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magnetic-resonance
492 studies tagged magnetic-resonance, dated 1986-01-01 to 2026-03-31. Bibliography: BibTeX (.bib) · RIS (.ris)
Newest in this topic
- Synaptic loss in alcohol use disorder: clinical and mechanistic insights from a PET imaging study 2026-03-31
- Neighborhood environmental deprivation predicts the generalized neurocognitive deficit in schizophrenia 2025-12-19
- Bridging the Gap: Can Hippocampal Sclerosis Serve as a Surrogate Biomarker for LATE‐NC? 2025-12-01
Studies
492 studies carry this tag.
Date range
1986 to 2026
Top journals
- Neurology 38
- Biological psychiatry 36
- NeuroImage 32
- The American journal of psychiatry 22
- Proceedings of the National Academy of Sciences of the United States of America 20
148 journals in all.
Newest first, then by address. Each study has a usefulness score out of 100 (rubric version 4.0); tap a score to see what makes it up. Tags were assigned automatically from each study's title and summary. The same studies as a filter in the library.
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Poor memory ability and small hippocampal volume measurements in magnetic resonance images co-occur in neurological patients.
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53/100
Lesions in the hippocampus (HC), the entorhinal cortex (EC), and the prefrontal cortex (PFC) are associated with impairment of episodic memory; reduced HC volume is linked to memory declines in dementia; and decline in EC volume predicts progression from mild cognitive impairment to dementia.
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Acute stress suppresses new cell birth in the hippocampus in several species.
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These results suggest that BD is associated with decreased volumes of medial temporal lobe structures, with greater effect sizes in the amygdala than in the hippocampus.
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Aging is often accompanied by learning and memory problems, many of which resemble deficits associated with hippocampal damage.
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These findings indicate that the prenatal environment can alter behavior, dysregulate neuroendocrine systems, and affect the hippocampal structure of primates in a persistent manner.
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Rates of hippocampal volume loss have been shown to distinguish subjects with dementia of the Alzheimer type (DAT) from nondemented controls.
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These findings suggest that long-term treatment with paroxetine is associated with improvement of verbal declarative memory deficits and an increase in hippocampal volume in PTSD.
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Serial quantitative magnetic resonance imaging (MRI) allows the detection of subtle volumetric changes in brain volume.
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Our recently published data on children investigated within 5 days of a PFC showed that children investigated by MRI within 48 h of a PFC had large hippocampal volumes and prolongation of T2 relaxation time.
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Antidepressants may have a neuroprotective effect during depression.
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MRI studies using the manual tracing method have shown a smaller-than-normal hippocampal volume in patients with posttraumatic stress disorder (PTSD).
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These results are consistent with deficits in hippocampal function and structure in abuse-related PTSD.
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Processing of speech is obligatory. Thus, during normal speech comprehension, the listener is aware of the overall meaning of the speaker's utterance without the need to direct attention to individual linguistic and paralinguistic (intonational, prosodic, etc.) features contained within the speech signal.
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Borderline personality disorder (BPD) is a common disorder associated with emotional dysregulation and other symptoms that have been hypothesized to be related to dysfunction of limbic brain areas including hippocampus and amygdala.
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Twelve patients with refractory temporal lobe epilepsy and unilateral hippocampal sclerosis had repeat volumetric magnetic resonance imaging scans after a mean of 3.4 years to determine whether progressive hippocampal volume loss occurred.
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These findings support the hypothesis of reduced serotonin receptor binding in temporal lobe epileptic foci.
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Several recent studies indicate that activity of cholinergic enzymes in the cortex of people with mild cognitive impairment (MCI) and early Alzheimer's disease (AD) are preserved.
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Studies have examined hippocampal function and volume in depressed subjects, but none have systematically compared never-treated first-episode patients with those who have had multiple episodes.
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High-resolution magnetic resonance microscopy (MRM) was used to determine regional brain volumetric changes in a mouse model of Alzheimer's disease.
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Patients with major depression may have structural abnormalities of the hippocampus that can be detected by analysis of hippocampal shape but not volume.
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Patients with Alzheimer's disease have higher plasma homocysteine levels than controls, but it is uncertain whether higher plasma homocysteine levels are involved in the early pathogenesis of the disease.
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These results suggest that alterations in amygdala:hippocampal volume ratios in pediatric MDD may more reflect severity of associated anxiety than depression.
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The consistency of MRI measurements obtained across sites, and the consistency between the multisite milameline data and that obtained in prior single-site studies, demonstrate the technical feasibility of using structural MRI measures as a surrogate endpoint of disease progression in therapeutic trials.
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Grey matter volume in the posterior hippocampus of London taxi drivers is greater than in age-matched controls, and the size of this increase correlates positively with time spent taxi driving (E.A.
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A smaller hippocampal volume in adult women with major depressive disorder was observed exclusively in those who had a history of severe and prolonged physical and/or sexual abuse in childhood.
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Schizophrenia is associated with structural deformities of the hippocampus, which suggest a disturbance of the connections between the hippocampus and the frontal cortex.
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In animals, exposure to severe stress can damage the hippocampus.
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Because the automatic calculations were faster and less susceptible to rater bias than manual tracing, this automated method is expected to be very useful for analyzing hippocampal changes in studies of aging and dementia.
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These findings suggest that in patients with schizophrenia spectrum disorders, hippocampal volume is influenced in part by schizophrenia susceptibility genes and an interaction of these genes with fetal hypoxia.
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Compared with controls, relatives, particularly from multiplex families, had significantly smaller left hippocampi.
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Hippocampal volume may index disease severity and predict progression in AD.
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These data provide further evidence of structural brain abnormalities in geriatric depression, particularly in patients with a longer course of illness.
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Evidence from neuroimaging studies has suggested areas of the brain that may be damaged by psychological trauma.
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Our results replicate previous findings of reduced hippocampal volume in PTSD but also suggest independent, generalized, white matter atrophy.
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The effect of depression on the hippocampus has become the focus of a number of structural and functional neuroimaging studies.
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The hippocampus is crucial for normal brain function, especially for the encoding and retrieval of multimodal sensory information.
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Postmortem MRI scans were obtained for the first 56 participants of the Nun Study who were scanned.
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This longitudinal quantitative magnetic resonance imaging study of 24 patients with mild temporal lobe epilepsy shows an ipsilateral hippocampal volume decrease of 9% (range, -30 to +0.5%; p = 0.002, paired t test) over a period of 3.5 +/- 0.7 years.
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Recent intriguing reports have shown an association between major depression and selective and persistent loss of hippocampal volume, prompting considerable speculation as to its underlying causes.
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Longitudinally oriented axon collaterals of CA3 pyramidal cells may be critical for integrating distributed information in the hippocampus.
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Intractable epilepsy is related to various transient and chronic brain electric and neurochemical disturbances.
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The results confirmed the correlation between hippocampal volumes and neuron cell counts.
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The purpose of this study is to explore the possibility of progressive neuropsychological decline in chronic temporal lobe epilepsy (TLE) and determine how this vulnerability may be associated with the neurodevelopmental impact of the disorder. 53 patients with TLE and 62 healthy controls underwent quantitative MRI volumetric imaging of total brain tissue and hippocampal volumes as well as assessment of intelligence and memory function.
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Frontal lobe abnormalities may occur as a result of PTSD in children or, alternatively, be a risk factor for the development of the syndrome in this age group.
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40/100
N-acetyl asparate and creatine reductions imply that there are hippocampal abnormalities in posttraumatic stress disorder.
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The presence of a single APOE-epsilon4 allele is associated with an increased rate of hippocampal volume loss in healthy women in their sixth decade of life that is not related to any detectable memory changes.
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In major depression, decreased hippocampal volume has been attributed to hypercortisolemia, a frequent sign of the disorder, because in animals an excess of corticosteroids has led to dendritic atrophy, astrogliosis and loss of neurons in this brain region.
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Epilepsy is a common outcome of traumatic brain injury (TBI), but the mechanisms of posttraumatic epileptogenesis are poorly understood.
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The present study measured prefrontal cortical gray and white matter volume in chronic, male schizophrenic subjects who were characterized by a higher proportion of mixed or negative symptoms than previous patients that we have evaluated.
From across this tag
10 of the 492 studies in this tag, picked by a fixed rule (a hash of each study's address), not by score or date; each page of this list shows a different 10. The same 10 appear here every time.
- In vivo quantification of hippocampal subfields using 4.7 T fast spin echo imaging
- Hippocampal Volume Loss as A Marker of Cognitive Decline in Dementia and Mild Cognitive Impairment: A Comprehensive Prospective Study
- The role of hippocampus in the pathophysiology of bipolar disorder
- Quantitative synaptic alterations in the human neocortex during normal aging
- Hippocampal and Amygdala Gray Matter Loss in Elderly Controls with Subtle Cognitive Decline
- 3D PIB and CSF biomarker associations with hippocampal atrophy in ADNI subjects
- Enriched environment restores hippocampal cell proliferation and ameliorates cognitive deficits in chronically stressed rats
- Brain-derived neurotrophic factor is associated with age-related decline in hippocampal volume
- Adult Hippocampal Neurogenesis in Major Depressive Disorder and Alzheimer's Disease
- Is gray matter volume an intermediate phenotype for schizophrenia? A voxel-based morphometry study of patients with schizophrenia and their healthy siblings