Shows a unique intensity pattern, often slightly heterogeneous due to its complex functional integration"
    },
    "Lateral Occipital Cortex, superior division": {
        "Shape": "Irregular, multi-folded surface",
        "Location": "Occupies the upper portion of the lateral occipital cortex, extending to the parieto-occipital sulcus",
        "Intensity_Profile": "Exhibits variable intensity, reflecting the diverse visual processing areas"
    },
    "Lateral Occipital Cortex, inferior division": {
        "Shape": "Less convoluted than the superior division",
        "Location": "Situated in the lower part of the lateral occipital cortex, near the fusiform gyrus",
        "Intensity_Profile": "Generally consistent in intensity"
    },
    "Intracalcarine Cortex": {
        "Shape": "Narrow, longitudinally oriented",
        "Location": "Resides within the calcarine sulcus, forming the primary visual cortex",
        "Intensity_Profile": "Markedly different, often darker, due to the dense packing of visual receptors"
    },
    "Frontal Medial Cortex": {
        "Shape": "Smooth, less gyri and sulci compared to lateral frontal areas",
        "Location": "Located in the medial portion of the frontal lobe, above the corpus callosum",
        "Intensity_Profile": "Varies subtly, often lighter, reflecting its high connectivity and executive function role"
    },
    "Juxtapositional Lobule Cortex (formerly Supplementary Motor Cortex)": {
        "Shape": "Flat and elongated",
        "Location": "Centrally positioned above the cingulate gyrus, adjacent to the primary motor cortex",
        "Intensity_Profile": "Similar to primary motor cortex but can exhibit variations due to different functional subregions"
    },
    "Subcallosal Cortex": {
        "Shape": "Small, compact area",
        "Location": "Beneath the rostral end of the corpus callosum, near the anterior commissure",
        "Intensity_Profile": "Shows distinct intensity"
    },
    "Paracingulate Gyrus": {
        "Shape": "Narrow, more pronounced in some individuals",
        "Location": "Lies parallel and superior to the cingulate gyrus, predominantly in the left hemisphere",
        "Intensity_Profile": "Varies widely"
    },
    "Cingulate Gyrus, anterior division": {
        "Shape": "Broad, arching over the corpus callosum",
        "Location": "Stretches from just behind the frontal pole to the corpus callosum",
        "Intensity_Profile": "Varied intensity, associated with emotional regulation and executive functions"
    },
    "Cingulate Gyrus, posterior division": {
        "Shape": "Thinner and less curved than the anterior division",
        "Location": "Extends from the corpus callosum to the parietal lobe",
        "Intensity_Profile": "More uniform intensity, linked with emotional processing and autobiographical memory"
    },
    "Precuneous Cortex": {
        "Shape": "Broad and slightly concave",
        "Location": "Located on the medial aspect of the parietal lobe, between the marginal branch of the cingulate sulcus and the parieto-occipital sulcus",
        "Intensity_Profile": "Shows moderate intensity, indicating its role in complex cognitive functions such as episodic memory and visuospatial processing"
    },
    "Cuneal Cortex": {
        "Shape": "Small, wedge-shaped",
        "Location": "Situated in the occipital lobe, adjacent to the calcarine sulcus",
        "Intensity_Profile": "Typically exhibits a consistent intensity, reflecting its involvement in basic visual processing"
    },
    "Frontal Orbital Cortex": {
        "Shape": "Flat and triangular, divided by shallow sulci",
        "Location": "Located on the inferior surface of the frontal lobe, above the orbits",
        "Intensity_Profile": "Varies, often involved in decision-making and emotional processing"
    },
    "Parahippocampal Gyrus, anterior division": {
        "Shape": "Narrow and elongated",
        "Location": "Forms the anterior part of the parahippocampal gyrus, extending to the uncus",
        "Intensity_Profile": "Exhibits a heterogeneous intensity, associated with memory encoding and retrieval"
    },
    "Parahippocampal Gyrus, posterior division": {
        "Shape": "Broader than the anterior division",
        "Location": "Occupies the posterior part of the parahippocampal gyrus, extending towards the occipital lobe",
        "Intensity_Profile": "Shows consistent intensity, involved in spatial memory and navigation"
    },
    "Lingual Gyrus": {
        "Shape": "Long, narrow gyrus",
        "Location": "Located on the medial surface of the occipital lobe, adjacent to the calcarine sulcus",
        "Intensity_Profile": "Maintains a uniform intensity, reflecting its role in visual processing"
    },
    "Temporal Fusiform Cortex, anterior division": {
        "Shape": "Tapered and elongated",
        "Location": "Situated in the anterior part of the fusiform gyrus, extending towards the temporal pole",
        "Intensity_Profile": "Varies, involved in high-level visual processing such as face recognition"
    },
    "Temporal Fusiform Cortex, posterior division": {
        "Shape": "Wider than the anterior division",
        "Location": "Forms the posterior section of the fusiform gyrus, extending towards the occipital lobe",
        "Intensity_Profile": "Consistent with typical cortical intensity, involved in object recognition"
    },
    "Temporal Occipital Fusiform Cortex": {
        "Shape": "Irregular, located at the convergence of temporal and occipital regions",
        "Location": "Bridges the temporal and occipital lobes, visible in sagittal and axial views",
        "Intensity_Profile": "Exhibits a blend of intensities from both temporal and occipital lobes"
    },
    "Occipital Fusiform Gyrus": {
        "Shape": "Curved and slender",
        "Location": "Situated in the occipital lobe, near the inferior temporal gyrus",
        "Intensity_Profile": "Shows a uniform intensity"
    },
    "Frontal Operculum Cortex": {
        "Shape": "Small, convoluted region",
        "Location": "Located on the lower lateral surface of the frontal lobe, adjacent to the lateral sulcus",
        "Intensity_Profile": "shows isointense to slightly hypointense compared to surrounding grey matter"
    },
    "Central Opercular Cortex": {
        "Shape": "Narrow, sandwiched between the precentral and postcentral gyri",
        "Location": "Lies over the insular cortex, forming part of the operculum",
        "Intensity_Profile": "shows isointense compared to the adjacent cortical regions"
    },
    "Parietal Operculum Cortex": {
        "Shape": "Irregular, consists of several subregions",
        "Location": "Covers the upper part of the insular cortex, within the lateral sulcus",
        "Intensity_Profile": "shows isointense with variable contrast in subregions"
    },
    "Planum Polare": {
        "Shape": "Smooth, triangular region",
        "Location": "Located at the anterior end of the superior temporal gyrus",
        "Intensity_Profile": "shows isointense to the surrounding cortical grey matter"
    },
    "Heschl's Gyrus (includes H1 and H2)": {
        "Shape": "Prominent transverse gyrus",
        "Location": "Situated in the lateral part of the superior temporal gyrus, forming the primary auditory cortex",
        "Intensity_Profile": "shows distinct intensity"
    },
    "Planum Temporale": {
        "Shape": "Irregular, larger in the left hemisphere",
        "Location": "Posterior to Heschl's gyrus, within the lateral sulcus",
        "Intensity_Profile": "shows variable intensity"
    },
    "Supracalcarine Cortex": {
        "Shape": "Sits above and around the calcarine sulcus",
        "Location": "Occupies the medial aspect of the occipital lobe",
        "Intensity_Profile": "is consistent with visual processing areas"
    },
    "Occipital Pole": {
        "Shape": "Rounded, posterior extremity of the occipital lobe",
        "Location": "Most posterior point of the cerebral hemisphere",
        "Intensity_Profile": "shows typically homogeneous"
    },
    "Left Cerebral White Matter": {
        "Shape": "Extensive, fibrous tissue",
        "Location": "Underlies the left cerebral cortex, extending throughout the hemisphere",
        "Intensity_Profile": "shows uniform appearance, indicative of myelinated axons"
    },
    "Left Cerebral Cortex": {
        "Shape": "Highly folded outer layer of the brain",
        "Location": "Encompasses the left hemisphere surface",
        "Intensity_Profile": "shows isointense with cortical grey matter, displaying cortical ribbon effect"
    },
    "Left Lateral Ventricle": {
        "Shape": "C-shaped, hollow structure",
        "Location": "Within the left cerebral hemisphere, extending from the frontal to the occipital lobe",
        "Intensity_Profile": "appears hypointense"
    },
    "Left Thalamus": {
        "Shape": "Ovoid, symmetrical structure",
        "Location": "Deep within the left cerebral hemisphere, part of the diencephalon",
        "Intensity_Profile": "shows isointense to the cortical grey matter"
    },
    "Left Caudate": {
        "Shape": "C-shaped, elongated nucleus",
        "Location": "Alongside the lateral ventricle in the left hemisphere",
        "Intensity_Profile": "shows isointense to cortical grey matter, similar to thalamus"
    },
    "Left Putamen": {
        "Shape": "Round, part of the basal ganglia",
        "Location": "Situated lateral to the thalamus in the left hemisphere",
        "Intensity_Profile": "shows isointense to cortical grey matter, similar to caudate and thalamus"
    },
    "Left Pallidum": {
        "Shape": "Small, ovoid structure",
        "Location": "Lies medial to the putamen in the left hemisphere",
        "Intensity_Profile": "shows distinct intensity"
    },
    "Brain-Stem": {
        "Shape": "Stalk-like, connects to the spinal cord",
        "Location": "Beneath the cerebral hemispheres, connects to the cerebellum",
        "Intensity_Profile": "shows isointense to slightly hypointense compared to the surrounding white matter"
    },
    "Left Hippocampus": {
        "Shape": "S-shaped, elongated structure",
        "Location": "Deep in the temporal lobe of the left hemisphere",
        "Intensity_Profile": "shows isointense to slightly hypointense compared to surrounding white matter"
    },
    "Left Amygdala": {
        "Shape": "Almond-shaped",
        "Location": "Anterior to the hippocampus in the left temporal lobe",
        "Intensity_Profile": "shows isointense compared to the cortical grey matter"
    },
    "Left Accumbens": {
        "Shape": "Small, oval nucleus",
        "Location": "Near the junction of the left frontal lobe and the basal ganglia",
        "Intensity_Profile": "shows isointense compared to the surrounding grey matter"
    },
    "Right Cerebral White Matter": {
        "Shape": "Extensive network of fibers",
        "Location": "Beneath the right cerebral cortex, permeating the hemisphere",
        "Intensity_Profile": "shows Uniform appearance, indicative of myelinated axons"
    },
    "Right Cerebral Cortex": {
        "Shape": "Extensively folded outer layer",
        "Location": "Covers the right hemisphere",
        "Intensity_Profile": "shows isointense with cortical grey matter, displaying cortical ribbon effect"
    },
    "Right Lateral Ventricle": {
        "Shape": "C-shaped, fluid-filled space",
        "Location": "Extending within the right cerebral hemisphere",
        "Intensity_Profile": "appears hypointense"
    },
    "Right Thalamus": {
        "Shape": "Ovoid, symmetric with the left thalamus",
        "Location": "Centrally placed in the right hemisphere",
        "Intensity_Profile": "shows isointense to the cortical grey matter"
    },
    "Right Caudate": {
        "Shape": "Elongated, C-shaped",
        "Location": "Adjacent to the right lateral ventricle",
        "Intensity_Profile": "shows isointense to cortical grey matter, similar to thalamus"
    },
    "Right Putamen": {
        "Shape": "Round, basal ganglia component",
        "Location": "Lateral to the right thalamus",
        "Intensity_Profile": "shows isointense to cortical grey matter, similar to caudate and thalamus"
    },
    "Right Pallidum": {
        "Shape": "Small, ovoid",
        "Location": "Medial to the right putamen",
        "Intensity_Profile": "shows distinct intensity"
    },
    "Right Hippocampus": {
        "Shape": "Curved, elongated",
        "Location": "In the temporal lobe of the right hemisphere",
        "Intensity_Profile": "shows isointense to slightly hypointense compared to surrounding white matter"
    },
    "Right Amygdala": {
        "Shape": "Almond-like",
        "Location": "In front of the right hippocampus",
        "Intensity_Profile": "shows isointense compared to the cortical grey matter"
    },
    "Right Accumbens": {
        "Shape": "Small, oval",
        "Location": "At the junction of the right frontal lobe and basal ganglia",
        "Intensity_Profile": "shows isointense compared to the surrounding grey matter"
    }
}