Research Topics
| T J HuppertSummaryAffiliation: Harvard University Country: USA Publications
| Collaborators |
Detail Information
Publications
A multicompartment vascular model for inferring baseline and functional changes in cerebral oxygen metabolism and arterial dilationTheodore J Huppert
Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts, USA
J Cereb Blood Flow Metab 27:1262-79. 2007..Finally, we compare this model to earlier work and find that the multicompartment model more accurately describes the observed oxygenation changes when compared with a single compartment version...
A temporal comparison of BOLD, ASL, and NIRS hemodynamic responses to motor stimuli in adult humansT J Huppert
Harvard Medical School Graduate Program in Biophysics, Massachusetts General Hospital, Charlestown, MA 02129, USA
Neuroimage 29:368-82. 2006..The observed co-variance in these parameters between subjects is in agreement with hemodynamic models and provides further support that fMRI and NIRS have similar vascular sensitivity...
Quantitative spatial comparison of diffuse optical imaging with blood oxygen level-dependent and arterial spin labeling-based functional magnetic resonance imagingTheodore J Huppert
Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, Charlestown, Massachusetts 02129, USA
J Biomed Opt 11:064018. 2006..73, p=5x10(-6) and R=0.71, p=9x10(-6), respectively) than the flow to deoxyhemoglobin spatial correlation (R=0.26, p=0.10)...
A vascular anatomical network model of the spatio-temporal response to brain activationDavid A Boas
Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
Neuroimage 40:1116-29. 2008....
Near-infrared spectroscopy measurement of the pulsatile component of cerebral blood flow and volume from arterial oscillationsGeorge Themelis
Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Charlestown, Massachusetts 02129, USA
J Biomed Opt 12:014033. 2007..Preliminary results show the potential of this NIRS method to measure pCBF and pCBV relative changes in neonatal pigs...
Dynamic physiological modeling for functional diffuse optical tomographySolomon Gilbert Diamond
Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
Neuroimage 30:88-101. 2006..This state-space approach to DOT analysis could be extended to BOLD fMRI analysis, multimodal studies and real-time analysis...
Diffuse optical imaging of the whole headMaria Angela Franceschini
Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, 13th Street, Bldg 149 RM 2301, Charlestown, Massachusetts 02129, USA
J Biomed Opt 11:054007. 2006....
Diffuse optical tomography system to image brain activation with improved spatial resolution and validation with functional magnetic resonance imagingDanny K Joseph
Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, MA 02129, USA
Appl Opt 45:8142-51. 2006..Experimental results showing the application of this instrument for imaging human brain activation are also presented. The observed improvement in spatial resolution is confirmed by functional magnetic resonance imaging...
Physiological system identification with the Kalman filter in diffuse optical tomographySolomon Gilbert Diamond
Massachusetts General Hospital, Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
Med Image Comput Comput Assist Interv 8:649-56. 2005..Cardiovascular dynamics also affect the blood oxygen dependent (BOLD) signal in functional magnetic resonance imaging (fMRI). This Kalman filter framework for DOT may be adapted for BOLD fMRI analysis and multimodal studies...
Exploring neuro-vascular and neuro-metabolic coupling in rat somatosensory cortexR C Mesquita
Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA 02129, USA
Phys Med Biol 54:175-85. 2009..At the same time, we characterize the metabolic and vascular neural response functions and interpret their physiological significance...
Direct estimation of evoked hemoglobin changes by multimodality fusion imagingTheodore J Huppert
The Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, Charlestown, Massachusetts 02129, USA
J Biomed Opt 13:054031. 2008..Using this multimodal method, we estimate the calibration of the 3 tesla BOLD signal to be -0.55%+/-0.40% signal change per micromolar change of deoxyhemoglobin...
