Research Topics
| J L LancasterSummaryAffiliation: University of Texas Health Science Center Country: USA Publications
Research Grants
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Detail Information
Publications
Phantom investigation of 3D motion-dependent volume aliasing during CT simulation for radiation therapy planningJames A Tanyi
Department of Radiation Oncology, University of Arizona Health Science Center, Tucson, AZ 85724, USA
Radiat Oncol 2:10. 2007..To quantify volumetric and positional aliasing during non-gated fast- and slow-scan acquisition CT in the presence of 3D target motion...- The BrainMap strategy for standardization, sharing, and meta-analysis of neuroimaging dataAngela R Laird
Research Imaging Institute, University of Texas Health Science Center, San Antonio, TX, USA
BMC Res Notes 4:349. 2011..abstract:.. - Automated analysis of fundamental features of brain structuresJack L Lancaster
Research Imaging Institute, Biomedical Image Analysis Division, University of Texas Health Science Center at San Antonio, 8403 Floyd Curl Drive, San Antonio, TX 78229 3900, USA
Neuroinformatics 9:371-80. 2011..These results show that ISSNs automated processing can be a valuable asset for measuring and controlling variability of fundamental features of brain structures... - Evaluation of an image-guided, robotically positioned transcranial magnetic stimulation systemJack L Lancaster
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229 3900, USA
Hum Brain Mapp 22:329-40. 2004..The estimated maximum range of error in planned vs. delivered E-field strength was +4%, suggesting a high degree of accuracy and reproducibility in the planned use of the irTMS system... - Three-pool model of white matterJack L Lancaster
University of Texas Health Science Center at San Antonio, Research Imaging Center, San Antonio, Texas 78284, USA
J Magn Reson Imaging 17:1-10. 2003..To investigate the use of a three-pool relaxation model to measure myelin, myelinated-axon, and mixed water-pool fractions in white matter (WM) during myelination... - Automated analysis of meta-analysis networksJack L Lancaster
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229 3900, USA
Hum Brain Mapp 25:174-84. 2005..These new analysis tools demonstrate how network analysis strategies can simplify greatly and enhance voxel-based meta-analyses... - Bias between MNI and Talairach coordinates analyzed using the ICBM-152 brain templateJack L Lancaster
Research Imaging Center, University of Texas Health Science Center, San Antonio, Texas, USA
Hum Brain Mapp 28:1194-205. 2007..MTT transforms provide a validated means to convert MNI coordinates to Talairach compatible coordinates for studies using either SPM2 or FSL/FLIRT with the ICBM-152 template... - Asymmetry of the brain surface from deformation field analysisJack L Lancaster
University of Texas Health Science Center at San Antonio, Research Imaging Center, San Antonio, Texas 78284, USA
Hum Brain Mapp 19:79-89. 2003..Common right frontal and left occipital petalias were seen. The DBA method can theoretically be applied to any two groups of globally similar structures where analysis of dissimilarity of regional features is sought... - Anatomical global spatial normalizationJack L Lancaster
Research Imaging Center, University of Texas Health Science Center at San Antonio, 8403 Floyd Curl Drive, San Antonio, TX 78229 3900, USA
Neuroinformatics 8:171-82. 2010..An analytical method was provided to directly convert between conventional and aGSN scale factors to support adaptation of aGSN to popular spatial normalization software packages... - Automated Talairach atlas labels for functional brain mappingJ L Lancaster
Research Imaging Center, University of Texas Health Science Center at San Antonio, 78284, USA
Hum Brain Mapp 10:120-31. 2000..Additional suggested applications of the TD system include interactive labeling, anatomical grouping of activation foci, lesion-deficit analysis, and neuroanatomy education... - Genetics of microstructure of cerebral white matter using diffusion tensor imagingP Kochunov
Research Imaging Center, University of Texas Health Science Center San Antonio, San Antonio, TX 78284, USA
Neuroimage 53:1109-16. 2010.... - A tool for comparison of PET and fMRI methods: calculation of the uncertainty in the location of an activation site in a PET imageL D Nickerson
Research Imaging Center, University of Texas Health Science Center, San Antonio 78240, USA
Neuroimage 14:194-201. 2001.... - Amygdalar and hippocampal volumetry in control participants: differences regarding handednessC A Szabo
Division of Neurology, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78284, USA
AJNR Am J Neuroradiol 22:1342-5. 2001..Gender did not affect right-to-left amygdalar and hippocampal volume ratios in right- or left-handed participants. CONCLUSION: Handedness, but not gender, seems to affect right-to-left amygdalar and hippocampal volume ratios... - 3D modeling of the total electric field induced by transcranial magnetic stimulation using the boundary element methodF S Salinas
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
Phys Med Biol 54:3631-47. 2009..e. going from high to low conductivity tissues). These findings show that realistically shaped head geometries are important for accurate modeling of the total E-field... - Location-probability profiles for the mouth region of human primary motor-sensory cortex: model and validationP T Fox
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
Neuroimage 13:196-209. 2001..Collectively, these observations provide a detailed, consensus probabilistic description of the location of the human M1-mouth representation in standardized coordinates... - Loss of cerebral white matter structural integrity tracks the gray matter metabolic decline in normal agingP Kochunov
Research Imaging Center, University of Texas Health Science Center, San Antonio, 78284, USA
Neuroimage 45:17-28. 2009..Specifically, age-related WM degradation in the thinly myelinated association tracts appears to track the decreases in global and regional rates of glucose uptake... - Reciprocal limbic-cortical function and negative mood: converging PET findings in depression and normal sadnessH S Mayberg
Research Imaging Center, University of Texas Health Science Center at San Antonio, USA
Am J Psychiatry 156:675-82. 1999..Expanding on this theory, this study examined functional interactions between specific limbic and neocortical regions accompanying normal and disease-associated shifts in negative mood state... - Cortical sulcal areas in baboons (Papio hamadryas spp.) with generalized interictal epileptic discharges on scalp EEGC A Szabo
Department of Neurology, UTHSCSA, San Antonio, TX, USA
Epilepsy Res 93:91-5. 2011.... - Brain correlates of stuttering and syllable production. A PET performance-correlation analysisP T Fox
The Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229 3900, USA
Brain 123:1985-2004. 2000..The present findings also indicate a specific role of the cerebellum in the fluent utterances of persons who stutter. Support is also offered for theories that implicate auditory processing problems in stuttering... - Force sensing system for automated assessment of motor performance during fMRIBill Rogers
Research Imaging Institute, University of Texas Health Science Center, 7703 Floyd Curl Dr, San Antonio, TX 7829, USA
J Neurosci Methods 190:92-4. 2010..The method was validated by comparing the FSR system results with results obtained by video analysis during the same session... - Meta-analysis of gray matter anomalies in schizophrenia: application of anatomic likelihood estimation and network analysisDavid C Glahn
Department of Psychiatry, University of Texas Health Science Center, San Antonio, Texas 78229 3900, USA
Biol Psychiatry 64:774-81. 2008..In this study, we performed a voxelwise, coordinate-based meta-analysis to better conceptualize the neuroanatomic correlates of schizophrenia... - Lost in localization? The focus is meta-analysisAngela R Laird
Research Imaging Center, University of Texas Health Science Center San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229 3900, USA
Neuroimage 48:18-20. 2009..In this response, we discuss our strategy in developing the BrainMap database, which was created as a mechanism to promote coordinate-based meta-analysis methods... - Relationship among neuroimaging indices of cerebral health during normal agingPeter Kochunov
Research Imaging Center, University of Texas Health Science Center at San Antonio, Texas 78284, USA
Hum Brain Mapp 29:36-45. 2008..34). These findings are of interest in designing quantitative measures of brain aging for monitoring individual patients and in large-scale clinical trials... - Comparison of the disparity between Talairach and MNI coordinates in functional neuroimaging data: validation of the Lancaster transformAngela R Laird
Research Imaging Institute, University of Texas Health Science Center, San Antonio, TX 78229 3900, USA
Neuroimage 51:677-83. 2010.... - Intensity modulation of TMS-induced cortical excitation: primary motor cortexPeter T Fox
Research Imaging Center, University of Texas Health Science Center at San Antonio, 78284, USA
Hum Brain Mapp 27:478-87. 2006..Remote regions showed varying patterns of intensity response, which we interpret as reflecting varying levels of neuronal excitability and/or functional coupling in the conditions studied... - Automated-parameterization of the motor evoked potential and cortical silent period induced by transcranial magnetic stimulationChristopher A Rábago
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
Clin Neurophysiol 120:1577-87. 2009..To standardize the characterization of motor evoked potential (MEP) and cortical silent period (CSP) recordings elicited with transcranial magnetic stimulation (TMS)... - BrainMap: the social evolution of a human brain mapping databaseAngela R Laird
Research Imaging Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
Neuroinformatics 3:65-78. 2005..In this article, we discuss BrainMap's structure and utility, and relate its progress and development as a neuroinformatics tool... - Coordinate-based voxel-wise meta-analysis: dividends of spatial normalization. Report of a virtual workshopPeter T Fox
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78284, USA
Hum Brain Mapp 25:1-5. 2005 - A comparison of label-based review and ALE meta-analysis in the Stroop taskAngela R Laird
Research Imaging Center, University of Texas Health Science Center, San Antonio, Texas 78229 3900, USA
Hum Brain Mapp 25:6-21. 2005.... - Molecular characterization of a patient with central nervous system dysmyelination and cryptic unbalanced translocation between chromosomes 4q and 18qShelly R Gunn
Department of Cellular and Structural Biology, The University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
Am J Med Genet A 120:127-35. 2003.... - Column-based model of electric field excitation of cerebral cortexPeter T Fox
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229 3900, USA
Hum Brain Mapp 22:1-14. 2004..In addition, Rushton's cosine principle can used to model stimulation efficacy for an electrical field applied at any cortical site at any intensity and in any orientation... - Opinion: Mapping context and content: the BrainMap modelPeter T Fox
Research Imaging Center, University of Texas Health Science Center at San Antonio, 78229-3900, USA
Nat Rev Neurosci 3:319-21. 2002 - MR imaging volumetry of subcortical structures and cerebellar hemispheres in normal personsC Akos Szabo
Division of Neurology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
AJNR Am J Neuroradiol 24:644-7. 2003..This study evaluated the effect of handedness and sex on the volumes of selected subcortical structures and cerebellar hemispheres in normal persons... - ALE meta-analysis: controlling the false discovery rate and performing statistical contrastsAngela R Laird
Research Imaging Center, University of Texas Health Science Center, San Antonio, Texas 78229 3900, USA
Hum Brain Mapp 25:155-64. 2005..We then give an example of how comparisons of this sort may lead to advanced designs in future meta-analytic research... - BrainMap taxonomy of experimental design: description and evaluationPeter T Fox
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78284, USA
Hum Brain Mapp 25:185-98. 2005..Authors made a total of 115 content-filter choices. Of these, 78 (68%) were Stage 1, Grade A filters; 16 (14%) were Stage 2, Grade A; and 21 (18%) were Stage 2, Grade C. No author-applied filter was absent from the taxonomy... - Genetics of primary cerebral gyrification: Heritability of length, depth and area of primary sulci in an extended pedigree of Papio baboonsP Kochunov
Research Imaging Institute, The University of Texas Health Science Center, San Antonio, TX 78229, USA
Neuroimage 53:1126-34. 2010..Our results imply that heritability of sulcal phenotypes may be regionally modulated by arcuate U-fiber systems. However, further research is necessary to unravel the complexity of genetic contributions to cortical morphology... - CBF changes during brain activation: fMRI vs. PETChing-Mei Feng
Research Imaging Center, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
Neuroimage 22:443-6. 2004..95 +/- 2.54%, whereas the value measured by PET was 38.79 +/- 2.63%. Our results have demonstrated that there is no statistically significant difference (P = 0.22) in the measurements of rCBF change between MRI and PET methods... - Perisylvian sulcal morphology and cerebral asymmetry patterns in adults who stutterMatthew D Cykowski
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78284, USA
Cereb Cortex 18:571-83. 2008..The subtle difference in cortical folding of the right perisylvian region observed in PDS subjects may correlate with functional imaging studies that have reported increased right-hemisphere activity during stuttered speech... - CNS Resident Award: role of the lateral premotor cortex in articulationNitin Tandon
Center for Neurosurgical Sciences and Research Imaging Center, University of Texas Health Science Center, San Antonio, Texas, USA
Clin Neurosurg 50:341-9. 2003 - Regional spatial normalization: toward an optimal targetP Kochunov
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78284, USA
J Comput Assist Tomogr 25:805-16. 2001..Warping to the MDT target was shown by an independent multiscale correlation method to produce superior results... - Detailed 3D models of the induced electric field of transcranial magnetic stimulation coilsF S Salinas
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
Phys Med Biol 52:2879-92. 2007..Detailed E-field models were accurate up to the surface of the coil body (within 0.5% of measured) where simple models were often inadequate (up to 32% different from measured)... - High prevalence of pineal cysts in healthy adults demonstrated by high-resolution, noncontrast brain MR imagingY Pu
Research Imaging Center, The University of Texas Health Science Center at San Antonio, TX, USA
AJNR Am J Neuroradiol 28:1706-9. 2007..5% and 10.8%. The purpose of this high-resolution brain MR imaging study at 1.9T was to determine the prevalence of pineal cysts in healthy adults... - Retrospective motion correction protocol for high-resolution anatomical MRIPeter Kochunov
Research Imaging Center, University of Texas Health Science Center at San Antonio, Texas, USA
Hum Brain Mapp 27:957-62. 2006..RMC was tested on 35 subjects who were considered at high risk for head motion. Our results show that RMC provided better contrast-to-noise ratio and boundary detail when compared to nonmotion-corrected averaged images... - Myelination in children with partial deletions of chromosome 18qJack L Lancaster
Research Imaging Center, University of Texas Health Science Center at San Antonio, TX 78284, USA
AJNR Am J Neuroradiol 26:447-54. 2005..001). CONCLUSION: Myelination modeling in 18q- children indicated delayed onset, a lower rate of myelination, and equilibrium myelin levels less than 50% those of age-matched, typically developing children... - MR imaging volumetry of subcortical structures and cerebellar hemispheres in temporal lobe epilepsyC A Szabo
South Texas Comprehensive Epilepsy Center, University of Texas Health Science Center, San Antonio 78229 7883, USA
AJNR Am J Neuroradiol 27:2155-60. 2006.... - Relationship between white matter fractional anisotropy and other indices of cerebral health in normal aging: tract-based spatial statistics study of agingP Kochunov
Research Imaging Center, University of Texas Health Science Center at San Antonio, Research Imaging Center, 7703 Floyd Curl Drive, San Antonio, TX 78284, USA
Neuroimage 35:478-87. 2007..These data are consistent with the hypothesis that late-myelinating regions of the brain bear the brunt of age-related degenerative changes... - Testing the three-pool white matter model adapted for use with T2 relaxometryTrevor Andrews
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78284-6240, USA
Magn Reson Med 54:449-54. 2005..All methods performed well with noiseless data. At lower SNR values the three-pool model was superior, primarily due to the fact that the other methods often could not unambiguously calculate pool fractions... - Positron emission tomography scanning in essential blepharospasmJohn B Kerrison
Department of Ophthalmology, Wilford Hall Medical Center, Lackland AFB, Lackland, Texas, USA
Am J Ophthalmol 136:846-52. 2003..To localize in the brain using positron emission tomography neuroimaging with (18)fluorodeoxyglucose [PET ((18)FDG)] differences in glucose metabolism between patients with essential blepharospasm (EB) and controls... - A positron-probe system for arterial input function quantification for positron emission tomography in humansKihak Lee
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
Rev Sci Instrum 79:064301. 2008..5 micros, linear regression between measured and true count rates with R(2)=0.999, and detector sensitivity of 6.9-7.0 counts/s kBq(-1) ml. These met or exceeded values of previously reported systems... - The central sulcus: an observer-independent characterization of sulcal landmarks and depth asymmetryMatthew D Cykowski
Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78284, USA
Cereb Cortex 18:1999-2009. 2008..Age correlations were performed for these asymmetries, and a significant correlation was seen only in the male subgroup... - Estimation of the local statistical noise in positron emission tomography revisited: practical implementationLisa D Nickerson
Department of Psychiatry, Harvard Medical School, Boston, MA, USA
Neuroimage 19:442-56. 2003..In addition, strategies for extending the proposed technique are discussed that would permit the estimation of the variance due to measurement error of a pixel in a brain map from both single subjects and pooled group data... - Motivation and synthesis of the FIAC experiment: Reproducibility of fMRI results across expert analysesJean Baptiste Poline
UNAF, Service Hospitalier Frederic Joliot CEA, Orsay, France
Hum Brain Mapp 27:351-9. 2006..Variable results from different methods reported here should provide a cautionary note and motivate the Human Brain Mapping community to explore more thoroughly the methodologies they use for analyzing fMRI data... - Brain correlates of stuttering and syllable production: gender comparison and replicationRoger J Ingham
Department of Speech and Hearing Sciences, University of California, Santa Barbara, CA, USA
J Speech Lang Hear Res 47:321-41. 2004..The gender differences may be related to differences between the genders with respect to susceptibility (males predominate) and recovery from chronic stuttering (females show higher recovery rates during childhood)... - Cortical sulci and bipolar disorderThomas R Coyle
Department of Psychology, University of Texas at San Antonio, Texas 78249, USA, and Service Hospitalier Frédéric Joliot, Commissariat a l Energie Atomique, Orsay Cedex, France
Neuroreport 17:1739-42. 2006..The results were interpreted in terms of neurodegenerative-illness-related processes, which could produce cortical atrophy and result in wider sulci... - Attention function after childhood strokeJeffrey E Max
Children s Way, MC 5033, University of California, San Diego, CA 92123, USA
J Int Neuropsychol Soc 10:976-86. 2004..In addition, these results may provide clues towards the understanding of mechanisms underlying attention in children...
Research Grants
- IMAGE-GUIDED ROBOTICALLY-POSITIONED TMS SYSTEMJack Lancaster; Fiscal Year: 2006..This application is in response to the NIHM Topic B "Instrumentation for Basic and Clinical Neurosciences Research" in the omnibus solicitation. ..