Anqi Qiu

Summary

Affiliation: Johns Hopkins University
Country: USA

Publications

  1. pmc Region-of-interest-based analysis with application of cortical thickness variation of left planum temporale in schizophrenia and psychotic bipolar disorder
    Anqi Qiu
    Center for Imaging Science, Johns Hopkins University, Baltimore, Maryland, USA
    Hum Brain Mapp 29:973-85. 2008
  2. ncbi request reprint Estimating linear cortical magnification in human primary visual cortex via dynamic programming
    Anqi Qiu
    Center for Imaging Science, Johns Hopkins University, Baltimore, MD 21218, USA
    Neuroimage 31:125-38. 2006
  3. ncbi request reprint Smooth functional and structural maps on the neocortex via orthonormal bases of the Laplace-Beltrami operator
    Anqi Qiu
    Department of Electrical and Computer Engineering, Center for Imaging Science, The Johns Hopkins University, Baltimore, MD 21218, USA
    IEEE Trans Med Imaging 25:1296-306. 2006
  4. ncbi request reprint Combining anatomical manifold information via diffeomorphic metric mappings for studying cortical thinning of the cingulate gyrus in schizophrenia
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore 117576
    Neuroimage 37:821-33. 2007
  5. pmc Diffeomorphic metric surface mapping in subregion of the superior temporal gyrus
    Marc Vaillant
    Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
    Neuroimage 34:1149-59. 2007
  6. pmc Atlas generation for subcortical and ventricular structures with its applications in shape analysis
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore 117576
    IEEE Trans Image Process 19:1539-47. 2010
  7. pmc Cortical hemisphere registration via large deformation diffeomorphic metric curve mapping
    Anqi Qiu
    Division of Bioengineering, National University of Singapore
    Med Image Comput Comput Assist Interv 10:186-93. 2007
  8. pmc Neuroanatomical asymmetry patterns in individuals with schizophrenia and their non-psychotic siblings
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 47:1221-9. 2009
  9. pmc Collaborative computational anatomy: an MRI morphometry study of the human brain via diffeomorphic metric mapping
    Michael I Miller
    Center for Imaging Science, The Johns Hopkins University, Baltimore, MD 21218, USA
    Hum Brain Mapp 30:2132-41. 2009
  10. doi request reprint Hippocampal-cortical structural connectivity disruptions in schizophrenia: an integrated perspective from hippocampal shape, cortical thickness, and integrity of white matter bundles
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 52:1181-9. 2010

Detail Information

Publications34

  1. pmc Region-of-interest-based analysis with application of cortical thickness variation of left planum temporale in schizophrenia and psychotic bipolar disorder
    Anqi Qiu
    Center for Imaging Science, Johns Hopkins University, Baltimore, Maryland, USA
    Hum Brain Mapp 29:973-85. 2008
    ..Moreover, there may be a greater thickness variation in the left PT in psychotic bipolar patients when compared with that in schizophrenic patients...
  2. ncbi request reprint Estimating linear cortical magnification in human primary visual cortex via dynamic programming
    Anqi Qiu
    Center for Imaging Science, Johns Hopkins University, Baltimore, MD 21218, USA
    Neuroimage 31:125-38. 2006
    ..The reliability of these estimates was assessed by comparing results based on data from one quadrant to those based on data from the full hemifield along with a split-half reliability analysis...
  3. ncbi request reprint Smooth functional and structural maps on the neocortex via orthonormal bases of the Laplace-Beltrami operator
    Anqi Qiu
    Department of Electrical and Computer Engineering, Center for Imaging Science, The Johns Hopkins University, Baltimore, MD 21218, USA
    IEEE Trans Med Imaging 25:1296-306. 2006
    ..We present applications of our approach to smoothing sulcal mean curvature, cortical thickness, and functional statistical maps on submanifolds of the neocortex...
  4. ncbi request reprint Combining anatomical manifold information via diffeomorphic metric mappings for studying cortical thinning of the cingulate gyrus in schizophrenia
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore 117576
    Neuroimage 37:821-33. 2007
    ..Subjects with schizophrenia had non-uniform cortical thinning over the left and right cingulate gyri, especially in the anterior portion, as compared to healthy comparison subjects...
  5. pmc Diffeomorphic metric surface mapping in subregion of the superior temporal gyrus
    Marc Vaillant
    Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
    Neuroimage 34:1149-59. 2007
    ..The results demonstrate that both the positional and shape variability of the anatomical configurations are being represented by the diffeomorphic maps...
  6. pmc Atlas generation for subcortical and ventricular structures with its applications in shape analysis
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore 117576
    IEEE Trans Image Process 19:1539-47. 2010
    ..In shape-based classification, the metric distances between subjects and each of within-class estimated atlases construct a shape feature space, which allows for performing a variety of classification algorithms to distinguish anatomies...
  7. pmc Cortical hemisphere registration via large deformation diffeomorphic metric curve mapping
    Anqi Qiu
    Division of Bioengineering, National University of Singapore
    Med Image Comput Comput Assist Interv 10:186-93. 2007
    ..We showed global cortical hemisphere matching and evaluated the mapping accuracy in five subregions of the cortex in fourteen MRI scans...
  8. pmc Neuroanatomical asymmetry patterns in individuals with schizophrenia and their non-psychotic siblings
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 47:1221-9. 2009
    ..These altered patterns of asymmetries are present in subjects with schizophrenia and their siblings, and therefore may represent a schizophrenia-related endophenotype...
  9. pmc Collaborative computational anatomy: an MRI morphometry study of the human brain via diffeomorphic metric mapping
    Michael I Miller
    Center for Imaging Science, The Johns Hopkins University, Baltimore, MD 21218, USA
    Hum Brain Mapp 30:2132-41. 2009
    ..05). Such large scale collaborative analysis of anatomical shapes has the potential to enhance the understanding of neurodevelopmental and neuropsychiatric disorders...
  10. doi request reprint Hippocampal-cortical structural connectivity disruptions in schizophrenia: an integrated perspective from hippocampal shape, cortical thickness, and integrity of white matter bundles
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 52:1181-9. 2010
    ..Our findings suggested that aberrant structural hippocampal-cortical connectivities may serve as a marker of the illness and provide further structural evidence to support the notion of schizophrenia as a disorder of brain connectivity...
  11. pmc Correction of B0 susceptibility induced distortion in diffusion-weighted images using large-deformation diffeomorphic metric mapping
    Hao Huang
    Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
    Magn Reson Imaging 26:1294-302. 2008
    ..This postprocessing method is especially useful for correcting existent DTI data without phase maps...
  12. doi request reprint Multi-structure network shape analysis via normal surface momentum maps
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 42:1430-8. 2008
    ....
  13. pmc Surface-based analysis on shape and fractional anisotropy of white matter tracts in Alzheimer's disease
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore, Singapore
    PLoS ONE 5:e9811. 2010
    ..Diffusion tensor imaging (DTI), which has been widely used in AD studies, obtains new insights into the white matter structure...
  14. ncbi request reprint A stochastic model for studying the laminar structure of cortex from MRI
    Patrick Barta
    Center for Imaging Science, The Johns Hopkins University, Clark Hall 301, 3400 N Charles Street, Baltimore, MD 21218 USA
    IEEE Trans Med Imaging 24:728-42. 2005
    ....
  15. ncbi request reprint Large deformation diffeomorphic metric mapping of orientation distribution functions
    Jia Du
    Division of Bioengineering, National University of Singapore, Singapore
    Inf Process Med Imaging 22:448-62. 2011
    ..Both synthetic and real brain HARDI data are used to illustrate the performance of our registration algorithm...
  16. pmc Parallel transport in diffeomorphisms distinguishes the time-dependent pattern of hippocampal surface deformation due to healthy aging and the dementia of the Alzheimer's type
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, 7 Engineering Drive 1, Singapore, Singapore
    Neuroimage 40:68-76. 2008
    ..77 and 0.87, which were obtained in the same training set using the leave-one-out cross validation approach...
  17. pmc APOE related hippocampal shape alteration in geriatric depression
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 44:620-6. 2009
    ..Thus, hippocampal shape abnormalities in late-onset depressed patients with one apoE E4 may indicate future conversion of this group to AD at higher risk than depressed patients without the apoE E4...
  18. ncbi request reprint Intrinsic and extrinsic analysis in computational anatomy
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 39:1803-14. 2008
    ..Both methods show that the left cingulate gyrus tends to become thinner in schizophrenia relative to the healthy control population. However, the intrinsic method increases the statistical power...
  19. pmc Arcuate fasciculus abnormalities and their relationship with psychotic symptoms in schizophrenia
    Muhammad Farid Abdul-Rahman
    Division of Bioengineering, National University of Singapore, Singapore
    PLoS ONE 7:e29315. 2012
    ....
  20. ncbi request reprint Approximations of the diffeomorphic metric and their applications in shape learning
    Xianfeng Yang
    Division of Bioengineering, National University of Singapore, Singapore
    Inf Process Med Imaging 22:257-70. 2011
    ..Our results demonstrate that the first- and second-order approximations are sufficient to characterize shape variations when compared to the diffeomorphic metric constructed through (2(N)) mappings in ISOMAP analysis...
  21. doi request reprint Diffeomorphic metric mapping of high angular resolution diffusion imaging based on Riemannian structure of orientation distribution functions
    Jia Du
    Division of Bioengineering, National University of Singapore, Singapore
    IEEE Trans Med Imaging 31:1021-33. 2012
    ..Both synthetic and real brain HARDI data are used to illustrate the performance of our registration algorithm...
  22. pmc The emerging discipline of Computational Functional Anatomy
    Michael I Miller
    Center for Imaging Science, Johns Hopkins University, Baltimore, MD 21218, USA
    Neuroimage 45:S16-39. 2009
    ....
  23. pmc Basal ganglia volume and shape in children with attention deficit hyperactivity disorder
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, 7 Engineering Dr 1, Block E3A 04 15, Singapore
    Am J Psychiatry 166:74-82. 2009
    ..To specify localization of these abnormalities, large deformation diffeomorphic metric mapping (LDDMM) was used to examine the effects of ADHD, sex, and their interaction on basal ganglia shapes...
  24. doi request reprint Locally Linear Diffeomorphic Metric Embedding (LLDME) for surface-based anatomical shape modeling
    Xianfeng Yang
    Division of Bioengineering, National University of Singapore, Singapore, Singapore
    Neuroimage 56:149-61. 2011
    ....
  25. pmc Time sequence diffeomorphic metric mapping and parallel transport track time-dependent shape changes
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 45:S51-60. 2009
    ....
  26. pmc Regionally specific white matter disruptions of fornix and cingulum in schizophrenia
    Muhammad Farid Abdul-Rahman
    Division of Bioengineering, National University of Singapore, Singapore, Singapore
    PLoS ONE 6:e18652. 2011
    ....
  27. doi request reprint Age-related vulnerabilities along the hippocampal longitudinal axis
    Anh Tuan Ta
    Division of Bioengineering, National University of Singapore, Singapore
    Hum Brain Mapp 33:2415-27. 2012
    ..These findings suggest that anatomy and functions related to the anterior hippocampus may be more vulnerable to aging, than previously thought...
  28. pmc Whole brain diffeomorphic metric mapping via integration of sulcal and gyral curves, cortical surfaces, and images
    Jia Du
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 56:162-73. 2011
    ..2009) and hierarchical attribute matching mechanism for elastic registration (HAMMER) (Shen and Davatzikos, 2002) in terms of cortical and subcortical volume segmentation...
  29. doi request reprint Combined analyses of thalamic volume, shape and white matter integrity in first-episode schizophrenia
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 47:1163-71. 2009
    ....
  30. pmc Spatial and temporal reproducibility-based ranking of the independent components of BOLD fMRI data
    Weiming Zeng
    F M Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD 21205, USA
    Neuroimage 46:1041-54. 2009
    ..We show that the meaningful independent components of fMRI data resemble independent components estimated from downsampled data, and thus tend to be highly ranked by the method...
  31. pmc Regional shape abnormalities in mild cognitive impairment and Alzheimer's disease
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore
    Neuroimage 45:656-61. 2009
    ..Although the locations of the shape abnormalities in MCI and AD are primarily within the mesial temporal region, analyses support distinct components of correlated shape variation that may help predict future MCI conversion...
  32. doi request reprint Morphology and microstructure of subcortical structures at birth: a large-scale Asian neonatal neuroimaging study
    Anqi Qiu
    Department of Bioengineering, National University of Singapore, Singapore
    Neuroimage 65:315-23. 2013
    ....
  33. doi request reprint Birth weight and gestation influence striatal morphology and motor response in normal six-year-old boys
    Anqi Qiu
    Division of Bioengineering, National University of Singapore, Singapore, Singapore
    Neuroimage 59:1065-70. 2012
    ....
  34. pmc Abnormalities of cingulate gyrus neuroanatomy in schizophrenia
    Lei Wang
    Department of Psychiatry, Washington University School of Medicine, Box 8134, 660 S Euclid Ave, St Louis, MO 63110, United States
    Schizophr Res 93:66-78. 2007
    ....