keyword
MENU ▼
Read by QxMD icon Read
search

voxel based morphometry

keyword
https://www.readbyqxmd.com/read/29782369/neuroimaging-in-epilepsy
#1
Meneka Kaur Sidhu, John S Duncan, Josemir W Sander
PURPOSE OF REVIEW: Epilepsy neuroimaging is important for detecting the seizure onset zone, predicting and preventing deficits from surgery and illuminating mechanisms of epileptogenesis. An aspiration is to integrate imaging and genetic biomarkers to enable personalized epilepsy treatments. RECENT FINDINGS: The ability to detect lesions, particularly focal cortical dysplasia and hippocampal sclerosis, is increased using ultra high-field imaging and postprocessing techniques such as automated volumetry, T2 relaxometry, voxel-based morphometry and surface-based techniques...
May 17, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29778275/quantifying-the-effects-of-16p11-2-copy-number-variants-on-brain-structure-a-multisite-genetic-first-study
#2
Sandra Martin-Brevet, Borja Rodríguez-Herreros, Jared A Nielsen, Clara Moreau, Claudia Modenato, Anne M Maillard, Aurélie Pain, Sonia Richetin, Aia E Jønch, Abid Y Qureshi, Nicole R Zürcher, Philippe Conus, Wendy K Chung, Elliott H Sherr, John E Spiro, Ferath Kherif, Jacques S Beckmann, Nouchine Hadjikhani, Alexandre Reymond, Randy L Buckner, Bogdan Draganski, Sébastien Jacquemont
BACKGROUND: 16p11.2 breakpoint 4 to 5 copy number variants (CNVs) increase the risk for developing autism spectrum disorder, schizophrenia, and language and cognitive impairment. In this multisite study, we aimed to quantify the effect of 16p11.2 CNVs on brain structure. METHODS: Using voxel- and surface-based brain morphometric methods, we analyzed structural magnetic resonance imaging collected at seven sites from 78 individuals with a deletion, 71 individuals with a duplication, and 212 individuals without a CNV...
March 27, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29777918/sex-differences-in-the-spatial-distribution-of-bone-in-relation-to-incident-hip-fracture-findings-from-the-ages-reykjavik-study
#3
Elisa A Marques, Julio Carballido-Gamio, Vilmundur Gudnason, Gunnar Sigurdsson, Sigurdur Sigurdsson, Thor Aspelund, Kristin Siggeirsdottir, Lenore Launer, Gudny Eiriksdottir, Thomas Lang, Tamara B Harris
In this case-cohort study, we used data-driven computational anatomy approaches to assess within and between sex spatial differences in proximal femoral bone characteristics in relation to incident hip fracture. One hundred male and 234 female incident hip fracture cases, and 1047 randomly selected noncase subcohort participants (562 female) were chosen from the population-based AGES-Reykjavik study (mean age of 77 years). The baseline -i.e. before hip fracture- hip quantitative computed tomography scans of these subjects were analyzed using voxel-based morphometry, tensor-based morphometry, and surface-based statistical parametric mapping to assess the spatial distribution of volumetric bone mineral density (vBMD), internal structure, and cortical bone properties (thickness, vBMD and trabecular vBMD adjacent to the endosteal surface) of the proximal femur, respectively, in relation to incident hip fracture...
May 16, 2018: Bone
https://www.readbyqxmd.com/read/29776018/voxel-based-morphometry-in-creative-writers-gray-matter-increase-in-a-prefronto-thalamic-cerebellar-network
#4
Nicola Neumann, Martin Domin, Katharina Erhard, Martin Lotze
Continuous practice modulates those features of brain anatomy specifically associated with requirements of the respective training task. The current study aimed to highlight brain structural changes going along with long-term experience in creative writing. To this end, we investigated the gray-matter volume of 23 expert writers with voxel-based morphometry and compared it to 28 matched non-expert controls. Expert writers had higher gray-matter volume in the right superior frontal and middle frontal gyri (BA 9,10) as well as left middle frontal gyrus (BA 9, 10, 46), the bilateral medial dorsal nuclei of the thalamus and left posterior cerebellum...
May 18, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29773998/larger-gray-matter-volume-in-the-basal-ganglia-of-heavy-cannabis-users-detected-by-voxel-based-morphometry-and-subcortical-volumetric-analysis
#5
Ana Moreno-Alcázar, Begoña Gonzalvo, Erick J Canales-Rodríguez, Laura Blanco, Diana Bachiller, Anna Romaguera, Gemma C Monté-Rubio, Carlos Roncero, Peter J McKenna, Edith Pomarol-Clotet
Background: Structural imaging studies of cannabis users have found evidence of both cortical and subcortical volume reductions, especially in cannabinoid receptor-rich regions such as the hippocampus and amygdala. However, the findings have not been consistent. In the present study, we examined a sample of adult heavy cannabis users without other substance abuse to determine whether long-term use is associated with brain structural changes, especially in the subcortical regions. Method: We compared the gray matter volume of 14 long-term, heavy cannabis users with non-using controls...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29756356/neuroimaging-abnormalities-in-individuals-exhibiting-parkinson-s-disease-risk-markers
#6
Marcus Heldmann, Janna Heeren, Christine Klein, Linus Rauch, Johann Hagenah, Thomas F Münte, Meike Kasten, Norbert Brüggemann
BACKGROUND: The concept of prodromal Parkinson's disease (PD) involves variable combinations of nonmotor features and subtle motor abnormalities as a result of ongoing neurodegeneration in the brain stem including substantia nigra (SN) and abnormal findings upon transcranial sonography and nuclear imaging. Except for nuclear imaging, the predictive value of risk markers for the conversion to overt PD is low. OBJECTIVE: The objective of this study was to determine whether PD risk markers are associated with changes in brain structure and to what extent cognitive changes are risk markers for PD...
May 14, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29755611/morphological-biomarker-differentiating-mci-converters-from-nonconverters-longitudinal-evidence-based-on-hemispheric-asymmetry
#7
Xiaojing Long, Chunxiang Jiang, Lijuan Zhang
Identifying subjects with mild cognitive impairment (MCI) who may probably progress to Alzheimer's disease (AD) is important for better understanding the disease mechanisms and facilitating early treatments. In addition to the direct volumetric and thickness measurement based on high-resolution magnetic resonance imaging (MRI), hemispheric asymmetry could be a potential index to detect morphological variations in MCI patients with a high risk of conversion to AD. The present study collected a set of longitudinal MRI data from 53 MCI converters and nonconverters and investigated the asymmetry differences between groups...
2018: Behavioural Neurology
https://www.readbyqxmd.com/read/29755373/bidirectional-causal-connectivity-in-the-cortico-limbic-cerebellar-circuit-related-to-structural-alterations-in-first-episode-drug-naive-somatization-disorder
#8
Ranran Li, Feng Liu, Qinji Su, Zhikun Zhang, Jin Zhao, Ying Wang, Renrong Wu, Jingping Zhao, Wenbin Guo
Background: Anatomical and functional deficits in the cortico-limbic-cerebellar circuit are involved in the neurobiology of somatization disorder (SD). The present study was performed to examine causal connectivity of the cortico-limbic-cerebellar circuit related to structural deficits in first-episode, drug-naive patients with SD at rest. Methods: A total of 25 first-episode, drug-naive patients with SD and 28 healthy controls underwent structural and resting-state functional magnetic resonance imaging. Voxel-based morphometry and Granger causality analysis (GCA) were used to analyze the data...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29754151/a-voxel-based-magnetic-resonance-imaging-morphometric-study-of-cerebral-and-cerebellar-gray-matter-in-patients-under-65-years-with-essential-tremor
#9
Hongmei Cao, Rong Wang, Xue Luo, Xianjun Li, Mark Hallett, Johanna Thompson-Westra, Jian Yang, Qiumin Qu, Xiaobo Yang
BACKGROUND The aim of this study was to compare the morphological changes in cerebral and cerebellar gray matter in patients with essential tremor under 60-years-of-age, with age-matched and gender-matched normal healthy volunteer control subjects, using functional magnetic resonance imaging (fMRI) and voxel-based morphometry (VBM) analysis. MATERIAL AND METHODS A retrospective, controlled, comparative clinical study included 17 patients with essential tremor, <60 years-of-age, and 17 age-matched and gender-matched healthy volunteer control subjects, recruited between June 2010-July 2012...
May 13, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29748773/preliminary-evidence-of-altered-gray-matter-volume-in-subjects-with-internet-gaming-disorder-associations-with-history-of-childhood-attention-deficit-hyperactivity-disorder-symptoms
#10
Deokjong Lee, Kee Namkoong, Junghan Lee, Young-Chul Jung
Attention-deficit/hyperactivity disorder (ADHD) is commonly comorbid with Internet gaming disorder (IGD). Although childhood ADHD symptoms may decline during late brain maturation, structural alterations in some brain areas may persist into adulthood. This study investigated whether young adults with IGD and a history of childhood ADHD symptoms had gray matter volume (GMV) alterations that were distinct from subjects without a history of childhood ADHD. As an exploratory investigation, we conducted a whole-brain voxel-based morphometry with the diffeomorphic anatomical registration using an exponentiated Lie algebra algorithm and applied an uncorrected threshold at the voxel level for multiple comparisons...
May 11, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29744917/error-introduced-by-common-reorientation-algorithms-in-the-assessment-of-rodent-trabecular-morphometry-using-micro-computed-tomography
#11
Michael D Newton, Samantha Hartner, Karissa Gawronski, Tristan Maerz
Quantitative analyses of bone using micro-computed tomography (µCT) are routinely employed in preclinical research, and virtual image reorientation to a consistent reference frame is a common processing step. The purpose of this study was to quantify error introduced by common reorientation algorithms in µCT-based characterization of bone. Mouse and rat tibial metaphyses underwent µCT scanning at a range of resolutions (6-30 µm). A trabecular volume-of-interest (VOI) was manually selected. Image stacks were analyzed without rotation, following 45° In-Plane axial rotation, and following 45° Triplanar rotation...
May 10, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29744798/the-effect-of-future-time-perspective-on-procrastination-the-role-of-parahippocampal-gyrus-and-ventromedial-prefrontal-cortex
#12
Peiwei Liu, Tingyong Feng
Procrastination is an almost universal affliction, which occurs across culture and brings serious consequences across multiple fields, such as finance, health and education. Previous research has showed procrastination can be influenced by future time perspective (FTP). However, little is known about the neural basis underlying the impact of FTP on procrastination. To address this question, we used voxel-based morphometry (VBM) based on brain structure. In line with previous findings, the behavioral result indicated that FTP inventory scores were significantly negatively correlated with procrastination inventory scores (r = -0...
May 9, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29740296/distinguishing-adolescents-with-conduct-disorder-from-typically-developing-youngsters-based-on-pattern-classification-of-brain-structural-mri
#13
Jianing Zhang, Weixiang Liu, Jing Zhang, Qiong Wu, Yidian Gao, Yali Jiang, Junling Gao, Shuqiao Yao, Bingsheng Huang
Background: Conduct disorder (CD) is a mental disorder diagnosed in childhood or adolescence that presents antisocial behaviors, and is associated with structural alterations in brain. However, whether these structural alterations can distinguish CD from healthy controls (HCs) remains unknown. Here, we quantified these structural differences and explored the classification ability of these quantitative features based on machine learning (ML). Materials and Methods: High-resolution 3D structural magnetic resonance imaging (sMRI) was acquired from 60 CD subjects and 60 age-matched HCs...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29734343/combining-gray-matter-volume-in-the-cuneus-and-the-cuneus-prefrontal-connectivity-may-predict-early-relapse-in-abstinent-alcohol-dependent-patients
#14
Junkai Wang, Yunli Fan, Yue Dong, Mengying Ma, Yuru Dong, Yajuan Niu, Yin Jiang, Hong Wang, Zhiyan Wang, Liuzhen Wu, Hongqiang Sun, Cailian Cui
BACKGROUND: Developing more effective strategies to prevent relapse remains one of the major challenges of treating substance dependence. Previous studies have identified brain abnormalities in abstinent alcoholics. However, whether these persistent brain deficits in abstinence could predict early relapse to alcohol use has not been well established. This study aimed to identify biomarkers of relapse vulnerability by investigating persistent brain abnormalities in abstinent alcohol-dependent patients...
2018: PloS One
https://www.readbyqxmd.com/read/29727807/voxel-based-morphometry-analysis-of-structural-brain-scans-in-skin-picking-disorder
#15
Anne Schienle, Jonas Potthoff, Albert Wabnegger
BACKGROUND: Skin-picking disorder (SPD) is characterized by the excessive and repetitive manipulation of one's own skin resulting in tissue damage and impaired social functioning. There are only a few studies with small sample sizes that examined possible brain abnormalities in SPD, which is classified as a syndrome related to obsessive-compulsive disorders (OCD). METHOD: The current voxel-based morphometry (VBM) study compared data from 35 SPD patients and 35 control participants including both genders (mean age = 35 years, SD = 15)...
April 26, 2018: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/29727625/beyond-volume-a-surface-based-approach-to-bilingualism-induced-grey-matter-changes
#16
Sini Hämäläinen, Juho Joutsa, Aleksi J Sihvonen, Alina Leminen, Minna Lehtonen
Bilingualism is a sustained experience associated with structural changes in cortical grey matter (GM) morphology. Apart from a few studies, a dominant method used to assess bilingualism-induced GM changes has been the voxel-based morphometry (VBM) analysis. While VBM is sensitive to GM volume/density differences in general, it cannot be used to identify whether the observed difference is due to relative changes in, e.g., cortical thickness, area or folding, as it uses a single combined measure of them all...
May 1, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29723600/cognitive-training-with-action-related-verbs-induces-neural-plasticity-in-the-action-representation-system-as-assessed-by-gray-matter-brain-morphometry
#17
Marta Ghio, Matteo Locatelli, Andrea Tettamanti, Daniela Perani, Roberto Gatti, Marco Tettamanti
Embodied cognition theories of semantic memory still face the need for multiple sources of converging evidence in support of the involvement of sensory-motor systems in action-related knowledge. Previous studies showed that training manual actions improves semantic processing of verbs referring to the trained actions. The present work aimed to provide complementary evidence by measuring the brain plasticity effects of a cognitive training requiring sustained lexical-semantic processing of action-related verbs...
April 30, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29717540/brainmap-vbm-an-environment-for-structural-meta-analysis
#18
Thomas J Vanasse, P Mickle Fox, Daniel S Barron, Michaela Robertson, Simon B Eickhoff, Jack L Lancaster, Peter T Fox
The BrainMap database is a community resource that curates peer-reviewed, coordinate-based human neuroimaging literature. By pairing the results of neuroimaging studies with their relevant meta-data, BrainMap facilitates coordinate-based meta-analysis (CBMA) of the neuroimaging literature en masse or at the level of experimental paradigm, clinical disease, or anatomic location. Initially dedicated to the functional, task-activation literature, BrainMap is now expanding to include voxel-based morphometry (VBM) studies in a separate sector, titled: BrainMap VBM...
May 2, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29707531/morphometric-magnetic-resonance-imaging-study-in-children-with-primary-monosymptomatic-nocturnal-enuresis
#19
Mengxing Wang, Anyi Zhang, Jilei Zhang, Haifeng Lu, Shuai Xu, Zhaoxia Qin, Jun Ma, Xiaoxia Du
Objective: Primary monosymptomatic nocturnal enuresis (PMNE) refers to bed-wetting in children who have no other lower urinary tract symptoms and are never dry for more than 6 months. Our previous studies demonstrated that children with PMNE exhibited brain functional abnormalities compared with healthy controls; however, researches on the abnormalities in gray matter were limited. This study aimed to investigate brain structural changes in gray matter of children with PMNE using magnetic resonance imaging (MRI)...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29704671/apathy-in-alzheimer-s-disease-and-frontotemporal-dementia-distinct-clinical-profiles-and-neural-correlates
#20
Fiona Kumfor, Alice Zhen, John R Hodges, Olivier Piguet, Muireann Irish
OBJECTIVE: Apathy is the most prevalent and disabling non-cognitive symptom of dementia and affects 90% of patients across the disease course. Despite its pervasiveness, how apathy manifests across dementia syndromes and the neurobiological mechanisms driving these symptoms are poorly understood. Here, we applied the multidimensional ABC model of apathy, which recognizes Affective, Behavioural and Cognitive apathy, in Alzheimer's disease (AD) and behavioural-variant frontotemporal dementia (bvFTD)...
March 29, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
keyword
keyword
78550
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"