keyword
MENU ▼
Read by QxMD icon Read
search

Brain surface mri

keyword
https://www.readbyqxmd.com/read/29208422/support-vector-machine-based-classification-of-first-episode-drug-na%C3%A3-ve-schizophrenia-patients-and-healthy-controls-using-structural-mri
#1
Yuan Xiao, Zhihan Yan, Youjin Zhao, Bo Tao, Huaiqiang Sun, Fei Li, Li Yao, Wenjing Zhang, Shah Chandan, Jieke Liu, Qiyong Gong, John A Sweeney, Su Lui
Although regional brain deficits have been demonstrated in schizophrenia patients by structural MRI studies, one important question that remains largely unanswered is whether the complex and subtle deficits revealed by MRI could be used as objective biomarkers to discriminate patients from healthy controls individually. To address this question, a total of 326 right-handed participants were recruited, including 163 drug-naïve first-episode schizophrenia (FES) patients and 163 demographically matched healthy controls...
December 2, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29200179/structural-and-functional-abnormalities-of-the-insular-cortex-in-trigeminal-neuralgia-a-multimodal-mri-analysis
#2
Yue Wang, Yuanchao Zhang, Jinlei Zhang, Jiaojian Wang, Jinping Xu, Jie Li, Gaoyu Cui, Jiuquan Zhang
Trigeminal neuralgia (TN) is a chronic neuropathic pain disorder characterized by intense, lancinating attacks of facial pain. Increasing evidence suggests that TN is accompanied by abnormalities in brain morphology, white matter microstructure and function. However, whether these abnormalities are linked or reflect independent etiologies remains unknown. Using multimodal magnetic resonance imaging data of 20 TN patients and 21 healthy controls (HC), we investigated cortical gyrification abnormalities, their relationships with abnormalities of the underlying white matter microstructure and gray matter morphology, as well as their functional significance in TN...
December 1, 2017: Pain
https://www.readbyqxmd.com/read/29190325/joint-analysis-of-cortical-area-and-thickness-as-a-replacement-for-the-analysis-of-the-volume-of-the-cerebral-cortex
#3
Anderson M Winkler, Douglas N Greve, Knut J Bjuland, Thomas E Nichols, Mert R Sabuncu, Asta K Ha Berg, Jon Skranes, Lars M Rimol
Cortical surface area is an increasingly used brain morphology metric that is ontogenetically and phylogenetically distinct from cortical thickness and offers a separate index of neurodevelopment and disease. However, the various existing methods for assessment of cortical surface area from magnetic resonance images have never been systematically compared. We show that the surface area method implemented in FreeSurfer corresponds closely to the exact, but computationally more demanding, mass-conservative (pycnophylactic) method, provided that images are smoothed...
November 28, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29188017/identification-of-the-ventral-occipital-visual-field-maps-in-the-human-brain
#4
Jonathan Winawer, Nathan Witthoft
The location and topography of the first three visual field maps in the human brain, V1-V3, are well agreed upon and routinely measured across most laboratories. The position of 4 th visual field map, 'hV4', is identified with less consistency in the neuroimaging literature.  Using magnetic resonance imaging data, we describe landmarks to help identify the position and borders of 'hV4'. The data consist of anatomical images, visualized as cortical meshes to highlight the sulcal and gyral patterns, and functional data obtained from retinotopic mapping experiments, visualized as eccentricity and angle maps on the cortical surface...
2017: F1000Research
https://www.readbyqxmd.com/read/29187254/acute-disseminated-melioidosis-giving-rise-to-pneumonia-and-renal-abscesses-complicated-with-thrombotic-thrombocytopenic-purpura-in-a-post-partum-woman-a-case-report
#5
Piyumi Sachindra Alwis Wijewickrama, Rohini Weerakoon
BACKGROUND: Melioidosis is an established endemic infection in Sri Lanka, caused by Burkholderia pseudomallei, a gram negative bacterium distributed in saprophytes in soil and surface water. Main mode of transmission is via percutaneous inoculation. Pneumonia is the most common presentation in acute disease. CASE PRESENTATION: We report a 33 year old previously healthy Sinhalese female with an occupational exposure to surface water in paddy fields, who was on postpartum day 6 following an uncomplicated pregnancy and delivery via an elective caesarian section...
November 29, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29179056/cortical-morphometry-and-cognition-in-very-preterm-and-term-born-children-at-early-school-age
#6
Ines Mürner-Lavanchy, Christian Rummel, Maja Steinlin, Regula Everts
Very preterm birth influences brain development and may result in alterations of cortical morphometry. These structural alterations may interact with cognitive development. The aim of the present study was to investigate the structure-function relationship in school-aged very preterm and term-born control children. A comprehensive neuropsychological test battery was administered to 41 very preterm (<32 weeks of gestation) and 30 term-born control children aged seven to twelve years. The automated method FreeSurfer was used to obtain cortical thickness and cortical surface area measures from T1-weighted MRI images...
November 24, 2017: Early Human Development
https://www.readbyqxmd.com/read/29170094/the-choline-acetyltransferase-chat-gene-is-associated-with-parahippocampal-and-hippocampal-structure-and-short-term-memory-span
#7
Bi Zhu, Chuansheng Chen, Robert K Moyzis, Qi Dong, Chongde Lin
The CHAT gene encodes choline acetyltransferase, which is an enzyme responsible for the biosynthesis of the neurotransmitter acetylcholine in the brain. This study collected structural MRI, genetic, and behavioral data from 324 healthy Chinese adults, and examined the associations between CHAT genetic variants, parahippocampal and hippocampal structure, and short-term memory span. After controlling for intracranial volume, sex, and age, CHAT SNP rs12246528 had the strongest association with parahippocampal structure, with the A allele being linked to smaller volume, surface area, and thickness...
November 21, 2017: Neuroscience
https://www.readbyqxmd.com/read/29163342/novel-anterior-brainstem-magnetic-resonance-imaging-findings-in-non-small-cell-lung-cancer-with-leptomeningeal-carcinomatosis
#8
Chun-Yu Cheng, Chia-Yu Hsu, Yuan-Hsiung Tsai, Kuang-Lin Lin, Cih-En Huang, Yi-Hong Fan, Shy-Chyi Chin, Yen-Chu Huang
Leptomeningeal carcinomatosis (LC) is found in around 4% of patients with non-small cell lung cancer (NSCLC). The most common radiological finding of LC is diffuse leptomeningeal enhancement on contrast-enhanced brain magnetic resonance imaging (MRI). Herein, we report a novel brain MRI finding-non-enhanced, band-like, symmetric restricted diffusion along the anterior surface of the brainstem-of LC in four patients with NSCLC. We also identified three additional cases with similar MRI findings in a literature review...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29163118/semi-automated-anatomical-labeling-and-inter-subject-warping-of-high-density-intracranial-recording-electrodes-in-electrocorticography
#9
Liberty S Hamilton, David L Chang, Morgan B Lee, Edward F Chang
In this article, we introduce img_pipe, our open source python package for preprocessing of imaging data for use in intracranial electrocorticography (ECoG) and intracranial stereo-EEG analyses. The process of electrode localization, labeling, and warping for use in ECoG currently varies widely across laboratories, and it is usually performed with custom, lab-specific code. This python package aims to provide a standardized interface for these procedures, as well as code to plot and display results on 3D cortical surface meshes...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/29163000/convergence-of-cortical-thalamocortical-and-callosal-pathways-during-human-fetal-development-revealed-by-diffusion-mri-tractography
#10
Rongpin Wang, Molly Wilkinson, Tara Kane, Emi Takahashi
There has been evidence that during brain development, emerging thalamocortical (TC) and corticothalamic (CT) pathways converge in some brain regions and follow each other's trajectories to their final destinations. Corpus callosal (CC) pathways also emerge at a similar developmental stage, and are known to converge with TC pathways in specific cortical regions in mature brains. Given the functional relationships between TC and CC pathways, anatomical convergence of the two pathways are likely important for their functional integration...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29160113/superficial-siderosis-of-central-nervous-system-with-unknown-cause-report-of-2-cases-and-review-of-the-literature
#11
Hao Chen, Hafiz Khuram Raza, Jia Jing, Xinchun Ye, Zuohui Zhang, Fang Hua, Guiyun Cui
OBJECTIVE: To report 2 cases of superficial siderosis of central nervous system (SS-CNS) and a review of the literature. METHODS: We have analyzed the clinical data and relevant features of two patients with SS-CNS who were presented with ataxia and slurred speech. Both patients undertook blood tests, lumbar puncture, head CT (computer tomography) scans, and brain and spinal cord magnetic resonance (MR) scans. In addition, the first patient also undewent enhanced susceptibility-weighted angiography (ESWAN) and the second patient undertook susceptibility weighted imaging (SWI) scan...
November 21, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29152222/preprocessed-consortium-for-neuropsychiatric-phenomics-dataset
#12
Krzysztof J Gorgolewski, Joke Durnez, Russell A Poldrack
Here we present preprocessed MRI data of 265 participants from the Consortium for Neuropsychiatric Phenomics (CNP) dataset. The preprocessed dataset includes minimally preprocessed data in the native, MNI and surface spaces accompanied with potential confound regressors, tissue probability masks, brain masks and transformations. In addition the preprocessed dataset includes unthresholded group level and single subject statistical maps from all tasks included in the original dataset. We hope that availability of this dataset will greatly accelerate research...
2017: F1000Research
https://www.readbyqxmd.com/read/29147631/automated-whole-brain-tractography-affects-preoperative-surgical-decision-making
#13
Hesham Zakaria, Sameah Haider, Ian Lee
Surgery in and around eloquent brain structures poses a technical challenge when the goal of surgery is maximal safe resection. Magnetic resonance imaging (MRI) has revolutionized the diagnosis and treatment of neurological disorders, but tractography still remains limited in terms of utility because of the requisite manual labor and time required combined with the high risk of bias and inaccuracy. Automated whole brain tractography (AWBT) has simplified this workflow, overcoming historical barriers, and allowing for integration into modern neuronavigation...
September 6, 2017: Curēus
https://www.readbyqxmd.com/read/29145754/cortical-and-subcortical-brain-morphometry-differences-between-patients-with-autism-spectrum-disorder-and-healthy-individuals-across-the-lifespan-results-from-the-enigma-asd-working-group
#14
Daan van Rooij, Evdokia Anagnostou, Celso Arango, Guillaume Auzias, Marlene Behrmann, Geraldo F Busatto, Sara Calderoni, Eileen Daly, Christine Deruelle, Adriana Di Martino, Ilan Dinstein, Fabio Luis Souza Duran, Sarah Durston, Christine Ecker, Damien Fair, Jennifer Fedor, Jackie Fitzgerald, Christine M Freitag, Louise Gallagher, Ilaria Gori, Shlomi Haar, Liesbeth Hoekstra, Neda Jahanshad, Maria Jalbrzikowski, Joost Janssen, Jason Lerch, Beatriz Luna, Mauricio Moller Martinho, Jane McGrath, Filippo Muratori, Clodagh M Murphy, Declan G M Murphy, Kirsten O'Hearn, Bob Oranje, Mara Parellada, Alessandra Retico, Pedro Rossa, Katya Rubia, Devon Shook, Margot Taylor, Paul M Thompson, Michela Tosetti, Gregory L Wallace, Fengfeng Zhou, Jan K Buitelaar
OBJECTIVE: Neuroimaging studies show structural differences in both cortical and subcortical brain regions in children and adults with autism spectrum disorder (ASD) compared with healthy subjects. Findings are inconsistent, however, and it is unclear how differences develop across the lifespan. The authors investigated brain morphometry differences between individuals with ASD and healthy subjects, cross-sectionally across the lifespan, in a large multinational sample from the Enhancing Neuroimaging Genetics Through Meta-Analysis (ENIGMA) ASD working group...
November 17, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/29119146/4d-infant-cortical-surface-atlas-construction-using-spherical-patch-based-sparse-representation
#15
Zhengwang Wu, Gang Li, Yu Meng, Li Wang, Weili Lin, Dinggang Shen
The 4D infant cortical surface atlas with densely sampled time points is highly needed for neuroimaging analysis of early brain development. In this paper, we build the 4D infant cortical surface atlas firstly covering 6 postnatal years with 11 time points (i.e., 1, 3, 6, 9, 12, 18, 24, 36, 48, 60, and 72 months), based on 339 longitudinal MRI scans from 50 healthy infants. To build the 4D cortical surface atlas, first, we adopt a two-stage groupwise surface registration strategy to ensure both longitudinal consistency and unbiasedness...
September 2017: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://www.readbyqxmd.com/read/29101522/is-the-planum-temporale-surface-area-a-marker-of-hemispheric-or-regional-language-lateralization
#16
Nathalie Tzourio-Mazoyer, Fabrice Crivello, Bernard Mazoyer
We investigated the association between the left planum temporale (PT) surface area or asymmetry and the hemispheric or regional functional asymmetries during language production and perception tasks in 287 healthy adults (BIL&GIN) who were matched for sex and handedness. The measurements of the PT surface area were performed after manually delineating the region using brain magnetic resonance images (MRI) and considering the Heschl's gyrus (HG) duplication pattern; the measurements either included (PTtot) or did not include (PTpost) the second gyrus...
November 3, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29096215/intermittent-theta-burst-stimulation-induces-correlated-changes-in-cortical-and-corticospinal-excitability-in-healthy-older-subjects
#17
Tamara Gedankien, Peter J Fried, Alvaro Pascual-Leone, Mouhsin M Shafi
OBJECTIVE: We studied the correlation between motor evoked potentials (MEPs) and early TMS-evoked EEG potentials (TEPs) from single-pulse TMS before and after intermittent Theta Burst Stimulation (iTBS) to the left primary motor cortex (M1) in 17 healthy older participants. METHODS: TMS was targeted to the hand region of M1 using a MRI-guided navigated brain stimulation system and a figure-of-eight biphasic coil. MEPs were recorded from the right first dorsal interosseous muscle using surface EMG...
September 28, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29094783/surface-based-electrode-localization-and-standardized-regions-of-interest-for-intracranial-eeg
#18
Michael S Trotta, John Cocjin, Emily Whitehead, Srikanth Damera, John H Wittig, Ziad S Saad, Sara K Inati, Kareem A Zaghloul
Intracranial recordings captured from subdural electrodes in patients with drug resistant epilepsy offer clinicians and researchers a powerful tool for examining neural activity in the human brain with high spatial and temporal precision. There are two major challenges, however, to interpreting these signals both within and across individuals. Anatomical distortions following implantation make accurately identifying the electrode locations difficult. In addition, because each implant involves a unique configuration, comparing neural activity across individuals in a standardized manner has been limited to broad anatomical regions such as cortical lobes or gyri...
November 2, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29079492/the-contribution-of-different-prefrontal-cortex-regions-to-recollection-and-familiarity-a-review-of-fmri-data
#19
REVIEW
Francesco Scalici, Carlo Caltagirone, Giovanni Augusto Carlesimo
Dual-process theories of recognition memory sustain that recollection and familiarity reflect different mnemonic processes and rely on separate neural substrates that are located primarily in the medial temporal lobe (MTL). Aggleton and Brown's model (1999) assumes that this distinction extends to other brain regions, including the thalamus, and that both recognition memory processes interact with the prefrontal cortex (PFC). Nevertheless, it is still unclear whether recollection and familiarity are subtended by separate prefrontal regions...
October 25, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29063584/structural-brain-abnormalities-in-genetic-generalized-epilepsies-a-systematic-review-and-meta-analysis
#20
REVIEW
Shauni Nuyts, Wendyl D'Souza, Stephen C Bowden, Simon J Vogrin
According to the International League Against Epilepsy (ILAE) definition, no structural abnormalities are present on a standard brain magnetic resonance image in genetic generalized epilepsy (GGE) patients. However, recent studies raise contradictory evidence with increasing use of quantitative magnetic resonance imaging techniques. Following PRISMA guidelines, a systematic, quantitative review was conducted using 28 peer-reviewed, case-control studies published after 1989. Furthermore, a meta-analysis with a random-effect model revealed differences in structural brain abnormalities between GGE patients and controls...
October 24, 2017: Epilepsia
keyword
keyword
99805
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"