Ravi Bansal

Summary

Affiliation: Columbia University
Country: USA

Publications

  1. ncbi request reprint The effects of changing water content, relaxation times, and tissue contrast on tissue segmentation and measures of cortical anatomy in MR images
    Ravi Bansal
    Department of Psychiatry, Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, NY 10032 Electronic address
    Magn Reson Imaging 31:1709-30. 2013
  2. pmc Anatomical brain images alone can accurately diagnose chronic neuropsychiatric illnesses
    Ravi Bansal
    Department of Psychiatry, Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, New York, USA
    PLoS ONE 7:e50698. 2012
  3. pmc Hippocampus and amygdala morphology in attention-deficit/hyperactivity disorder
    Kerstin J Plessen
    Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, NY 10032, USA
    Arch Gen Psychiatry 63:795-807. 2006
  4. pmc Calculation of the confidence intervals for transformation parameters in the registration of medical images
    Ravi Bansal
    Department of Psychiatry, Columbia University, New York, NY 10032, USA
    Med Image Anal 13:215-33. 2009
  5. pmc Unifying the analyses of anatomical and diffusion tensor images using volume-preserved warping
    Dongrong Xu
    MRI Unit, College of Physicians and Surgeons, Columbia University Medical Center, Columbia University, New York, New York, USA
    J Magn Reson Imaging 25:612-24. 2007
  6. doi request reprint Multimodal magnetic resonance imaging: The coordinated use of multiple, mutually informative probes to understand brain structure and function
    Xuejun Hao
    Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, New York, New York, USA
    Hum Brain Mapp 34:253-71. 2013
  7. pmc Morphologic features of the amygdala and hippocampus in children and adults with Tourette syndrome
    Bradley S Peterson
    Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, 1051 Riverside Dr, Unit 74, New York, NY 10032, USA
    Arch Gen Psychiatry 64:1281-91. 2007
  8. doi request reprint Techniques for in utero, longitudinal MRI of fetal brain development in baboons at 3T
    Feng Liu
    Department of Psychiatry, Columbia University Medical Center, New York, NY 10032, USA
    Methods 50:147-56. 2010
  9. ncbi request reprint Neuropsychological near normality and brain structure abnormality in schizophrenia
    Bruce E Wexler
    Department of Psychiatry, Yale University School of Medicine, Connecticut Mental Health Center, 34 Park St, New Haven, CT 06519, USA
    Am J Psychiatry 166:189-95. 2009
  10. pmc Seamless warping of diffusion tensor fields
    Dongrong Xu
    MRI Unit, Columbia University Department of Psychiatry, and New York State Psychiatric Institute, Unit 74, New York, NY 10032, USA
    IEEE Trans Med Imaging 27:285-99. 2008

Collaborators

Detail Information

Publications38

  1. ncbi request reprint The effects of changing water content, relaxation times, and tissue contrast on tissue segmentation and measures of cortical anatomy in MR images
    Ravi Bansal
    Department of Psychiatry, Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, NY 10032 Electronic address
    Magn Reson Imaging 31:1709-30. 2013
    ....
  2. pmc Anatomical brain images alone can accurately diagnose chronic neuropsychiatric illnesses
    Ravi Bansal
    Department of Psychiatry, Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, New York, USA
    PLoS ONE 7:e50698. 2012
    ....
  3. pmc Hippocampus and amygdala morphology in attention-deficit/hyperactivity disorder
    Kerstin J Plessen
    Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, NY 10032, USA
    Arch Gen Psychiatry 63:795-807. 2006
    ....
  4. pmc Calculation of the confidence intervals for transformation parameters in the registration of medical images
    Ravi Bansal
    Department of Psychiatry, Columbia University, New York, NY 10032, USA
    Med Image Anal 13:215-33. 2009
    ..Thus, our method precisely quantified confidence in the registration of images that contain varying amounts of misregistration and varying anatomy across individuals...
  5. pmc Unifying the analyses of anatomical and diffusion tensor images using volume-preserved warping
    Dongrong Xu
    MRI Unit, College of Physicians and Surgeons, Columbia University Medical Center, Columbia University, New York, New York, USA
    J Magn Reson Imaging 25:612-24. 2007
    ....
  6. doi request reprint Multimodal magnetic resonance imaging: The coordinated use of multiple, mutually informative probes to understand brain structure and function
    Xuejun Hao
    Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, New York, New York, USA
    Hum Brain Mapp 34:253-71. 2013
    ....
  7. pmc Morphologic features of the amygdala and hippocampus in children and adults with Tourette syndrome
    Bradley S Peterson
    Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, 1051 Riverside Dr, Unit 74, New York, NY 10032, USA
    Arch Gen Psychiatry 64:1281-91. 2007
    ....
  8. doi request reprint Techniques for in utero, longitudinal MRI of fetal brain development in baboons at 3T
    Feng Liu
    Department of Psychiatry, Columbia University Medical Center, New York, NY 10032, USA
    Methods 50:147-56. 2010
    ..In conclusion, in utero MRI of fetal baboon brains greatly enhances the use of nonhuman primate models to study fetal brain development longitudinally...
  9. ncbi request reprint Neuropsychological near normality and brain structure abnormality in schizophrenia
    Bruce E Wexler
    Department of Psychiatry, Yale University School of Medicine, Connecticut Mental Health Center, 34 Park St, New Haven, CT 06519, USA
    Am J Psychiatry 166:189-95. 2009
    ....
  10. pmc Seamless warping of diffusion tensor fields
    Dongrong Xu
    MRI Unit, Columbia University Department of Psychiatry, and New York State Psychiatric Institute, Unit 74, New York, NY 10032, USA
    IEEE Trans Med Imaging 27:285-99. 2008
    ..Once the bijection has been achieved and tensors have been correctly relocated to the template space, we can appropriately reorient tensors in the template space using a warping method based on Procrustean estimation...
  11. pmc Using Perturbation theory to reduce noise in diffusion tensor fields
    Ravi Bansal
    Department of Psychiatry, Columbia University, New York, NY 10032, USA
    Med Image Anal 13:580-97. 2009
    ....
  12. pmc The ellipsoidal area ratio: an alternative anisotropy index for diffusion tensor imaging
    Dongrong Xu
    MRI Unit, Department of Psychiatry, New York State Psychiatric Institute, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
    Magn Reson Imaging 27:311-23. 2009
    ....
  13. doi request reprint Enlargement of thalamic nuclei in Tourette syndrome
    Ann M Miller
    Department of Psychiatry, New York State Psychiatric Institute, Columbia University, New York, USA
    Arch Gen Psychiatry 67:955-64. 2010
    ..Previous imaging studies have shown modifications of the basal ganglia and cortical targets in individuals with Tourette syndrome (TS), but less is known regarding the role of the thalamus in TS pathogenesis...
  14. pmc Sex, age, and cognitive correlates of asymmetries in thickness of the cortical mantle across the life span
    Kerstin J Plessen
    Center for Child and Adolescent Mental Health, Capital Region Psychiatry, Denmark, Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Denmark, Department of Clinical Medicine, Faculty of Medicine and Odontology, University of Bergen, Norway, Department of Biological and Medical Psychology, University of Bergen, Norway, Division of Psychiatry and the BMH Centre, Haukeland University Hospital, Bergen, Norway, Department of Radiology, Haukeland University Hospital, Bergen, Norway, Center for Developmental Neuropsychiatry, Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, New York 10032, and New York State Psychiatric Institute, New York, New York 10032
    J Neurosci 34:6294-302. 2014
    ..Finally, measures of performance on working memory and vocabulary tasks improved with increasing magnitudes of normal asymmetries in regions thought to support these cognitive capacities. ..
  15. pmc Anatomical abnormalities in gray and white matter of the cortical surface in persons with schizophrenia
    Tiziano Colibazzi
    Division of Child and Adolescent Psychiatry, The New York State Psychiatric Institute, Columbia College of Physicians and Surgeons, New York, New York, United States of America
    PLoS ONE 8:e55783. 2013
    ..Furthermore, we aimed to clarify the contribution of abnormalities in cortical thickness and cortical surface area to the reduced GM volumes reported in schizophrenia...
  16. pmc Identification of a circuit-based endophenotype for familial depression
    Marc J Dubin
    The New York State Psychiatric Institute, New York, NY 10032, USA
    Psychiatry Res 201:175-81. 2012
    ..These findings support a model of pathogenesis in which hypoplasia within a neural network for attention and emotional processing predisposes to depression...
  17. doi request reprint Automated artifact detection and removal for improved tensor estimation in motion-corrupted DTI data sets using the combination of local binary patterns and 2D partial least squares
    Zhenyu Zhou
    MRI Unit, Department of Psychiatry, Columbia University, New York, NY 10032, USA
    Magn Reson Imaging 29:230-42. 2011
    ..g., the bootstrapping estimation) that use univariate or multivariate regression methods to fit MRI data to a pre-specified model...
  18. pmc Statistical analyses of brain surfaces using Gaussian random fields on 2-D manifolds
    Ravi Bansal
    New York State Psychiatric Institute, New York, NY 10032, USA
    IEEE Trans Med Imaging 26:46-57. 2007
    ....
  19. doi request reprint Cerebellar morphology in Tourette syndrome and obsessive-compulsive disorder
    Russell H Tobe
    Columbia College of Physicians and Surgeons, New York State Psychiatric Institute, New York, NY 10032, USA
    Ann Neurol 67:479-87. 2010
    ..Few studies, however, have investigated the role of the cerebellum in Tourette syndrome (TS), a condition defined by the presence of semi-involuntary movements and sounds...
  20. pmc Study of the development of fetal baboon brain using magnetic resonance imaging at 3 Tesla
    Feng Liu
    Department of Psychiatry, New York State Psychiatric Institute, Columbia University Medical Center, 1051 Riverside Drive, New York, NY 10032, USA
    Neuroimage 40:148-59. 2008
    ..This protocol for in utero MRI of fetal baboon brains will help to advance the use of nonhuman primate models to study fetal brain development longitudinally...
  21. pmc Neuroanatomical correlates of religiosity and spirituality: a study in adults at high and low familial risk for depression
    Lisa Miller
    Teachers College, Columbia University, New York, New York2Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, New York
    JAMA Psychiatry 71:128-35. 2014
    ....
  22. pmc Correlates of intellectual ability with morphology of the hippocampus and amygdala in healthy adults
    Jose A Amat
    The Division of Child Psychiatry in the Department of Psychiatry, Columbia College of Physicians and Surgeons and the New York State Psychiatric Institute, New York, NY 10032, USA
    Brain Cogn 66:105-14. 2008
    ..These findings suggest that a smaller anterior hippocampus contributes to an increased efficiency of neural processing that subserves overall intelligence...
  23. doi request reprint Basal ganglia surface morphology and the effects of stimulant medications in youth with attention deficit hyperactivity disorder
    Loren J Sobel
    Department of Psychiatry, New York State Psychiatric Institute and the College of Physicians and Surgeons, Columbia University, 1051 Riverside Drive, New York, NY 10032, USA
    Am J Psychiatry 167:977-86. 2010
    ..The authors examined the morphologic features of the basal ganglia nuclei (caudate, putamen, and globus pallidus) in children with ADHD...
  24. pmc Correction of eddy-current distortions in diffusion tensor images using the known directions and strengths of diffusion gradients
    Jiancheng Zhuang
    Magnetic Resonance Imaging Unit, Department of Psychiatry, Columbia College of Physicians and Surgeons, New York, New York, USA
    J Magn Reson Imaging 24:1188-93. 2006
    ..To correct eddy-current artifacts in diffusion tensor (DT) images without the need to obtain auxiliary scans for the sole purpose of correction...
  25. pmc A statistical framework for the classification of tensor morphologies in diffusion tensor images
    Hongtu Zhu
    MRI Unit, Department of Psychiatry, Columbia University Medical Center, USA
    Magn Reson Imaging 24:569-82. 2006
    ..We also show that the P values for test statistics are more sensitive tools for classifying tensor morphologies than are invariant measures of anisotropy alone...
  26. pmc Voxel-wise comparisons of the morphology of diffusion tensors across groups of experimental subjects
    Ravi Bansal
    New York State Psychiatric Institute, New York, NY 10032, USA
    Psychiatry Res 156:225-45. 2007
    ..Finally, analyses of in vivo DT data using our method reveal significant between-group differences in diffusivity along fiber tracts within white matter, whereas analyses based on FA values failed to detect some of these differences...
  27. pmc Relationship of resting EEG with anatomical MRI measures in individuals at high and low risk for depression
    Gerard E Bruder
    Department of Psychiatry, Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, New York, New York 10032, USA
    Hum Brain Mapp 33:1325-33. 2012
    ..Thus, alpha asymmetry, alone or in combination with MRI, may be a marker of vulnerability for a familial form of depression...
  28. ncbi request reprint Automated assessment of the quality of diffusion tensor imaging data using color cast of color-encoded fractional anisotropy images
    Xiaofu He
    Center for Developmental Neuropsychiatry, Department of Psychiatry, Columbia University and New York State Psychiatric Institute, New York, NY 10032, USA
    Magn Reson Imaging 32:446-56. 2014
    ..Experimental results using DTI data acquired from neonates verified that this proposed method is rapid and accurate. The method thus provides a new tool for real-time quality assurance for DTI data...
  29. pmc Cortical thinning in persons at increased familial risk for major depression
    Bradley S Peterson
    Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, 1051 Riverside Drive, New York, NY 10032, USA
    Proc Natl Acad Sci U S A 106:6273-8. 2009
    ..These findings suggest that cortical thinning in the right hemisphere produces disturbances in arousal, attention, and memory for social stimuli, which in turn may increase the risk of developing depressive illness...
  30. pmc Using IQ discrepancy scores to examine the neural correlates of specific cognitive abilities
    Amy Margolis
    Center for Developmental Neuropsychiatry, Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA
    J Neurosci 33:14135-45. 2013
    ..The degree of hemispheric asymmetry in cortical thickness accounted for a much smaller but statistically significant portion of variance in VIQ-PIQ discrepancy...
  31. pmc Latent volumetric structure of the human brain: Exploratory factor analysis and structural equation modeling of gray matter volumes in healthy children and adults
    Tiziano Colibazzi
    The New York State Psychiatric Institute and Columbia College of Physician and Surgeons, New York, New York 10032, USA
    Hum Brain Mapp 29:1302-12. 2008
    ..These modeling techniques may prove useful in the future for the study of structural networks in disease populations...
  32. pmc Brain anomalies in children exposed prenatally to a common organophosphate pesticide
    Virginia A Rauh
    Heilbrunn Center for Population and Family Health, Columbia University, New York, NY 10032, USA
    Proc Natl Acad Sci U S A 109:7871-6. 2012
    ..This study reports significant associations of prenatal exposure to a widely used environmental neurotoxicant, at standard use levels, with structural changes in the developing human brain...
  33. ncbi request reprint Age, rapid-cycling, and pharmacotherapy effects on ventral prefrontal cortex in bipolar disorder: a cross-sectional study
    Hilary P Blumberg
    Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut 06511, USA
    Biol Psychiatry 59:611-8. 2006
    ..However, the developmental trajectory of VPFC morphological abnormalities in BD is unknown. This study investigated potential age-dependent volume abnormalities in VPFC in BD...
  34. ncbi request reprint ROC-based assessments of 3D cortical surface-matching algorithms
    Ravi Bansal
    New York State Psychiatric Institute, New York, NY 10032, USA
    Neuroimage 24:150-62. 2005
    ..The GD and NN algorithms, moreover, are both vulnerable to detecting false-positive activations at points of high curvature, particularly along large fissures, cisterns, and cortical sulci...
  35. doi request reprint Annual research review: progress in using brain morphometry as a clinical tool for diagnosing psychiatric disorders
    Alexander Haubold
    Columbia College of Physicians and Surgeons and New York State Psychiatric Institute, New York, NY, USA
    J Child Psychol Psychiatry 53:519-35. 2012
    ..Although these methods have not yet been applied within clinical settings, they provide strong evidence that individual patients can be diagnosed accurately using the spatial pattern of disturbances across the brain...
  36. pmc Cerebellar morphology and the effects of stimulant medications in youths with attention deficit-hyperactivity disorder
    Iliyan Ivanov
    Division of Child and Adolescent Psychiatry, Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
    Neuropsychopharmacology 39:718-26. 2014
    ..Duration of treatment correlated positively with volumes of specific cerebellar subregions, supporting a model whereby compensatory morphological changes support the effects of stimulant treatment. ..
  37. pmc Cortisol levels and hippocampus volumes in healthy preadolescent children
    Christoph P Wiedenmayer
    Department of Psychiatry, Columbia University, New York, New York 10032, USA
    Biol Psychiatry 60:856-61. 2006
    ..The objective of this study was to examine possible associations of serum cortisol levels with hippocampal volumes and morphology in healthy children...
  38. ncbi request reprint Altered interhemispheric connectivity in individuals with Tourette's disorder
    Kerstin J Plessen
    New York State Psychiatric Institute, 1051 Riverside Dr, Unit 74, New York, NY 10032, USA
    Am J Psychiatry 161:2028-37. 2004
    ..The authors assessed corpus callosum size and anatomical connectivity across the cerebral hemispheres in persons with Tourette's disorder...