Výsledky vyhledávání - "Renata F. Leoni"

Akademický článek

Intravoxel incoherent motion MRI in neurological and cerebrovascular diseases

Autor: André M. Paschoal, Renata F. Leoni, Antonio C. dos Santos, Fernando F. Paiva

Publikováno v: NeuroImage: Clinical, Vol 20, Iss , Pp 705-714 (2018)

Intravoxel Incoherent Motion (IVIM) is a recently rediscovered noninvasive magnetic resonance imaging (MRI) method based on diffusion-weighted imaging. It enables the separation of the intravoxel signal into diffusion due to Brownian motion and perfu

Externí odkaz: https://doaj.org/article/1d7f24356db04a8e8724cc4586cf2b95

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Akademický článek

Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques

Autor: Renata F. Leoni, Kelley C. Mazzetto-Betti, Afonso C. Silva, Antonio C. dos Santos, Draulio B. de Araujo, João P. Leite, Octavio M. Pontes-Neto

Publikováno v: Radiology Research and Practice, Vol 2012 (2012)

Impaired cerebrovascular reactivity (CVR), a predictive factor of imminent stroke, has been shown to be associated with carotid steno-occlusive disease. Magnetic resonance imaging (MRI) techniques, such as blood oxygenation level-dependent (BOLD) and

Externí odkaz: https://doaj.org/article/b463d76b83ef446783836c0322b66f21

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Functional and structural brain connectivity in congenital deafness

Autor: Antonio Carlos da Silva Senra Filho, Renata F. Leoni, Karolyne Dell Ducas, Kaio Felippe Secchinato, Antonio Carlos dos Santos, Pedro Silva

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Several studies have been carried out to verify neural plasticity and the language process in deaf individuals. However, further investigations regarding the intrinsic brain organization on functional and structural neural networks derived from conge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12baf5a09e839282912d1ceecefab0a5
https://doi.org/10.1007/s00429-021-02243-6

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Non-classical behavior of the default mode network regions during an information processing task

Autor: Pedro Silva, Renata F. Leoni, Carlo Rondinoni

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The default mode network (DMN) efficient deactivation and suppressed functional connectivity (FC) during goal-directed tasks, which require attentional resources, have been considered essential to healthy brain cognition. However, recent studies have

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52e6c301fc5e4c0d822e9fa411489919
https://doi.org/10.1007/s00429-020-02143-1

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Contrast optimization in arterial spin labeling with multiple post-labeling delays for cerebrovascular assessment

Autor: Bernd Foerster, André Monteiro Paschoal, Renata F. Leoni, Octavio M. Pontes-Neto, Fernando Fernandes Paiva, Antonio Carlos dos Santos

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Improving the readout for arterial spin labeling with multiple post-labeling delays (multi-PLD ASL) through a flip angle (FA) sweep towards increasing contrast-to-noise ratio for long PLD images. Images were acquired from 20 healthy subjects and 14 p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::053cccb79c905cc4bde38ea794560047
https://doi.org/10.1007/s10334-020-00883-z

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Three-dimensional gradient and spin-echo readout for time-encoded pseudo-continuous arterial spin labeling: influence of segmentation factor and flow compensation

Autor: Renata F. Leoni, André Monteiro Paschoal, Matthias J.P. van Osch, Bruno F. Pastorello

Publikováno v: Magnetic Resonance in Medicine, 86(3), 1454-1462. WILEY
Magnetic Resonance in Medicine
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Purpose: To monitor the complete passage of the labeled blood through the vascular tree into tissue and improve the quantification of ASL maps, we evaluated the effect of 3D gradient and spin -echo (GRASE) readout segments on temporal SNR (tSNR) and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22c9eafcf47b422c1b4d253f0e6f8cf8
http://hdl.handle.net/1887/3277430

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Mononitrate Isosorbide as an Adjunctive Therapy in Schizophrenia: A Randomized Controlled Crossover Trial

Autor: Tiago M Guimarães, Rodrigo A. Bressan, Antonio Carlos dos Santos, Icaro Agenor Ferreira de Oliveira, João Paulo Machado-de-Sousa, José Alexandre de Souza Crippa, Mara R. C. Guimarães, Jaime Eduardo Cecílio Hallak, Acioly L.T. Lacerda, Serdar M. Dursun, Renata F. Leoni

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Background Schizophrenia is a complex disabling mental disorder, and many patients present poor response to available treatments. Accumulating evidence about the role of the glutamate/nitric oxide pathway in mediating the positive and negative sympto

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b9d335d2c124b67421d0c3aaa5fb328
https://pubmed.ncbi.nlm.nih.gov/33857028

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Advances in resting state fMRI acquisitions for functional connectomics

Autor: ĺcaro A.F. Oliveira, Prantik Kundu, Renata F. Leoni, Wietske van der Zwaag, Luisa Raimondo, Nikos Priovoulos, Jurjen Heij

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Raimondo, L, Oliveira, Ĺ A F, Heij, J, Priovoulos, N, Kundu, P, Leoni, R F & van der Zwaag, W 2021, ' Advances in resting state fMRI acquisitions for functional connectomics ', NeuroImage, vol. 243, 118503, pp. 1-13 . https://doi.org/10.1016/j.neuroimage.2021.118503
NeuroImage, Vol 243, Iss, Pp 118503-(2021)
NeuroImage, 243. Academic Press

Resting state functional magnetic resonance imaging (rs-fMRI) is based on spontaneous fluctuations in the blood oxygen level dependent (BOLD) signal, which occur simultaneously in different brain regions, without the subject performing an explicit ta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f8eda0012c032dd1704d8156c9ac779
https://pubmed.ncbi.nlm.nih.gov/34479041

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Semantic verbal fluency brain network: delineating a physiological basis for the functional hubs using dual-echo ASL and graph theory approach

Autor: Pedro Silva, André Monteiro Paschoal, Isabella Velloso Arrigo, Renata F. Leoni, Carlo Rondinoni, Fernando Fernandes Paiva

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Objective Semantic verbal fluency (SFV) is a cognitive process that engages and modulates specific brain areas related to language comprehension and production, decision making, response inhibition, and memory retrieval. The impairment of the brain n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9d3ada0fb9b619a348f85beef5c5c01

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