Affiliation: Wake Forest University School of Medicine
- The impact of temporal regularization on estimates of the BOLD hemodynamic response function: a comparative analysisRamon Casanova
Department of Radiology, Wake Forest University School of Medicine, Winston Salem, NC, USA
Neuroimage 40:1606-18. 2008..Our results clarify the effects of temporal resolution, noise color, and experimental design on the accuracy of HRF estimation...
- Biological parametric mapping: A statistical toolbox for multimodality brain image analysisRamon Casanova
Advanced Neuroscience Imaging Research ANSIR Laboratory, Department of Radiology, Wake Forest University School of Medicine, USA
Neuroimage 34:137-43. 2007..An example with in vivo data is presented, demonstrating the potential of the BPM methodology as a tool for multimodal image analysis...
- Application of machine learning methods to describe the effects of conjugated equine estrogens therapy on region-specific brain volumesRamon Casanova
Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston Salem, NC, USA
Magn Reson Imaging 29:546-53. 2011..6 years is associated with lower regional brain volumes, but it does not induce a characteristic spatial pattern of changes in brain volumes of sufficient magnitude to discriminate users and nonusers...
- Aging and the interaction of sensory cortical function and structureAnn M Peiffer
Department of Radiology, Wake Forest University School of Medicine, Winston Salem, North Carolina 27157, USA
Hum Brain Mapp 30:228-40. 2009..Thus, functional differences in cortical activity between older and younger adults cannot solely be accounted for by differences in gray matter volume...
- Closing the mind's eye: deactivation of visual cortex related to auditory task difficultyW David Hairston
ANSIR Lab, Department of Radiology, Wake Forest University School of Medicine, Winston Salem, North Carolina 27257, USA
Neuroreport 19:151-4. 2008..Together, these results suggest that cross-modal deactivations occur in compensation for task difficulty, perhaps acting as an intrinsic filter for nonrelevant information...
- High dimensional classification of structural MRI Alzheimer's disease data based on large scale regularizationRamon Casanova
Department of Biostatistical Sciences, Wake Forest School of Medicine Winston Salem, NC, USA
Front Neuroinform 5:22. 2011..Although we have demonstrated the efficacy of this voxel-wise classification method in discriminating cognitive normal subjects from AD patients, in principle it could be applied to any clinical population...
- Influence of type 2 diabetes on brain volumes and changes in brain volumes: results from the Women's Health Initiative Magnetic Resonance Imaging studiesMark A Espeland
Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston Salem, NC, USA
Diabetes Care 36:90-7. 2013..To study how type 2 diabetes adversely affects brain volumes, changes in volume, and cognitive function...
- Relating imaging indices of white matter integrity and volume in healthy older adultsChristina E Hugenschmidt
Neuroscience Program, Wake Forest University School of Medicine, Winston Salem, NC 27157, USA
Cereb Cortex 18:433-42. 2008..As such, the ability to detect early white matter alterations may facilitate development of targeted treatments that prevent or slow age-related white matter degradation and associated cognitive sequelae...
- Effect of resting-state functional MR imaging duration on stability of graph theory metrics of brain network connectivityChristopher T Whitlow
Advanced NeuroScience Imaging Research Laboratory, Division of Radiologic Sciences, Department of Radiology, Wake Forest University School of Medicine, Medical Center Blvd, Winston Salem, NC 27157 1088, USA
Radiology 259:516-24. 2011..To investigate the effect of resting-state (RS) functional magnetic resonance (MR) imaging blood oxygen level-dependent (BOLD) signal acquisition duration on stability of computed graph theory metrics of brain network connectivity...