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Afonso Silva

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Magnetic Resonance Imaging

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TOP 3
Pascal Sati; Afonso C Silva; Peter van Gelderen; Jacco A de Zwart; Hellmut Merkle; Daniel Reich; Jeff H Duyn
Micro-compartment specific T2(⁎) relaxation in the brain.
Byeong-Teck Kang; Dong-Eog Kim; Renata F Leoni; Afonso C Silva
Phenylephrine-induced hypertension during transient middle cerebral artery occlusion alleviates ischemic brain injury in spontaneously hypertensive rats.
Afonso C Silva
Using manganese-enhanced MRI to understand BOLD.

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All Publications

2013: Pascal Sati; Afonso C Silva; Peter van Gelderen; Jacco A de Zwart; Hellmut Merkle; Daniel Reich; Jeff H Duyn
Micro-compartment specific T2(⁎) relaxation in the brain.
NeuroImage 2013;77():268-78.
2012: Byeong-Teck Kang; Dong-Eog Kim; Renata F Leoni; Afonso C Silva
Phenylephrine-induced hypertension during transient middle cerebral artery occlusion alleviates ischemic brain injury in spontaneously hypertensive rats.
Brain research 2012;1477():83-91.
2012: Afonso C Silva
Using manganese-enhanced MRI to understand BOLD.
NeuroImage 2012;62(2):1009-13.
2012: Jackeline M Malheiros; Luiz Eugênio A M Mello; Fernando Paiva; Roberson S Polli; Afonso C Silva; Alberto Tannús; Beatriz M Longo; Luciene Covolan
Manganese-enhanced magnetic resonance imaging detects mossy fiber sprouting in the pilocarpine model of epilepsy.
Epilepsia 2012;53(7):1225-32.
2012: Jongho Lee; Sara Palumbo; Karin Shmueli; Afonso C Silva; Peter van Gelderen; Bing Yao; Francesca Bosetti; Masaki Fukunaga; Byeong-Teck Kang; Jeff H Duyn
The contribution of myelin to magnetic susceptibility-weighted contrasts in high-field MRI of the brain.
NeuroImage 2012;59(4):3967-75.
2012: Pascal Sati; Afonso C Silva; Peter van Gelderen; Jillian E Wohler; Jeff H Duyn; Maria I Gaitan; Steven Jacobson; Daniel Reich
In vivo quantification of T₂ anisotropy in white matter fibers in marmoset monkeys.
NeuroImage 2012;59(2):979-85.
2012: Xin Yu; Stephen Dodd; Daniel Glen; Yoshiyuki Hirano; Richard Reynolds; Ziad Saad; Afonso C Silva; Shumin Wang; Alan P Koretsky
Direct imaging of macrovascular and microvascular contributions to BOLD fMRI in layers IV-V of the rat whisker-barrel cortex.
NeuroImage 2012;59(2):1451-60.
2012: Renata F Leoni; Kelley C Mazzetto-Betti; Draulio B de Araujo; Antonio C Dos Santos; João P Leite; Afonso C Silva; Octávio Pontes-Neto
Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques.
Radiology research and practice 2012;2012():268483.
2011: Renata F Leoni; George C Nascimento; Fernando Paiva; Draulio B de Araujo; Erica C Henning; Alberto Tannús; Afonso C Silva
Magnetic resonance imaging quantification of regional cerebral blood flow and cerebrovascular reactivity to carbon dioxide in normotensive and hypertensive rats.
NeuroImage 2011;58(1):75-81.
2011: Jongho Lee; Peter van Gelderen; Li-Wei Kuo; Hellmut Merkle; Afonso C Silva; Jeff H Duyn
T2*-based fiber orientation mapping.
NeuroImage 2011;57(1):225-34.
2011: Junjie V Liu; Nicholas A Bock; Afonso C Silva
Rapid high-resolution three-dimensional mapping of T1 and age-dependent variations in the non-human primate brain using magnetization-prepared rapid gradient-echo (MPRAGE) sequence.
NeuroImage 2011;56(3):1154-63.
2011: Nicholas A Bock; Eyesha Hashim; Ara Kocharyan; Afonso C Silva
Visualizing myeloarchitecture with magnetic resonance imaging in primates.
Annals of the New York Academy of Sciences 2011;1225 Suppl 1():E171-81.
2011: Yoshiyuki Hirano; Bojana Stefanovic; Afonso C Silva
Spatiotemporal evolution of the functional magnetic resonance imaging response to ultrashort stimuli.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2011;31(4):1440-7.
2011: Afonso C Silva; Junjie V Liu; Yoshiyuki Hirano; Renata F Leoni; Hellmut Merkle; Julie B Mackel; Xian Feng Zhang; George C Nascimento; Bojana Stefanovic
Longitudinal functional magnetic resonance imaging in animal models.
Methods in molecular biology (Clifton, N.J.) 2011;711():281-302.
2010: Hanbing Lu; Renata Leoni; Afonso C Silva; Elliot A Stein; Yihong Yang
High-field continuous arterial spin labeling with long labeling duration: reduced confounds from blood transit time and postlabeling delay.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2010;64(6):1557-66.
2010: Kelley C Mazzetto-Betti; Renata F Leoni; Octávio Pontes-Neto; Antonio C Santos; Joao P Leite; Afonso C Silva; Draulio B de Araujo
The stability of the blood oxygenation level-dependent functional MRI response to motor tasks is altered in patients with chronic ischemic stroke.
Stroke; a journal of cerebral circulation 2010;41(9):1921-6.
2010: Jongho Lee; Karin Shmueli; Masaki Fukunaga; Peter van Gelderen; Hellmut Merkle; Afonso C Silva; Jeff H Duyn
Sensitivity of MRI resonance frequency to the orientation of brain tissue microstructure.
Proceedings of the National Academy of Sciences of the United States of America 2010;107(11):5130-5.
2010: Yuko Kawai; Ichio Aoki; Masahiro Umeda; Toshihiro Higuchi; Jeff Kershaw; Makoto Higuchi; Afonso C Silva; Chuzo Tanaka
In vivo visualization of reactive gliosis using manganese-enhanced magnetic resonance imaging.
NeuroImage 2010;49(4):3122-31.
2010: Saba Aid; Afonso C Silva; Eduardo Candelario-Jalil; Sang-Ho Choi; Gary A Rosenberg; Francesca Bosetti
Cyclooxygenase-1 and -2 differentially modulate lipopolysaccharide-induced blood-brain barrier disruption through matrix metalloproteinase activity.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 2010;30(2):370-80.
2010: Jongho Lee; Yoshiyuki Hirano; Masaki Fukunaga; Afonso C Silva; Jeff H Duyn
On the contribution of deoxy-hemoglobin to MRI gray-white matter phase contrast at high field.
NeuroImage 2010;49(1):193-8.
2009: Nicholas A Bock; Ara Kocharyan; Junjie V Liu; Afonso C Silva
Visualizing the entire cortical myelination pattern in marmosets with magnetic resonance imaging.
Journal of neuroscience methods 2009;185(1):15-22.
2009: JOHN NEWMAN; William M Kenkel; Emily C Aronoff; Nicholas A Bock; Molly R Zametkin; Afonso C Silva
A combined histological and MRI brain atlas of the common marmoset monkey, Callithrix jacchus.
Brain research reviews 2009;62(1):1-18.
2009: Nicholas A Bock; Ara Kocharyan; Afonso C Silva
Manganese-enhanced MRI visualizes V1 in the non-human primate visual cortex.
NMR in biomedicine 2009;22(7):730-6.
2009: Kai-Hsiang Chuang; Jung Hee Lee; Afonso C Silva; Leonardo Belluscio; Alan Koretsky
Manganese enhanced MRI reveals functional circuitry in response to odorant stimuli.
NeuroImage 2009;44(2):363-72.
2009: Afonso C Silva; Fernando Paiva
Dynamic magnetic resonance imaging of cerebral blood flow using arterial spin labeling.
Methods in molecular biology (Clifton, N.J.) 2009;489():277-95.
2008: Afonso C Silva; Nicholas A Bock
Manganese-enhanced MRI: an exceptional tool in translational neuroimaging.
Schizophrenia bulletin 2008;34(4):595-604.
2008: Nicholas A Bock; Fernando Paiva; Afonso C Silva
Fractionated manganese-enhanced MRI.
NMR in biomedicine 2008;21(5):473-8.
2008: Fernando Paiva; Alberto Tannús; S Lalith Talagala; Afonso C Silva
Arterial spin labeling of cerebral perfusion territories using a separate labeling coil.
Journal of magnetic resonance imaging : JMRI 2008;27(5):970-7.
2008: Bojana Stefanovic; Elizabeth Hutchinson; Victoria Yakovleva; Vincent Schram; James T Russell; Leonardo Belluscio; Alan Koretsky; Afonso C Silva
Functional reactivity of cerebral capillaries.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 2008;28(5):961-72.
2008: Nicholas A Bock; Fernando Paiva; George C Nascimento; JOHN NEWMAN; Afonso C Silva
Cerebrospinal fluid to brain transport of manganese in a non-human primate revealed by MRI.
Brain research 2008;1198():160-70.
2008: Artem G Goloshevsky; Afonso C Silva; Stephen J Dodd; Alan Koretsky
BOLD fMRI and somatosensory evoked potentials are well correlated over a broad range of frequency content of somatosensory stimulation of the rat forepaw.
Brain research 2008;1195():67-76.
2008: Afonso C Silva; Jung Hee Lee; Carolyn W-H Wu; Jason Tucciarone; Galit Pelled; Ichio Aoki; Alan Koretsky
Detection of cortical laminar architecture using manganese-enhanced MRI.
Journal of neuroscience methods 2008;167(2):246-57.
2007: Fernando Paiva; Alberto Tannús; Afonso C Silva
Measurement of cerebral perfusion territories using arterial spin labelling.
NMR in biomedicine 2007;20(7):633-42.
2007: Afonso C Silva; Alan Koretsky; Jeff H Duyn
Functional MRI impulse response for BOLD and CBV contrast in rat somatosensory cortex.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2007;57(6):1110-8.
2007: Bojana Stefanovic; Wolfram Schwindt; Mathias Hoehn; Afonso C Silva
Functional uncoupling of hemodynamic from neuronal response by inhibition of neuronal nitric oxide synthase.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 2007;27(4):741-54.
2007: Paulo Loureiro de Sousa; Sandra L de Souza; Afonso C Silva; Ricardo E de Souza; Raul Manhaes de Castro
Manganese-enhanced magnetic resonance imaging (MEMRI) of rat brain after systemic administration of MnCl2: changes in T1 relaxation times during postnatal development.
Journal of magnetic resonance imaging : JMRI 2007;25(1):32-8.
2006: Natalia Petridou; Dietmar Plenz; Afonso C Silva; Murray Loew; Jerzy Bodurka; Peter Bandettini
Direct magnetic resonance detection of neuronal electrical activity.
Proceedings of the National Academy of Sciences of the United States of America 2006;103(43):16015-20.
2006: Willy Gsell; Michael Burke; Dirk Wiedermann; Gilles Bonvento; Afonso C Silva; François Dauphin; Christian Bührle; Mathias Hoehn; Wolfram Schwindt
Differential effects of NMDA and AMPA glutamate receptors on functional magnetic resonance imaging signals and evoked neuronal activity during forepaw stimulation of the rat.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2006;26(33):8409-16.
2006: Elizabeth B Hutchinson; Bojana Stefanovic; Alan Koretsky; Afonso C Silva
Spatial flow-volume dissociation of the cerebral microcirculatory response to mild hypercapnia.
NeuroImage 2006;32(2):520-30.
2006: Bojana Stefanovic; Francesca Bosetti; Afonso C Silva
Modulatory role of cyclooxygenase-2 in cerebrovascular coupling.
NeuroImage 2006;32(1):23-32.
2006: Ichio Aoki; Yoshiyuki Takahashi; Kai-Hsiang Chuang; Afonso C Silva; Takehito Igarashi; Chuzo Tanaka; Richard W Childs; Alan Koretsky
Cell labeling for magnetic resonance imaging with the T1 agent manganese chloride.
NMR in biomedicine 2006;19(1):50-9.
2006: Shella D Keilholz; Afonso C Silva; Mira Raman; Hellmut Merkle; Alan Koretsky
BOLD and CBV-weighted functional magnetic resonance imaging of the rat somatosensory system.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2006;55(2):316-24.
2005: Afonso C Silva
Perfusion-based fMRI: insights from animal models.
Journal of magnetic resonance imaging : JMRI 2005;22(6):745-50.
2005: Jung Hee Lee; Afonso C Silva; Hellmut Merkle; Alan Koretsky
Manganese-enhanced magnetic resonance imaging of mouse brain after systemic administration of MnCl2: dose-dependent and temporal evolution of T1 contrast.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2005;53(3):640-8.
2005: Jacco A de Zwart; Afonso C Silva; Peter van Gelderen; Peter Kellman; Masaki Fukunaga; Renxin Chu; Alan Koretsky; Joseph A Frank; Jeff H Duyn
Temporal dynamics of the BOLD fMRI impulse response.
NeuroImage 2005;24(3):667-77.
2005: Zhengguang Chen; Afonso C Silva; Jehoon Yang; Jun Shen
Elevated endogenous GABA level correlates with decreased fMRI signals in the rat brain during acute inhibition of GABA transaminase.
Journal of neuroscience research 2005;79(3):383-91.
2004: Afonso C Silva; Jung Hee Lee; Ichio Aoki; Alan Koretsky
Manganese-enhanced magnetic resonance imaging (MEMRI): methodological and practical considerations.
NMR in biomedicine 2004;17(8):532-43.
2004: Alan Koretsky; Afonso C Silva
Manganese-enhanced magnetic resonance imaging (MEMRI).
NMR in biomedicine 2004;17(8):527-31.
2004: Shella D Keilholz; Afonso C Silva; Mira Raman; Hellmut Merkle; Alan Koretsky
Functional MRI of the rodent somatosensory pathway using multislice echo planar imaging.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2004;52(1):89-99.
2004: Ichio Aoki; Yi-Jen Lin Wu; Afonso C Silva; Ronald M Lynch; Alan Koretsky
In vivo detection of neuroarchitecture in the rodent brain using manganese-enhanced MRI.
NeuroImage 2004;22(3):1046-59.
2003: Colette Grabill; Afonso C Silva; Sophia S Smith; Alan Koretsky; Tracey A Rouault
MRI detection of ferritin iron overload and associated neuronal pathology in iron regulatory protein-2 knockout mice.
Brain research 2003;971(1):95-106.
2002: Ichio Aoki; Chuzo Tanaka; Tetsuro Takegami; Toshihiko Ebisu; Masahiro Umeda; Masaki Fukunaga; Kohji Fukuda; Afonso C Silva; Alan Koretsky; Shoji Naruse
Dynamic activity-induced manganese-dependent contrast magnetic resonance imaging (DAIM MRI).
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2002;48(6):927-33.
2002: Afonso C Silva; Alan Koretsky
Laminar specificity of functional MRI onset times during somatosensory stimulation in rat.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(23):15182-7.
2002: Sang-Pil Lee; Afonso C Silva; Seong-Gi Kim
Comparison of diffusion-weighted high-resolution CBF and spin-echo BOLD fMRI at 9.4 T.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2002;47(4):736-41.
2001: Emmanuel L Barbier; Afonso C Silva; S G Kim; Alan Koretsky
Perfusion imaging using dynamic arterial spin labeling (DASL).
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2001;45(6):1021-9.
2000: Afonso C Silva; Seong-Gi Kim; Michael Garwood
Imaging blood flow in brain tumors using arterial spin labeling.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2000;44(2):169-73.
2000: Afonso C Silva; Sang-Pil Lee; costantino iadecola; Seong-Gi Kim
Early temporal characteristics of cerebral blood flow and deoxyhemoglobin changes during somatosensory stimulation.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 2000;20(1):201-6.
1999: Sang-Pil Lee; Afonso C Silva; Kamil Ugurbil; Seong-Gi Kim
Diffusion-weighted spin-echo fMRI at 9.4 T: microvascular/tissue contribution to BOLD signal changes.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1999;42(5):919-28.
1999: Afonso C Silva; Seong-Gi Kim
Pseudo-continuous arterial spin labeling technique for measuring CBF dynamics with high temporal resolution.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1999;42(3):425-9.
1999: Emmanuel L Barbier; Afonso C Silva; H J Kim; Donald S Williams; Alan Koretsky
Perfusion analysis using dynamic arterial spin labeling (DASL).
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1999;41(2):299-308.
1998: Afonso C Silva; Emmanuel L Barbier; I J Lowe; Alan Koretsky
Radial echo-planar imaging.
Journal of magnetic resonance (San Diego, Calif. : 1997) 1998;135(1):242-7.
1998: Steven D Forman; Afonso C Silva; Nikolas Dedousis; Emmanuel L Barbier; John D Fernstrom; Alan Koretsky
Simultaneous glutamate and perfusion fMRI responses to regional brain stimulation.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 1998;18(10):1064-70.
1997: Afonso C Silva; Donald S Williams; Alan Koretsky
Evidence for the exchange of arterial spin-labeled water with tissue water in rat brain from diffusion-sensitized measurements of perfusion.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1997;38(2):232-7.
1997: Afonso C Silva; W Zhang; Donald S Williams; Alan Koretsky
Estimation of water extraction fractions in rat brain using magnetic resonance measurement of perfusion with arterial spin labeling.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1997;37(1):58-68.
1995: W Zhang; Afonso C Silva; Donald S Williams; Alan Koretsky
NMR measurement of perfusion using arterial spin labeling without saturation of macromolecular spins.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1995;33(3):370-6.
1995: Afonso C Silva; W Zhang; Donald S Williams; Alan Koretsky
Multi-slice MRI of rat brain perfusion during amphetamine stimulation using arterial spin labeling.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1995;33(2):209-14.