C H Moritz
Affiliation: University of Wisconsin
- Power spectrum ranked independent component analysis of a periodic fMRI complex motor paradigmChad H Moritz
Department of Radiology, University of Wisconsin, Madison, Wisconsin 53792, USA
Hum Brain Mapp 18:111-22. 2003..Results indicate the sensitivity of ICA to short-duration hemodynamics, and the efficacy of a power spectrum ranking method for identification of task-related components...
- Functional MRI neuroanatomic correlates of the Hooper Visual Organization TestChad H Moritz
Department of Radiology, University of Wisconsin Medical School, Madison, USA
J Int Neuropsychol Soc 10:939-47. 2004..Discussion is made of interpretive limitations when adapting neuropsychological tests to fMRI analysis...
- Functional MR imaging assessment of a non-responsive brain injured patientC H Moritz
Department of Radiology, University of Wisconsin, Madison, WI, USA
Magn Reson Imaging 19:1129-32. 2001..These results indicate that fMRI examinations may provide a useful evaluation for brain function in non-responsive brain trauma patients...
- Combining independent component analysis and correlation analysis to probe interregional connectivity in fMRI task activation datasetsK Arfanakis
Department of Medical Physics, University of Wisconsin, 1530 Medical Science Center, 1300 University Avenue, Madison, WI 53706 1532, USA
Magn Reson Imaging 18:921-30. 2000..In addition, ICA effectively removes activation from the data and may allow us to study functional connectivity even in the activated regions...
- Frequencies contributing to functional connectivity in the cerebral cortex in "resting-state" dataD Cordes
Department of Medical Physics, University of Wisconsin at Madison, 1300 University Ave, 1530 MSC, Madison, WI 53706, USA
AJNR Am J Neuroradiol 22:1326-33. 2001..In functionally connected regions, these low frequencies are characterized by a high degree of temporal coherence...
- Comparison of independent component analysis and conventional hypothesis-driven analysis for clinical functional MR image processingMichelle A Quigley
Department of Radiology University of Wisconsin, 1530 Medical Sciences Center, Madison, WI 53706-1532, USA
AJNR Am J Neuroradiol 23:49-58. 2002..Differences were consistent with the particular characteristics of the method. In data sets corrupted by motion or incorrect task performance, ICA may produce more accurate maps...
- Assessment of multiple task activation and reproducibility in patients with benign and low-grade neoplasmR D McKinsey
Medical Physics, School of Medicine and Public Health, University of Wisconsin Madison, Madison, Wisconsin, USA
Technol Cancer Res Treat 9:319-26. 2010..FMRI is indicated to be a noninvasive tool with acceptable reproducibility measures for assessing the localizations of multiple language and sensorimotor functions in patients scheduled for radiotherapy treatment...
- Reliability of functional MR imaging with word-generation tasks for mapping Broca's areaJ H Brannen
Department of Radiology, University of Wisconsin, Madison, USA
AJNR Am J Neuroradiol 22:1711-8. 2001..CONCLUSION: fMR imaging with word-generation tasks produces technically satisfactory maps of Broca's area, which localize the area accurately and reliably...
- Impact of brain tumor location on morbidity and mortality: a retrospective functional MR imaging studyJ M Wood
Department of Neuroradiology, University of Wisconsin School of Medicine and Public Health, University of Wisconsin Madison, 53705, USA
AJNR Am J Neuroradiol 32:1420-5. 2011..Our study evaluated the efficacy of clinical fMRI by analyzing the relationship between the distance from the tumor border to the area of functional activation (LAD) and patient pre- and postoperative morbidity and mortality...
- Characterizing instantaneous phase relationships in whole-brain fMRI activation dataAngela R Laird
Department of Physics, University of Wisconsin, Madison, Wisconsin, USA
Hum Brain Mapp 16:71-80. 2002..We conclude that this method of analysis is useful for revealing additional information on the complex nature of the fMRI time series...
- Independent component analysis applied to self-paced functional MR imaging paradigmsChad H Moritz
Department of Radiology, University of Wisconsin Madison Medical School, E1 311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792 3252, USA
Neuroimage 25:181-92. 2005..These preliminary results indicate that ICA is useful as an exploratory and complementary method to conventional regression analysis for fMRI of self-paced paradigms...
- Test-retest precision of functional magnetic resonance imaging processed with independent component analysisG E Nybakken
Department of Radiology, The University of Wisconsin Hospitals and Clinics, 600 Highland Avenue, Madison 53792, USA
Neuroradiology 44:403-6. 2002..69+/-0.10 for ICA and 0.65+/-0.13 for the conventional method, a statistically insignificant difference. In fMR image data of block stimulus paradigms, ICA had similar test-retest precision to a conventional model-dependent method...
- Activation of brain regions vulnerable to Alzheimer's disease: the effect of mild cognitive impairmentS C Johnson
Geriatric Research Education and Clinical Center, Wm S Middleton VA Hospital, 2500 Overlook Terrace 11G, GRECC, Madison, WI 53705, USA
Neurobiol Aging 27:1604-12. 2006..Our results suggest that a change in function in the PC may account, in part, for memory recollection failure in AD...
- Preoperative mapping of the supplementary motor area in patients harboring tumors in the medial frontal lobeLindsey Nelson
Department of Radiology, University of Wisconsin School of Medicine, Madison, Wisconsin 53792, USA
J Neurosurg 97:1108-14. 2002....
- Supplementary motor area activation in patients with frontal lobe tumors and arteriovenous malformationsJanet Sailor
Department of Radiology, University of Wisconsin Medical School, Madison, Wisconsin, 53792, USA
AJNR Am J Neuroradiol 24:1837-42. 2003..Differences between patients and controls were statistically significant. CONCLUSION: A lesion that contacts or overlaps the SMA is associated with an increased functional MR imaging response within the contralateral SMA...
- Evaluation of a signal intensity mask in the interpretation of functional MR imaging activation mapsRoberta M Strigel
Department of Radiology, University of Wisconsin, Madison, 53792-3252, USA
AJNR Am J Neuroradiol 26:578-84. 2005..The availability of the SIM may affect interpretation of the fMRI...
- Diffusion-tensor imaging of white matter tracts in patients with cerebral neoplasmBrian P Witwer
Department ofNeurological Surgery, University of Wisconsin School of Medicine, Madison 53792, USA
J Neurosurg 97:568-75. 2002..Whether resection of these involved fibers results in subtle postoperative neurological deficits requires further systematic study...
- fMRI reveals large-scale network activation in minimally conscious patientsChad H Moritz
Neurology 65:1843. 2005