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Your search keyword '"MESH : Cerebrovascular Circulation"' showing total 2 results
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2 results on '"MESH : Cerebrovascular Circulation"'

1. Brain voice processing with bilateral cochlear implants: a positron emission tomography study

Author

Evelyne Ferrary, Yves Samson, Isabelle Mosnier, Emmanuèle Ambert-Dahan, Jean-Luc Martinot, Didier Bouccara, Arnaud Coez, Olivier Sterkers, Eric Bizaguet, Monica Zilbovicius, Equipe Perception et cognition musicales, Sciences et Technologies de la Musique et du Son (STMS), Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Réhabilitation Chirurgicale mini-Invasive et Robotisée de l'Audition, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service d'oto-rhino-laryngologie, Hôpital Beaujon [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7), Institut Claude Bernard - Physiologie et Pathologie ((IFR_2)), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193 (SCALab), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Neuroimagerie en psychiatrie (U1000), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Sud - Paris 11 (UP11), Equipe NEMESIS - Centre de Recherches de l'Institut du Cerveau et de la Moelle épinière (NEMESIS-CRICM), Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Sciences et Technologies de la Musique et du Son ( STMS ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -IRCAM-Centre National de la Recherche Scientifique ( CNRS ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -IRCAM-Centre National de la Recherche Scientifique ( CNRS ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ), Service ORL, CHU Pitié-Salpêtrière [APHP], Assistance publique - Hôpitaux de Paris (AP-HP)-Université Paris Diderot - Paris 7 ( UPD7 ) -Hôpital Beaujon, Institut Claude Bernard - Physiologie et Pathologie, Assistance publique - Hôpitaux de Paris (AP-HP)-Université Paris Diderot - Paris 7 ( UPD7 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193 ( SCALab ), Université de Lille-Centre National de la Recherche Scientifique ( CNRS ), Neuroimagerie en psychiatrie ( U1000 ), Université Paris-Sud - Paris 11 ( UP11 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Paris Descartes - Paris 5 ( UPD5 ), Equipe NEMESIS - Centre de Recherches de l'Institut du Cerveau et de la Moelle épinière ( NEMESIS-CRICM ), Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière ( CRICM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ), Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-Hôpital Beaujon [AP-HP], Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)

Subjects
Male, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, medicine.medical_treatment, [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing, Sound perception, Audiology, Monaural, MESH : Voice, [ INFO.INFO-CV ] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], MESH: Cochlear Implants, MESH: Auditory Perceptual Disorders, 0302 clinical medicine, Hearing, Cochlear implant, [ INFO.INFO-TI ] Computer Science [cs]/Image Processing, MESH : Female, 030223 otorhinolaryngology, [ SDV.IB.IMA ] Life Sciences [q-bio]/Bioengineering/Imaging, [ INFO.INFO-IM ] Computer Science [cs]/Medical Imaging, MESH: Cerebrovascular Circulation, General Medicine, MESH : Adult, Cochlear Implantation, Temporal Lobe, MESH: Positron-Emission Tomography, MESH : Auditory Perceptual Disorders, MESH: Voice, MESH : Hearing Loss, Bilateral, Cerebrovascular Circulation, [ SDV.NEU.NB ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV], Speech Perception, Female, MESH : Speech Perception, MESH : Cochlear Implantation, MESH : Hearing, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, Adult, Sound localization, Auditory perception, medicine.medical_specialty, MESH : Male, MESH: Acoustic Stimulation, Sensory system, Hearing Loss, Bilateral, 03 medical and health sciences, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, otorhinolaryngologic diseases, medicine, Humans, MESH: Temporal Lobe, MESH: Hearing, MESH : Temporal Lobe, MESH: Humans, business.industry, Auditory Perceptual Disorders, MESH : Humans, MESH : Positron-Emission Tomography, [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], MESH: Adult, MESH : Acoustic Stimulation, MESH: Speech Perception, MESH: Hearing Loss, Bilateral, MESH: Male, Cochlear Implants, Acoustic Stimulation, MESH: Cochlear Implantation, Otorhinolaryngology, Positron-Emission Tomography, Voice, MESH : Cochlear Implants, MESH : Cerebrovascular Circulation, sense organs, Implant, business, MESH: Female, Binaural recording, 030217 neurology & neurosurgery
Abstract

International audience; Most cochlear implantations are unilateral. To explore the benefits of a binaural cochlear implant, we used water-labelled oxygen-15 positron emission tomography. Relative cerebral blood flow was measured in a binaural implant group (n = 11), while the subjects were passively listening to human voice sounds, environmental sounds non-voice or silence. Binaural auditory stimulation in the cochlear implant group bilaterally activated the temporal voice areas, whereas monaural cochlear implant stimulation only activated the left temporal voice area. Direct comparison of the binaural and the monaural cochlear implant stimulation condition revealed an additional right temporal activation during voice processing in the binaural condition and the activation of a right fronto-parietal cortical network during sound processing that has been implicated in attention. These findings provide evidence that a bilateral cochlear implant stimulation enhanced the spectral cues associated with sound perception and improved brain processing of voice stimuli in the right temporal region when compared to a monaural cochlear implant stimulation. Moreover, the recruitment of sensory attention resources in a right fronto-parietal network allowed patients with bilateral cochlear implant stimulation to enhance their sound discrimination, whereas the same patients with only one cochlear implant stimulation had more auditory perception difficulties.

Published
2013
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2. Perfusion-weighted MR imaging studies in brain hypervascular diseases: comparison of arterial input function extractions for perfusion measurement

Author

Ducreux, D., Buvat, I., Meder, J. F., David Mikulis, Crawley, A., Fredy, D., Terbrugge, K., Lasjaunias, P., Bittoun, J., Department of Neuroradiology, Université Paris-Sud - Paris 11 (UP11)-Hôpital Bicêtre, Laboratoire d'Imagerie Fonctionnelle (LIF), Université Pierre et Marie Curie - Paris 6 (UPMC)-IFR14-IFR49-Institut National de la Santé et de la Recherche Médicale (INSERM), Medical Imaging Department, Toronto Western Hospital, DIMF, Université Paris Descartes - Paris 5 (UPD5)-Centre Hospitalier Sainte-Anne, Unite de recherche en résonance magnétique médicale (U2R2M), Université Paris-Sud - Paris 11 (UP11)-Hôpital Bicêtre-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 ( UP11 ) -Hôpital Bicêtre, Laboratoire d'Imagerie Fonctionnelle ( LIF ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -IFR14-IFR49-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université Paris Descartes - Paris 5 ( UPD5 ) -Centre Hospitalier Sainte-Anne, Unite de recherche en résonance magnétique médicale ( U2R2M ), Université Paris-Sud - Paris 11 ( UP11 ) -Hôpital Bicêtre-Centre National de la Recherche Scientifique ( CNRS ), and Saidi, Vanessa

Subjects
Adult, Male, MESH: Blood Volume, Adolescent, MESH : Magnetic Resonance Angiography, MESH : Male, MESH : Prospective Studies, MESH: Magnetic Resonance Angiography, MESH : Cerebrovascular Disorders, MESH : Child, MESH : Adolescent, MESH: Child, Humans, MESH : Middle Aged, MESH : Female, Prospective Studies, [ SDV.IB ] Life Sciences [q-bio]/Bioengineering, Child, [SDV.IB] Life Sciences [q-bio]/Bioengineering, MESH: Adolescent, MESH : Blood Volume, Blood Volume, MESH: Middle Aged, MESH: Humans, MESH : Humans, Brain, MESH: Adult, MESH: Cerebrovascular Circulation, Middle Aged, MESH : Adult, MESH: Prospective Studies, MESH: Male, Cerebrovascular Disorders, Cerebrovascular Circulation, MESH : Cerebrovascular Circulation, Female, MESH: Cerebrovascular Disorders, [SDV.IB]Life Sciences [q-bio]/Bioengineering, MESH: Female, Magnetic Resonance Angiography
Abstract

BACKGROUND AND PURPOSE: Brain hypervascular diseases are complex and induce hemodynamic disturbances on brain parenchyma, which are difficult to accurately evaluate by using perfusion-weighted (PWI) MR imaging. Our purpose was to test and to assess the best AIF estimation method among 4 patients with brain hypervascular disease and healthy volunteers. METHODS: Thirty-three patients and 10 healthy volunteers underwent brain perfusion studies by using a 1.5T MR imaging scanner with gadolinium-chelate bolus injection. PWI was performed with the indicator dilution method. AIF estimation methods were performed with local, regional, regional scaled, and global estimated arterial input function (AIF), and PWI measurements (cerebral blood volume [CBV] and cerebral blood flow [CBF]) were performed with regions of interest drawn on the thalami and centrum semiovale in all subjects, remote from the brain hypervascular disease nidus. Abnormal PWI results were assessed by using Z Score, and evaluation of the best AIF estimation method was performed by using a no gold standard evaluation method. RESULTS: From 88% to 97% of patients had overall abnormal perfusion areas of hypo- (decreased CBV and CBF) and/or hyperperfusion (increased CBV and CBF) and/or venous congestion (increased CBV, normal or decreased CBF), depending on the AIF estimation method used for PWI computations. No gold standard evaluation of the 4 AIF estimates found the regional and the regional scaled methods to be the most accurate. CONCLUSION: Brain hypervascular disease induces remote brain perfusion abnormalities that can be better detected by using PWI with regional or regional scaled AIF estimation methods.

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