Sort by
Items per page

Send to

Choose Destination

Search results

Items: 41


Characterization of Diffusion Metric Map Similarity in Data From a Clinical Data Repository Using Histogram Distances.

Warner GC, Helmer KG.

Front Neurosci. 2018 Mar 8;12:133. doi: 10.3389/fnins.2018.00133. eCollection 2018.


QIN DAWG Validation of Gradient Nonlinearity Bias Correction Workflow for Quantitative Diffusion-Weighted Imaging in Multicenter Trials.

Malyarenko DI, Wilmes LJ, Arlinghaus LR, Jacobs MA, Huang W, Helmer KG, Taouli B, Yankeelov TE, Newitt D, Chenevert TL.

Tomography. 2016 Dec;2(4):396-405. doi: 10.18383/j.tom.2016.00214.


Sharing brain mapping statistical results with the neuroimaging data model.

Maumet C, Auer T, Bowring A, Chen G, Das S, Flandin G, Ghosh S, Glatard T, Gorgolewski KJ, Helmer KG, Jenkinson M, Keator DB, Nichols BN, Poline JB, Reynolds R, Sochat V, Turner J, Nichols TE.

Sci Data. 2016 Dec 6;3:160102. doi: 10.1038/sdata.2016.102.


Multi-site Study of Diffusion Metric Variability: Characterizing the Effects of Site, Vendor, Field Strength, and Echo Time using the Histogram Distance.

Helmer KG, Chou MC, Preciado RI, Gimi B, Rollins NK, Song A, Turner J, Mori S.

Proc SPIE Int Soc Opt Eng. 2016 Feb 27;9788. pii: 97881G. Epub 2016 Mar 29.


Multi-site study of diffusion metric variability: effects of site, vendor, field strength, and echo time on regions-of-interest and histogram-bin analyses.

Helmer KG, Chou MC, Preciado RI, Gimi B, Rollins NK, Song A, Turner J, Mori S.

Proc SPIE Int Soc Opt Eng. 2016 Feb 27;9788. pii: 97882U. Epub 2016 Mar 29.


Demonstration of nonlinearity bias in the measurement of the apparent diffusion coefficient in multicenter trials.

Malyarenko DI, Newitt D, J Wilmes L, Tudorica A, Helmer KG, Arlinghaus LR, Jacobs MA, Jajamovich G, Taouli B, Yankeelov TE, Huang W, Chenevert TL.

Magn Reson Med. 2016 Mar;75(3):1312-23. doi: 10.1002/mrm.25754. Epub 2015 May 2.


The Sport Concussion Education Project. A brief report on an educational initiative: from concept to curriculum.

Echlin PS, Johnson AM, Holmes JD, Tichenoff A, Gray S, Gatavackas H, Walsh J, Middlebro T, Blignaut A, MacIntyre M, Anderson C, Fredman E, Mayinger M, Skopelja EN, Sasaki T, Bouix S, Pasternak O, Helmer KG, Koerte IK, Shenton ME, Forwell LA.

J Neurosurg. 2014 Dec;121(6):1331-6. doi: 10.3171/2014.8.JNS132804. Epub 2014 Oct 3.


Hockey Concussion Education Project, Part 1. Susceptibility-weighted imaging study in male and female ice hockey players over a single season.

Helmer KG, Pasternak O, Fredman E, Preciado RI, Koerte IK, Sasaki T, Mayinger M, Johnson AM, Holmes JD, Forwell LA, Skopelja EN, Shenton ME, Echlin PS.

J Neurosurg. 2014 Apr;120(4):864-72. doi: 10.3171/2013.12.JNS132093. Epub 2014 Feb 4.


Hockey Concussion Education Project, Part 2. Microstructural white matter alterations in acutely concussed ice hockey players: a longitudinal free-water MRI study.

Pasternak O, Koerte IK, Bouix S, Fredman E, Sasaki T, Mayinger M, Helmer KG, Johnson AM, Holmes JD, Forwell LA, Skopelja EN, Shenton ME, Echlin PS.

J Neurosurg. 2014 Apr;120(4):873-81. doi: 10.3171/2013.12.JNS132090. Epub 2014 Feb 4. Erratum in: J Neurosurg. 2014 Aug;121(2):498-500.


Hockey Concussion Education Project, Part 3. White matter microstructure in ice hockey players with a history of concussion: a diffusion tensor imaging study.

Sasaki T, Pasternak O, Mayinger M, Muehlmann M, Savadjiev P, Bouix S, Kubicki M, Fredman E, Dahlben B, Helmer KG, Johnson AM, Holmes JD, Forwell LA, Skopelja EN, Shenton ME, Echlin PS, Koerte IK.

J Neurosurg. 2014 Apr;120(4):882-90. doi: 10.3171/2013.12.JNS132092. Epub 2014 Jan 28.


Multicenter reliability of diffusion tensor imaging.

Magnotta VA, Matsui JT, Liu D, Johnson HJ, Long JD, Bolster BD Jr, Mueller BA, Lim K, Mori S, Helmer KG, Turner JA, Reading S, Lowe MJ, Aylward E, Flashman LA, Bonett G, Paulsen JS.

Brain Connect. 2012;2(6):345-55. doi: 10.1089/brain.2012.0112.


Data sharing in neuroimaging research.

Poline JB, Breeze JL, Ghosh S, Gorgolewski K, Halchenko YO, Hanke M, Haselgrove C, Helmer KG, Keator DB, Marcus DS, Poldrack RA, Schwartz Y, Ashburner J, Kennedy DN.

Front Neuroinform. 2012 Apr 5;6:9. doi: 10.3389/fninf.2012.00009. eCollection 2012.


T₂* mapping and B₀ orientation-dependence at 7 T reveal cyto- and myeloarchitecture organization of the human cortex.

Cohen-Adad J, Polimeni JR, Helmer KG, Benner T, McNab JA, Wald LL, Rosen BR, Mainero C.

Neuroimage. 2012 Apr 2;60(2):1006-14. doi: 10.1016/j.neuroimage.2012.01.053. Epub 2012 Jan 15.


Enabling collaborative research using the Biomedical Informatics Research Network (BIRN).

Helmer KG, Ambite JL, Ames J, Ananthakrishnan R, Burns G, Chervenak AL, Foster I, Liming L, Keator D, Macciardi F, Madduri R, Navarro JP, Potkin S, Rosen B, Ruffins S, Schuler R, Turner JA, Toga A, Williams C, Kesselman C; Biomedical Informatics Research Network.

J Am Med Inform Assoc. 2011 Jul-Aug;18(4):416-22. doi: 10.1136/amiajnl-2010-000032. Epub 2011 Apr 22.


Recruitment and stabilization of brain activation within a working memory task; an FMRI study.

Paskavitz JF, Sweet LH, Wellen J, Helmer KG, Rao SM, Cohen RA.

Brain Imaging Behav. 2010 Mar;4(1):5-21. doi: 10.1007/s11682-009-9081-4. Epub 2009 Dec 11.


Microstructural status of ipsilesional and contralesional corticospinal tract correlates with motor skill in chronic stroke patients.

Schaechter JD, Fricker ZP, Perdue KL, Helmer KG, Vangel MG, Greve DN, Makris N.

Hum Brain Mapp. 2009 Nov;30(11):3461-74. doi: 10.1002/hbm.20770.


Regional white matter volume differences in nondemented aging and Alzheimer's disease.

Salat DH, Greve DN, Pacheco JL, Quinn BT, Helmer KG, Buckner RL, Fischl B.

Neuroimage. 2009 Feb 15;44(4):1247-58. doi: 10.1016/j.neuroimage.2008.10.030. Epub 2008 Nov 5.


Multispectral quantification of tissue types in a RIF-1 tumor model with histological validation. Part I.

Henning EC, Azuma C, Sotak CH, Helmer KG.

Magn Reson Med. 2007 Mar;57(3):501-12.


Water movement in tendon in response to a repeated static tensile load using one-dimensional magnetic resonance imaging.

Helmer KG, Nair G, Cannella M, Grigg P.

J Biomech Eng. 2006 Oct;128(5):733-41.


Measurement of the spatial redistribution of water in rabbit Achilles tendon in response to static tensile loading.

Helmer KG, Wellen J, Grigg P, Sotak CH.

J Biomech Eng. 2004 Oct;126(5):651-6.


Deconvolution of compartmental water diffusion coefficients in yeast-cell suspensions using combined T(1) and diffusion measurements.

Silva MD, Helmer KG, Lee JH, Han SS, Springer CS Jr, Sotak CH.

J Magn Reson. 2002 May;156(1):52-63.


Acute postischemic renormalization of the apparent diffusion coefficient of water is not associated with reversal of astrocytic swelling and neuronal shrinkage in rats.

Li F, Liu KF, Silva MD, Meng X, Gerriets T, Helmer KG, Fenstermacher JD, Sotak CH, Fisher M.

AJNR Am J Neuroradiol. 2002 Feb;23(2):180-8.


Multispectral analysis of the temporal evolution of cerebral ischemia in the rat brain.

Carano RA, Li F, Irie K, Helmer KG, Silva MD, Fisher M, Sotak CH.

J Magn Reson Imaging. 2000 Dec;12(6):842-58.


Secondary decline in apparent diffusion coefficient and neurological outcomes after a short period of focal brain ischemia in rats.

Li F, Silva MD, Liu KF, Helmer KG, Omae T, Fenstermacher JD, Sotak CH, Fisher M.

Ann Neurol. 2000 Aug;48(2):236-44.


Changes in ADC caused by tensile loading of rabbit achilles tendon: evidence for water transport.

Han S, Gemmell SJ, Helmer KG, Grigg P, Wellen JW, Hoffman AH, Sotak CH.

J Magn Reson. 2000 Jun;144(2):217-27.


Determination of focal ischemic lesion volume in the rat brain using multispectral analysis.

Carano RA, Takano K, Helmer KG, Tatlisumak T, Irie K, Petruccelli JD, Fisher M, Sotak CH.

J Magn Reson Imaging. 1998 Nov-Dec;8(6):1266-78.


Dephasing of Hahn echo in rocks by diffusion in susceptibility-induced field inhomogeneities.

Hürlimann MD, Helmer KG, Sotak CH.

Magn Reson Imaging. 1998 Jun-Jul;16(5-6):535-9.


On the correlation between the water diffusion coefficient and oxygen tension in RIF-1 tumors.

Helmer KG, Han S, Sotak CH.

NMR Biomed. 1998 May;11(3):120-30.


The role of spreading depression in focal ischemia evaluated by diffusion mapping.

Takano K, Latour LL, Formato JE, Carano RA, Helmer KG, Hasegawa Y, Sotak CH, Fisher M.

Ann Neurol. 1996 Mar;39(3):308-18.


The application of porous-media theory to the investigation of time-dependent diffusion in in vivo systems.

Helmer KG, Dardzinski BJ, Sotak CH.

NMR Biomed. 1995 Nov-Dec;8(7-8):297-306.


Prompt and isomeric fission of Pu isotopes following heavy-ion induced transfer reactions.

Cresswell AJ, Devlin M, Butler PA, Cline D, Helmer KG, Ibbotson R, Jones GD, Stoyer MA, Rasmussen JO, Wu CY.

Phys Rev C Nucl Phys. 1995 Feb;51(2):1025-1028. No abstract available.


Excitation-energy partition in quasielastic transfer reactions at near barrier energies.

Wu CY, Cline D, Devlin M, Helmer KG, Ibbotson RW, Simon MW, Butler PA, Cresswell AJ, Jones GD, Jones PM, Smith JF, Cunningham RA, Simpson J.

Phys Rev C Nucl Phys. 1995 Jan;51(1):173-177. No abstract available.


Search for diabolical pair transfer in two-neutron transfer reactions.

Helmer KG, Wu CY, Cline D, Kavka AE, Kernan WJ, Vogt EG, Guidry MW, Han XL, Kincaid RW, Liu XT, Schecter H, Rasmussen JO, Shihab-Eldin A, Stoyer MA, Halbert ML.

Phys Rev C Nucl Phys. 1993 Oct;48(4):1879-1883. No abstract available.


Octupole collectivity in the ground band of 148Nd.

Ibbotson R, White CA, Czosnyka T, Butler PA, Clarkson N, Cline D, Cunningham RA, Devlin M, Helmer KG, Hoare TH, Hughes JR, Jones GD, Kavka AE, Kotlinski B, Poynter RJ, Regan P, Vogt EG, Wadsworth R, Watson DL, Wu CY.

Phys Rev Lett. 1993 Sep 27;71(13):1990-1993. No abstract available.


Spectroscopy of 238,239Pu studied by quasielastic reactions.

Devlin M, Cline D, Helmer KG, Ibbotson R, Wu CY, Butler PA, Cresswell AJ, Jones GD, Stoyer MA, Rasmussen JO.

Phys Rev C Nucl Phys. 1993 May;47(5):2178-2184. No abstract available.


Population of high-spin states in 234U by heavy-ion-induced transfer reactions.

Helmer KG, Wu CY, Cline D, Deleplanque MA, Diamond RM, Kavka AE, Kernan WJ, Liu XT, Macchiavelli AO, McDonald RJ, Rasmussen JO, Stephens FS, Stoyer MA, Vogt EG.

Phys Rev C Nucl Phys. 1991 Dec;44(6):2598-2601. No abstract available.


Supplemental Content

Loading ...
Support Center