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Ghekiere O, Herbots L, Peters B, Berg BV, Dresselaers T, Franssen W, Padovani B, Ducreux D, Ferrari E, Nchimi A, Demanez S, De Bosscher R, Willems R, Heidbuchel H, La Gerche A, Claessen G, Bogaert J, Eijnde BO. Exercise-induced myocardial T1 increase and right ventricular dysfunction in recreational cyclists: a CMR study. Eur J Appl Physiol 2023; 123:2107-2117. [PMID: 37480391 PMCID: PMC10492712 DOI: 10.1007/s00421-023-05259-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/13/2023] [Indexed: 07/24/2023]
Abstract
PURPOSE Although cardiac troponin I (cTnI) increase following strenuous exercise has been observed, the development of exercise-induced myocardial edema remains unclear. Cardiac magnetic resonance (CMR) native T1/T2 mapping is sensitive to the pathological increase of myocardial water content. Therefore, we evaluated exercise-induced acute myocardial changes in recreational cyclists by incorporating biomarkers, echocardiography and CMR. METHODS Nineteen male recreational participants (age: 48 ± 5 years) cycled the 'L'étape du tour de France" (EDT) 2021' (175 km, 3600 altimeters). One week before the race, a maximal graded cycling test was conducted to determine individual heart rate (HR) training zones. One day before and 3-6 h post-exercise 3 T CMR and echocardiography were performed to assess myocardial native T1/T2 relaxation times and cardiac function, and blood samples were collected. All participants were asked to cycle 2 h around their anaerobic gas exchange threshold (HR zone 4). RESULTS Eighteen participants completed the EDT stage in 537 ± 58 min, including 154 ± 61 min of cycling time in HR zone 4. Post-race right ventricular (RV) dysfunction with reduced strain and increased volumes (p < 0.05) and borderline significant left ventricular global longitudinal strain reduction (p = 0.05) were observed. Post-exercise cTnI (0.75 ± 5.1 ng/l to 69.9 ± 41.6 ng/l; p < 0.001) and T1 relaxation times (1133 ± 48 ms to 1182 ± 46 ms, p < 0.001) increased significantly with no significant change in T2 (p = 0.474). cTnI release correlated with increase in T1 relaxation time (p = 0.002; r = 0.703), post-race RV dysfunction (p < 0.05; r = 0.562) and longer cycling in HR zone 4 (p < 0.05; r = 0.607). CONCLUSION Strenuous exercise causes early post-race cTnI increase, increased T1 relaxation time and RV dysfunction in recreational cyclists, which showed interdependent correlation. The long-term clinical significance of these changes needs further investigation. TRIAL REGISTRATION NUMBERS AND DATE NCT04940650 06/18/2021. NCT05138003 06/18/2021.
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Affiliation(s)
- Olivier Ghekiere
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium.
- Department of Radiology and Department of Jessa & Science, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium.
| | - Lieven Herbots
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium
- Heart Centre, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium
| | - Benjamin Peters
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium
- Department of Radiology and Department of Jessa & Science, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium
| | | | - Tom Dresselaers
- Department of Radiology, University Hospitals Leuven, Leuven, Belgium
| | - Wouter Franssen
- SMRC Sports Medical Research Center, BIOMED Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
- REVAL-Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Diepenbeek, Belgium
- Department of Nutrition and Movement Sciences; NUTRIM, School for Nutrition and Translation Research Maastricht, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | | | | | - Emile Ferrari
- Department of Cardiology, University Hospital Nice, Nice, France
| | - Alain Nchimi
- Department of Radiology, Centre Hospitalier Universitaire Luxembourg, Luxembourg, Luxembourg
| | - Sophie Demanez
- Department of Cardiology, Centre Cardiologique Orban, Liège, Belgium
| | - Ruben De Bosscher
- Department of Cardiology, University Hospitals Leuven, Leuven, Belgium
| | - Rik Willems
- Department of Cardiology, University Hospitals Leuven, Leuven, Belgium
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Hein Heidbuchel
- Department of Cardiovascular Sciences, University of Antwerp, Antwerp, Belgium
- Department of Cardiology, University Hospital Antwerp, Antwerp, Belgium
| | - Andre La Gerche
- Department of Cardiology, Baker Heart and Diabetes Institute, Melbourne, Australia
| | - Guido Claessen
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium
- Heart Centre, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium
| | - Jan Bogaert
- Department of Radiology, University Hospitals Leuven, Leuven, Belgium
| | - Bert O Eijnde
- SMRC Sports Medical Research Center, BIOMED Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
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Hodel J, Leclerc X, Zuber M, Gerber S, Besson P, Marcaud V, Roubeau V, Brasme H, Ganzoui I, Ducreux D, Pruvo JP, Bertoux M, Zins M, Lopes R. Structural Connectivity and Cortical Thickness Alterations in Transient Global Amnesia. AJNR Am J Neuroradiol 2020; 41:798-803. [PMID: 32381542 DOI: 10.3174/ajnr.a6530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 03/12/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Transient global amnesia (TGA) is a sudden onset of anterograde and retrograde amnesia. We aimed to assess differences in terms of cortical thickness and structural brain connectome between patients with TGA (at acute and delayed postrecovery stages) and matched controls. MATERIALS AND METHODS We report on 18 consecutive patients with TGA who underwent 3T MR imaging, including DTI and MPRAGE sequences, at the acute (mean delay postonset: 44 hours) and delayed post-recovery (mean delay: 35 days) stages. Structural connectome was assessed in patients with TGA and in 18 age- and sex-matched controls by using probabilistic fiber- tracking and segmentation of 164 cortical/subcortical structures ("nodes"). Connectivity graphs were computed and global network metrics were calculated. Network-based statistical analysis (NBS) was applied to compare patients with TGA at each stage with controls. We also compared cortical thickness between patients with TGA and healthy controls. RESULTS Global network metrics were not altered in patients with TGA. NBS-analysis showed structural connectome alterations in patients with TGA compared with controls, in core regions involving the limbic network, with 113 nodes and 114 connections (33 left intrahemispheric, 31 right intrahemispheric, and 50 interhemispheric connections) showing significantly decreased structural connectivity (P < .05 NBS corrected, t-values ranging from 3.03 to 8.73). Lower cortical thickness compared with controls was associated with these structural alterations in patients with TGA, involving the orbitofrontal, cingulate, and inferior temporal cortices. All the abnormalities were visible at both acute and delayed postrecovery stages. CONCLUSIONS Our preliminary study suggests there are structural abnormalities of the limbic network in patients with TGA compared with controls, including decreased structural connectivity and cortical thickness.
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Affiliation(s)
- J Hodel
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - X Leclerc
- Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France
| | - M Zuber
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France.,INSERM UMR S919 (M.Z.), Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - S Gerber
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - P Besson
- Department of Radiology (P.B.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois
| | - V Marcaud
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France
| | - V Roubeau
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France
| | - H Brasme
- Neurology (M.Z., V.M., V.R., H.B.), Saint Joseph Hospital, Paris, France
| | - I Ganzoui
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - D Ducreux
- Department of Neuroradiology (D.D.), Bicêtre Hospital, Kremlin-Bicêtre, France
| | - J-P Pruvo
- Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France
| | - M Bertoux
- University of Lille (M.B., R.L.), Inserm U1171, CHU Lille, F-59000, Lille, France
| | - M Zins
- From the Departments of Radiology (J.H., S.G., I.G., M.Z.)
| | - R Lopes
- Department of Neuroradiology (X.L., J.-P.P., R.L.), Roger Salengro Hospital, Lille, France.,University of Lille (M.B., R.L.), Inserm U1171, CHU Lille, F-59000, Lille, France
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Faillot M, Herbrecht A, Ducreux D, Delphine S, Morar S, Parker F, Aghakhani N. Fentes médullaires et syringomyélies, est-il possible de les différencier ? Neurochirurgie 2019. [DOI: 10.1016/j.neuchi.2019.03.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Puccinelli F, Deiva K, Bellesme C, Durand P, Chevret L, Husson B, Sachet M, Ducreux D, Saliou G. Cerebral venous thrombosis after embolization of pediatric AVM with jugular bulb stenosis or occlusion: management and prevention. Eur J Paediatr Neurol 2014; 18:766-73. [PMID: 25130940 DOI: 10.1016/j.ejpn.2014.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 06/29/2014] [Accepted: 07/16/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE Thrombosis of cerebral arteriovenous malformation after embolization is rare, but can involve the normal venous network with extensive venous thrombosis. We report angioarchitecture findings, our management and prevention strategy for this complication in pediatric AVMs. METHODS In this 5.5-year retrospective series, we reviewed records of 13 patients under 15 years who were anticoagulated after embolization. In our initial experience 4 children who didn't receive any prophylactic anticoagulation presented with extensive venous thrombosis after embolization (group 1). Following this, nine children with similar angioarchitecture and embolization modalities were treated with prophylactic anticoagulation immediately after embolization (group 2). We analyzed the type of AVM, angioarchitecture, dose of prophylactic anticoagulant, efficacy/complications of treatment and late outcome. RESULTS All patients in group 1 had severe jugular bulb stenosis/occlusion associated with cerebral venous dilatation. In group 2 with similar angioarchitecture, only three patients (33%) developed extensive thrombosis. In both groups, thrombosis occurred within two days of treatment in six children and two weeks in one child. The diagnosis was suspected on intracranial hypertension in five patients and occulomotor disorder in one. One was asymptomatic. All children were treated with therapeutic doses of LMWH (anti-Xa: 0.5-1). No hemorrhagic complications occurred. Good venous remodeling was observed in all but one patient. CONCLUSION Anticoagulation in extensive venous thrombosis after AVM embolization in children appears to be safe and effective. In cases with angioarchitectural features of dilatation of the cerebral venous network and occlusion/severe stenosis of the jugular bulbs, full dose anticoagulation may be required to prevent thrombosis.
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Affiliation(s)
- F Puccinelli
- Service de Neuroradiologie, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France; National Referral Center for Neurovascular Malformations in Children, France
| | - K Deiva
- Service de Neurologie pédiatrique, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France
| | - C Bellesme
- Service de Neurologie pédiatrique, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France
| | - P Durand
- Service de Réanimation pédiatrique, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France
| | - L Chevret
- Service de Réanimation pédiatrique, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France
| | - B Husson
- Service de Radiologie pédiatrique, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France
| | - M Sachet
- Service de Neuroradiologie, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France; National Referral Center for Neurovascular Malformations in Children, France
| | - D Ducreux
- Service de Neuroradiologie, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France; National Referral Center for Neurovascular Malformations in Children, France
| | - G Saliou
- Service de Neuroradiologie, CHU Bicêtre, 78 rue du General Leclerc, 94275 Le Kremlin Bicêtre Cedex, France; National Referral Center for Neurovascular Malformations in Children, France.
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Saliou G, Tej A, Theaudin M, Tardieu M, Ozanne A, Sachet M, Ducreux D, Deiva K. Risk factors of hematomyelia recurrence and clinical outcome in children with intradural spinal cord arteriovenous malformations. AJNR Am J Neuroradiol 2014; 35:1440-6. [PMID: 24627450 DOI: 10.3174/ajnr.a3888] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Few published data are available concerning the risk of re-bleeding of spinal cord AVM after an hematomyelia and concerning the long-term clinical outcome. Our aim was to assess the risk of recurrence and long-term clinical outcome after hematomyelia in children with spinal cord AVMs. MATERIALS AND METHODS This single-center retrospective study reviewed the clinical and radiologic data of 28 children younger than 18 years of age with arteriovenous malformation who had experienced at least 1 episode of hematomyelia between 1988 and 2012. Long-term clinical outcome was assessed by the American Spinal Injury Association Impairment Scale, and radiologic review included MR imaging and angioarchitecture on angiography (blinded to clinical information) before treatment and at recurrence. RESULTS Sixteen children (57%) experienced 1 episode of hematomyelia, while 12 children (43%) experienced recurrence. Girls and boys were equally affected (sex ratio, 1:1), and mean clinical follow-up was 5.7 ± 4.4 years. The risk of recurrence was higher for AVMs of the cervical and upper thoracic spine, 12 (100%) versus 11 (69%) (P = .01). A high American Spinal Injury Association scale score at last follow-up was reported for 11 children (39%), and the risk of recurrence tended to be associated with poorer functional prognosis (7 [64%] versus 5 [29%], P = .07). At the time of recurrence, perimedullary venous drainage was the main factor associated with recurrence (P = .002). Occlusion rate ≥50% was associated with a decreased risk of recurrence (P = .047). CONCLUSIONS In the present series, cervical and upper thoracic spinal cord AVMs and microarchitecture were predictive of the risk of hematomyelia recurrence. Perimedullary venous drainage was one of the main parameters associated with recurrence. Functional prognosis was better in patients with a single episode of hematomyelia.
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Affiliation(s)
- G Saliou
- From the Service de Neuroradiologie (G.S., M.S., D.D., A.O.)
| | - A Tej
- Service de Neurologie Pédiatrique (A.T., M. Tardieu, K.D.)
| | - M Theaudin
- Service de Neurologie (M. Theaudin), Centre Hospitalier Universitaire Bicêtre, National Referral Center for Neurovascular Malformations in Children, Le Kremlin Bicêtre Cedex, France
| | - M Tardieu
- Service de Neurologie Pédiatrique (A.T., M. Tardieu, K.D.)
| | - A Ozanne
- From the Service de Neuroradiologie (G.S., M.S., D.D., A.O.)
| | - M Sachet
- From the Service de Neuroradiologie (G.S., M.S., D.D., A.O.)
| | - D Ducreux
- From the Service de Neuroradiologie (G.S., M.S., D.D., A.O.)
| | - K Deiva
- Service de Neurologie Pédiatrique (A.T., M. Tardieu, K.D.)
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Depuydt S, Sarov M, Vandendries C, Guedj T, Cauquil C, Assayag P, Lambotte O, Ducreux D, Denier C. Significance of acute multiple infarcts in multiple cerebral circulations on initial diffusion weighted imaging in stroke patients. J Neurol Sci 2014; 337:151-5. [DOI: 10.1016/j.jns.2013.11.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 11/20/2013] [Accepted: 11/25/2013] [Indexed: 11/26/2022]
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Hodel J, Besson P, Outteryck O, Zéphir H, Ducreux D, Monnet A, Chéchin D, Zins M, Rodallec M, Pruvo JP, Vermersch P, Leclerc X. Pulse-triggered DTI sequence with reduced FOV and coronal acquisition at 3T for the assessment of the cervical spinal cord in patients with myelitis. AJNR Am J Neuroradiol 2012; 34:676-82. [PMID: 22918433 DOI: 10.3174/ajnr.a3254] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE DTI is a promising technique for imaging of the spinal cord, but the technique has susceptibility-induced artifacts. We evaluated a pulse-triggered DTI sequence with an rFOV technique and coronal acquisition for the assessment of the cervical spinal cord in patients with myelitis at 3T. MATERIALS AND METHODS A rFOV acquisition was established by a noncoplanar application of the excitation and the refocusing pulse in conjunction with outer volume suppression. The DTI sequence was performed in the coronal plane in 12 healthy volunteers and 40 consecutive patients with myelitis. Probabilistic tractography of the posterior and lateral funiculi was performed from the C1 to C7 levels. FA, MD, aD, rD, and ratios of aD and rD were measured. RESULTS In healthy volunteers, mean DTI indices within the whole-fiber pathways were the following: FA = 0.61, MD = 1.17 × 10(-3) mm(2)/s, aD = 1.96 × 10(-3) mm(2)/s, rD = 0.77 × 10(-3) mm(2)/s, and ratios of aD and rD = 2.5. Comparison of healthy controls and patients with myelitis identified statistically significant differences for all DTI parameters. Different patterns of myelitis, including spinal cord atrophy and active inflammatory lesions, were recognized. There was a significant correlation between clinical severity and DTI parameters. CONCLUSIONS The present work introduces a new approach for DTI of the cervical spinal cord at 3T, enabling a quantitative follow-up of patients with myelitis.
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Affiliation(s)
- J Hodel
- Department of Neuroradiology, CHU Salengro, Lille, France.
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Cauquil C, Souillard-Scemama R, Labetoulle M, Adams D, Ducreux D, Denier C. Diffusion MRI and tensor tractography in ischemic optic neuropathy. Acta Neurol Belg 2012; 112:209-11. [PMID: 22426658 DOI: 10.1007/s13760-012-0013-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 08/25/2011] [Indexed: 11/29/2022]
Abstract
Ischemic optic neuropathies (IONs) are among the most prevalent diseases causing visual impairment in middle-aged and elderly people. While arteritic ION is an ocular emergency and requires early diagnosis and immediate treatment with systemic high-dose corticosteroids to prevent further visual loss, treatment options for non-arteritic ION remain limited. We describe the case of a woman with unilateral right-sided non-arteritic posterior ischemic optic neuropathy. The diagnosis was made on clinical and radiographic grounds. Diffusion-weighted sequences and apparent diffusion coefficient maps revealed markedly restricted diffusion in the right optic nerve. It was very helpful to precise the posterior topography of the optic nerve lesion. Furthermore, we reported the diffusion tensor tractography study which appears to be an objective tool to assess the incomplete visual recovery. These MRI techniques including tensor tractography remain to be evaluated in large cohort of ION patients' particularly in future therapeutic trials.
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Affiliation(s)
- C Cauquil
- Department of Neurology, Centre Hospitalo-Universitaire de Bicêtre, Assistance Publique-Hôpitaux de Paris, 78 rue du Général Leclerc, 94275 Le Kremlin-Bicêtre Cedex, France
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Melki E, Denier C, Théaudin-Saliou M, Sachet M, Ducreux D, Saliou G. External carotid artery branches involvement in reversible cerebral vasoconstriction syndrome. J Neurol Sci 2012; 313:46-7. [DOI: 10.1016/j.jns.2011.09.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 09/22/2011] [Accepted: 09/27/2011] [Indexed: 10/16/2022]
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Van Went C, Ozanne A, Saliou G, Dethorey G, De Monchy I, Krings T, Ducreux D, Labetoulle M. Spontaneous thrombosis of an orbital arteriovenous malformation revealing hereditary haemorrhagic telangiectasia (Rendu-Osler-Weber disease). A case report. Interv Neuroradiol 2011; 17:466-71. [PMID: 22192551 DOI: 10.1177/159101991101700411] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 10/01/2011] [Indexed: 11/16/2022] Open
Abstract
Hereditary Haemorrhagic Telangiectasia (HHT) is a genetic disorder responsible for cutaneous or mucosal telangiectasia and arteriovenous malformations (AVMs). The most frequent locations are lung and brain. In contrast, orbital AVMs are very rare. We describe a case of symptomatic orbital arteriovenous malformation due to spontaneous thrombosis. A 65-year-old woman was referred for chronic right eye proptosis associated with dilation of conjunctival vessels with a jellyfish pattern. Right visual acuity was 20/40 and intraocular pressure was 40 mmHg. Personal and familial history of recurrent epistaxis, associated with multiple telangiectasia within lips and palate, led to the diagnosis of HHT. Magnetic resonance imaging (MRI) completed with cerebral angiography found a giant and occluded AVM within the right orbit. Other AVMs were also found in brain and chest, confirming the diagnosis. Antiglaucomatous eyedrops were added to reduce intraocular pressure and a steroid therapy was begun. Two months later, visual acuity decreased in the right eye, due to a central retinal vein thrombosis. In conclusion, Most brain or pulmonary AVM can be treated by embolization. By contrast, this treatment in case of orbital location can lead to central retinal artery and/or central retinal vein occlusion, which may also appear as a spontaneous complication of the orbital AVM. Therapeutic management of orbital AVM is thus not standardized, and the balance between spontaneous and iatrogenic risk of visual loss has to be taken into account.
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Affiliation(s)
- Charles Van Went
- Ophthalmology Department, Hopital des Quinze-Vingts, Paris, France.
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Toulgoat F, Benoudiba F, Saliou G, Ducreux D, Desal HA. Urgences vasculaires cervicofaciales. ACTA ACUST UNITED AC 2011; 92:1041-9. [DOI: 10.1016/j.jradio.2011.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 08/25/2011] [Indexed: 12/01/2022]
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dos Santos M, Fayard F, Ghorbel I, Frattici A, Domont J, Laplanche A, Bidault F, Ducreux D, Dhermain F, Bourhis J. 2003 ORAL Perfusion and Permeability Study in High Grade Glioma Patients: Implications on Outcome and Importance of Steroids Uptake Before Radiotherapy. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70961-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bidault F, Sahnoun M, de La Motte Rouge T, Rousseau V, Domont J, Massard C, Dhermain F, Ducreux D, Laplanche A, Caramella C, Canale S, Balleyguier C, Boulet B, Dromain C. High-grade gliomas treated with bevacizumab: Assessment of tumor response with functional MR. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e12505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Flamand-Roze C, Cauquil-Michon C, Roze E, Souillard-Scemama R, Maintigneux L, Ducreux D, Adams D, Denier C. Aphasia in border-zone infarcts has a specific initial pattern and good long-term prognosis. Eur J Neurol 2011; 18:1397-401. [PMID: 21554494 DOI: 10.1111/j.1468-1331.2011.03422.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND While border-zone infarcts (BZI) account for about 10% of strokes, studies on related aphasia are infrequent. The aim of this work was to redefine specifically their early clinical pattern and evolution. METHODS We prospectively studied consecutive patients referred to our stroke unit within a 2-year period. Cases of aphasia in right-handed patients associated with a MRI confirmed left-sided hemispheric BZI were included. These patients had a standardized language examination in the first 48 h, at discharge from stroke unit and between 6 and 18 months later. RESULTS Eight patients were included. Three had anterior (MCA/ACA), two posterior (MCA/PCA), two both anterior and posterior, and one bilateral BZI. All our patients initially presented transcortical mixed aphasia, characterized by comprehension and naming difficulties associated with preserved repetition. In all patients, aphasia rapidly improved. It fully recovered within a few days in three patients. Initial improvement was marked, although incomplete in the five remaining patients: their aphasias specifically evolved according to the stroke location toward transcortical motor aphasia for the three patients with anterior BZI and transcortical sensory aphasia for the two patients with posterior BZI. All patients made a full language recovery within 18 months after stroke. CONCLUSIONS We report a specific aphasic pattern associated with hemispheric BZI, including an excellent long-term outcome. These findings appear relevant to (i) clinically suspect BZI and (ii) plan rehabilitation and inform the patient and his family of likelihood of full language recovery.
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Affiliation(s)
- C Flamand-Roze
- Service de neurologie, CHU Bicêtre, AP-HP, Le Kremlin Bicêtre, France.
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15
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Ducreux D, Lacour M, Cazejust J, Benoudiba F, Sarrazin J. [Traumatic cord and nerve root injuries: imaging features at the acute and chronic phases]. ACTA ACUST UNITED AC 2010; 91:1010-21. [PMID: 20814392 DOI: 10.1016/s0221-0363(10)70146-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cord injuries are frequent and severe lesions resulting in significant disability, most frequently in younger subjects. The area of cord injured results in clinical syndromes (Brown-Sequard, motor and/or sensory deficit...). Cord and rootlet injuries are best depicted on MRI. Diffusion tensor imaging with tractography enables depiction of the most severe cord lesions and some prediction of tissue viability which may provide an idea of the potential functional prognosis and patient recovery. MRI is optimal to demonstrate areas of cord hemorrhage or compression, partial or complete cord transsection, nerve root avulsion...
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Affiliation(s)
- D Ducreux
- Service de Neuroradiologie, CHU Bicêtre, 78 rue du Général Leclerc, 94270 Le Kremlin Bicêtre, France.
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16
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Liang F, Ozanne A, Offret H, Ducreux D, Labetoulle M. An atypical case of Foster Kennedy syndrome. Interv Neuroradiol 2010; 16:429-32. [PMID: 21162773 DOI: 10.1177/159101991001600409] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Accepted: 08/22/2010] [Indexed: 11/17/2022] Open
Abstract
Foster-Kennedy syndrome was described in 1911 as an ophthalmologic manifestation of compression by a solid tumor in the frontal area with intracranial hypertension (ICHT). We describe a peculiar case of Foster-Kennedy syndrome associated with an arteriovenous malformation in which neither optic nerve compression nor ICHT was obvious. We discuss the different pathogenic mechanisms to explain this case, for which a chronic venous hypertension was the most probable etiology.
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Affiliation(s)
- F Liang
- Department of Ophthalmology, Centre Hospitalier Universitaire de Bicêtre, Université Paris Sud, Kremlin Bicêtre, France
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17
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Hatem SM, Attal N, Ducreux D, Gautron M, Parker F, Plaghki L, Bouhassira D. Clinical, functional and structural determinants of central pain in syringomyelia. Brain 2010; 133:3409-22. [DOI: 10.1093/brain/awq244] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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18
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Liacu D, de Marco G, Ducreux D, Bouilleret V, Masnou P, Idy-Peretti I. Diffusion tensor changes in epileptogenic hippocampus of TLE patients. Neurophysiol Clin 2010; 40:151-7. [DOI: 10.1016/j.neucli.2010.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Revised: 12/05/2009] [Accepted: 01/17/2010] [Indexed: 10/19/2022] Open
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19
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Dhermain F, Ducreux D. 81 poster: Microvascular Leakage and Contrast Enhancement are Prognostic Factors in Unfavorable Low-Grade Gliomas. Radiother Oncol 2010. [DOI: 10.1016/s0167-8140(10)80015-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Toulgoat F, Adams D, Nasser G, Ducreux D, Denier C. Intracerebral Hemorrhage Caused by Thrombosis of Developmental Venous Anomaly: Total Recovery following Anticoagulation. Eur Neurol 2010; 63:254-5. [PMID: 20375516 DOI: 10.1159/000277514] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 01/11/2010] [Indexed: 11/19/2022]
Affiliation(s)
- F Toulgoat
- Department of Neuroradiology, Bicêtre Hospital, Assistance Publique - Hôpitaux de Paris, Le Kremlin-Bicêtre, France
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21
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Hatem SM, Attal N, Ducreux D, Gautron M, Parker F, Plaghki L, Bouhassira D. Assessment of spinal somatosensory systems with diffusion tensor imaging in syringomyelia. J Neurol Neurosurg Psychiatry 2009; 80:1350-6. [PMID: 19535353 DOI: 10.1136/jnnp.2008.167858] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE The use of diffusion tensor imaging with three-dimensional fibre tracking (DTI-FT) was tested for the assessment of spinal sensory tract lesions. The relationships between tract lesions quantified with DTI-FT were systematically examined, and somatosensory dysfunction was assessed with quantitative sensory testing (QST) and laser-evoked potentials (LEP), in patients with syringomyelia. METHODS 28 patients with cervical syringomyelia and thermosensory impairment of the hands, and 19 healthy volunteers, were studied. A DTI-FT of the spinal cord was performed, focusing on the upper segment (C3-C4) of the syrinx. Three-dimensional DTI-FT parameters (fractional anisotropy (FA) and apparent diffusion coefficient (ADC)) of the full, anterior and posterior spinal cord were individually compared with QST (thermal detection thresholds) and LEP (amplitude, latency and spinothalamic tract (STT) conduction time) of the hands. RESULTS Patients had a significantly lower FA, but not ADC, than healthy subjects. The mean FA of the full section of the spinal cord was correlated both to sensory deficits (ie, increase in warm (rho = -0.63, p<0.010) and cold thresholds (rho = -0.72; p<0.001 of the hands)) and to changes in LEP parameters, in particular STT conduction time (rho = -0.75; p<0.010). Correlations between FA and the clinical and electrophysiological measures were higher in the anterior area (where the spinothalamic tracts are located) than in the posterior area of the spinal cord. CONCLUSIONS The data indicate that diffusion tensor imaging with 3D-fibre tracking is a new imaging method suitable for the objective and quantitative anatomical assessment of spinal somatosensory system dysfunction.
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Affiliation(s)
- S M Hatem
- INSERM-U792, CHUAmbroise Paré, APHP, Boulogne-Billancourt, France
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22
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Padovani B, Ducreux D, Macario S, Maillard M, Iannessi A, Brunner P, Mouroux J. Imagerie du thorax post-opératoire : les aspects normaux. ACTA ACUST UNITED AC 2009; 90:991-1000. [DOI: 10.1016/s0221-0363(09)73237-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Roze E, Bounolleau P, Ducreux D, Cochen V, Leu-Semenescu S, Beaugendre Y, Lavallard-Rousseau MC, Blancher A, Bourdain F, Dupont P, Carluer L, Verdure L, Vidailhet M, Apartis E. Propriospinal myoclonus revisited: Clinical, neurophysiologic, and neuroradiologic findings. Neurology 2009; 72:1301-9. [DOI: 10.1212/wnl.0b013e3181a0fd50] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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24
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Labetoulle M, Nasser G, Gendron G, De Monchy I, Ducreux D, Benoudiba F, Offret H. 162 Imagerie tensorielle de diffusion par résonance magnétique et dépistage des anomalies des fibres des nerfs trijumeaux dans les kérato-uvéites herpétique récidivantes. J Fr Ophtalmol 2009. [DOI: 10.1016/s0181-5512(09)73290-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Dhermain F, Ducreux D, Parker F, Page P, Hoang-Xuan K, Lacroix C, Daumas-Duport C, Lasjaunias P, Tournay E, Bourhis J. Gliomes de bas grade : importance de la perfusion et de la perméabilité dans la prédiction des rechutes. Cancer Radiother 2008. [DOI: 10.1016/j.canrad.2008.08.245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Castelli J, Thariat J, Benezery K, Padovani B, Ducreux D, Venissac N, Poudenx M, Otto J, Mouroux J, Bondiau PY. [Feasibility and efficacy of cyberknife radiotherapy for lung cancer: early results]. Cancer Radiother 2008; 12:793-9. [PMID: 18706844 DOI: 10.1016/j.canrad.2008.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Revised: 06/03/2008] [Accepted: 06/08/2008] [Indexed: 12/25/2022]
Abstract
PURPOSE High-dose robotic stereotactic irradiation can be achieved with high precision using the CyberknifeM system equipped with the Synchrony respiratory tracking device. Cyberknife irradiation can overcome some limitations of conventional radiotherapy including errors due to breathing motion and patient setup. High dose levels are of interest for tumours that have shown a dose-response relationship including lung tumours. We reviewed the treatments and outcomes for the first French patients with lung tumours treated at the Cyberknife centre of Nice. PATIENTS AND METHODS Thirty four patients were treated between November 2006 and November 2007 at the Cyberknife centre of Nice, Centre Lacassagne, France. Thirty had untreated primary lung cancer, 4 had colorectal metastasis to the lung. We evaluated the feasibility and reliability of fiducial placement, toxicity and early outcomes. Objective tumour response was assessed on thoracic CT scan every three months. RESULTS There was no grade 3-4 toxicity. Toxicity (11%) mainly consisted of grade 1-2 asthenia. Crude overall tumour response rate was 96% for all assessable patients and 91% at 3 and 6 months, respectively. The use of one fiducial ensured minimal toxicity (no grade III pneumothorax) while allowing reliable tumour tracking as shown by the low infield failure rate (no geographic miss). Diagnostic procedure was performed during fiducial placement when required. CONCLUSION Early toxicity and tumour control rates from this population suggest that the use of a unique fiducial for a Cyberknife treatment was safe and effective for the treatment of selected primary and secondary lung tumours. This strategy is corroborated by similar control rates in the literature. Longer follow-up are awaited.
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Affiliation(s)
- J Castelli
- Département de radiothérapie, centre Antoine-Lacassagne, 33, avenue de Valombrose, 06189 Nice cedex 02, France.
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27
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Rutgers DR, Fillard P, Paradot G, Tadié M, Lasjaunias P, Ducreux D. Diffusion tensor imaging characteristics of the corpus callosum in mild, moderate, and severe traumatic brain injury. AJNR Am J Neuroradiol 2008; 29:1730-5. [PMID: 18617586 DOI: 10.3174/ajnr.a1213] [Citation(s) in RCA: 167] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The corpus callosum is an important predilection site for traumatic axonal injury but may be unevenly affected in head trauma. We hypothesized that there were local differences in axonal injury within the corpus callosum as investigated with diffusion tensor imaging (DTI), varying among patients with differing severity of traumatic brain injury (TBI). MATERIALS AND METHODS Ethics committee approval and informed consent were obtained. Ten control subjects (7 men, 3 women; mean age, 37 +/- 9 years) and 39 patients with TBI (27 men, 12 women; 34 +/- 12 years) were investigated, of whom 24 had mild; 9, moderate; and 6, severe TBI. Regions of interest were selected in the callosal genu, body, and splenium to calculate fractional anisotropy (FA), apparent diffusion coefficient (ADC), and the number of fibers passing through. Statistical comparison was made through analysis of variance with the Scheffé post hoc analysis. RESULTS Compared with controls, patients with mild TBI investigated <3 months posttrauma (n = 12) had reduced FA (P < .01) and increased ADC (P < .05) in the genu, whereas patients with mild TBI investigated > or =3 months posttrauma (n = 12) showed no significant differences. Patients with moderate and severe TBI, all investigated <3 months posttrauma, had reduced FA (P < .001) and increased ADC (P < .01) in the genu compared with controls and reduced FA in the splenium (P < .001) without significant ADC change. CONCLUSION Mild TBI is associated with DTI abnormalities in the genu <3 months posttrauma. In more severe TBI, both the genu and splenium are affected. DTI suggests a larger contribution of vasogenic edema in the genu than in the splenium in TBI.
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Affiliation(s)
- D R Rutgers
- Department of Neuroradiology, Le Centre hospitalier universitaire de Bicêtre, Le Kremlin Bicêtre, France
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28
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Rutgers DR, Toulgoat F, Cazejust J, Fillard P, Lasjaunias P, Ducreux D. White matter abnormalities in mild traumatic brain injury: a diffusion tensor imaging study. AJNR Am J Neuroradiol 2008; 29:514-9. [PMID: 18039754 DOI: 10.3174/ajnr.a0856] [Citation(s) in RCA: 191] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Traumatic axonal injury is a primary brain abnormality in head trauma and is characterized by reduction of fractional anisotropy (FA) on diffusion tensor imaging (DTI). Our hypothesis was that patients with mild traumatic brain injury (TBI) have widespread brain white matter regions of reduced FA involving a variety of fiber bundles and show fiber disruption on fiber tracking in a minority of these regions. MATERIALS AND METHODS Ethics committee approval and informed consent were obtained. Twenty-one patients with mild TBI were investigated (men:women, 12:9; mean age +/- SD, 32 +/- 9 years). In a voxel-based comparison with 11 control subjects (men:women, 8:3; mean age, 37 +/- 9 years) using z score analysis, patient regions with abnormally reduced FA were defined in brain white matter. MR imaging, DTI, and fiber tracking characteristics of these regions were described and analyzed using Pearson correlation, linear regression analysis, or the chi(2) test when appropriate. RESULTS Patients had on average 9.1 regions with reduced FA, with a mean region volume of 525 mm(3), predominantly found in cerebral lobar white matter, cingulum, and corpus callosum. These regions mainly involved supratentorial projection fiber bundles, callosal fibers, and fronto-temporo-occipital association fiber bundles. Internal capsules and infratentorial white matter were relatively infrequently affected. Of all of the involved fiber bundles, 19.3% showed discontinuity on fiber tracking. CONCLUSION Patients with mild TBI have multiple regions with reduced FA in various white matter locations and involving various fiber bundles. A minority of these fiber bundles show discontinuity on fiber tracking.
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Affiliation(s)
- D R Rutgers
- Department of Neuroradiology, Centre Hospitalo-Universitaire de Bicêtre, Bicêtre, France
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29
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30
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Ozanne A, Krings T, Facon D, Fillard P, Dumas JL, Alvarez H, Ducreux D, Lasjaunias P. MR diffusion tensor imaging and fiber tracking in spinal cord arteriovenous malformations: a preliminary study. AJNR Am J Neuroradiol 2007; 28:1271-9. [PMID: 17698527 PMCID: PMC7977675 DOI: 10.3174/ajnr.a0541] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND PURPOSE Diffusion tensor imaging (DTI) of the spinal cord in patients harboring spinal arteriovenous malformations (AVMs) was carried out to evaluate the feasibility of this new technique to determine the displacement of the spinal cord tracts and to correlate morphologic and functional DTI data (fractional anisotropy [FA] and apparent diffusion coefficient [ADC]) with the clinical symptoms. MATERIALS AND METHODS Nine patients with spinal cord AVMs were investigated at 1.5T using a sagittal spin-echo single-shot echo-planar generalized autocalibrating partially parallel acquisition diffusion-weighted imaging sequence. ADC and FA maps were computed in different regions of interest (both above and below the nidus), and tractography was used to visualize the course of the tracts. The data were correlated with the clinical symptoms and compared with 12 healthy control subjects. RESULTS At the level of the nidus, tracts were normal, shifted, separated, or interrupted but not intermingled with the nidus. Interruption of the tracts was coherent with the clinical symptoms. In patients with severe neurologic deficits, FA values caudal to the nidus showed a reduced anisotropy consistent with loss of white matter tracts. CONCLUSIONS We demonstrate that AVMs may interrupt, displace, or separate the fiber tracts and that clinical symptoms may be reflected by the quantitative FA results and the morphologic loss of fibers distant to the lesion. DTI with fiber tracking offers a novel approach to image spinal cord AVMs and may open a window to understand the complex pathophysiology of these lesions.
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Affiliation(s)
- A Ozanne
- Service de Neuroradiologie Diagnostique et Thérapeutique, Hôpital de Bicêtre, Le Kremlin-Bicêtre, Paris, France, and Department of Computer Science, University of North Carolina, Chapel Hill, USA.
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31
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Lasjaunias P, Ozanne A, Toulgoat F, Ducreux D. Rhombencephalic Vascular Malformations. Neuroradiol J 2007; 20:411-8. [DOI: 10.1177/197140090702000404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2007] [Accepted: 07/23/2007] [Indexed: 11/16/2022] Open
Affiliation(s)
- P. Lasjaunias
- Neuroradiology, Neuroscience and Head and Neck Pole, National Center for Malformative Neurovascular Diseases in Children, Bicêtre Hospital; Paris, France
| | - A. Ozanne
- Neuroradiology, Neuroscience and Head and Neck Pole, National Center for Malformative Neurovascular Diseases in Children, Bicêtre Hospital; Paris, France
| | - F. Toulgoat
- Neuroradiology, Neuroscience and Head and Neck Pole, National Center for Malformative Neurovascular Diseases in Children, Bicêtre Hospital; Paris, France
| | - D. Ducreux
- Neuroradiology, Neuroscience and Head and Neck Pole, National Center for Malformative Neurovascular Diseases in Children, Bicêtre Hospital; Paris, France
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32
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Oppenheim C, Ducreux D, Rodrigo S, Hodel J, Tourdias T, Charbonneau F, Pierrefitte S, Meder J. [Diffusion tensor imaging and tractography of the brain and spinal cord]. ACTA ACUST UNITED AC 2007; 88:510-20. [PMID: 17457261 DOI: 10.1016/s0221-0363(07)89850-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Diffusion tensor imaging is a magnetic resonance imaging technique that provides details on tissue microstructure and organization well beyond the usual image resolution. With diffusion tensor imaging, diffusion anisotropy can be quantified and subtle white matter changes not normally seen on conventional MRI can be detected. The aim of this article is to review the principles of diffusion tensor imaging and fiber tracking and their applications to the study of the brain, including Alzheimer disease, neuropsychiatric disorders, strokes, multiple sclerosis, brain tumors, and intractable seizures. Emerging applications to spinal cord disorders are also presented.
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Affiliation(s)
- C Oppenheim
- Université Paris Descartes, Département d'Imagerie Morphologique et Fonctionnelle, CH Sainte-Anne, 1, rue Cabanis, 75674 Paris Cedex 14.
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Denier C, Orgibet A, Roffi F, Jouvent E, Buhl C, Niel F, Boespflug-Tanguy O, Said G, Ducreux D. Adult-onset vanishing white matter leukoencephalopathy presenting as psychosis. Neurology 2007; 68:1538-9. [PMID: 17470759 DOI: 10.1212/01.wnl.0000260701.76868.44] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- C Denier
- Department of Neurology, Hôpital de Bicêtre, Assistance-Publique-Hôpitaux de Paris, Universite Paris XI, Le Kremlin-Bicêtre, France.
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Wu RH, Ducreux D, Crawley A, Lin R, Kong KM, Guo G, Luo XT, Lang ZJ, terBrugge K, Mikulis DJ. Improving spatial signal homogeneity in MR 2D chemical shift imaging using outer volume saturation bands. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:1084-7. [PMID: 17271871 DOI: 10.1109/iembs.2004.1403352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Many endeavors of improving chemical shift imaging (CSI) techniques have been made during last two decades. Good examples of two-dimensional CSI and three-dimensional CSI can be found in the literature. However, clinical CSI using available sequences is still not satisfactory. The purpose of this study was to assess the effect of outer volume saturation bands on signal homogeneity in MR 2D chemical shift imaging. The 2D CSI scans were acquired using a point resolved spectroscopy (PRESS) CSI sequence on a phantom filled with brain metabolites. A single PRESS volume of interest was prescribed graphically. The acquisition matrix was 18x18 phase encodings over a 24-cm FOV. Identical acquisitions were obtained with and without outer-volume saturation bands. After initial acquisition was obtained, four more acquisitions were repeated for both studies with and without saturation bands. Identical five groups of voxels were compared for both studies. Standard deviations of metabolite ratios were calculated in each group for both studies. Spectra obtained without outer-volume saturation bands showed signal to noise gradient with higher concentration of signal within voxels at the center of the volume of interest. Outer volume saturation bands reduced this gradient. In general, standard deviations of metabolite ratios with saturation bands were smaller than those without saturation bands. Improved spatial homogeneity of spectra in voxels of CSI with saturation bands was obtained. Outer-volume saturation bands improve spatial signal homogeneity of chemical shift imaging.
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Affiliation(s)
- R H Wu
- Dept. of Med. Imaging, Shantou Univ. Med. Coll., China
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35
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Dhermain F, Bouhris J, Lasjaunias P, Ducreux D. Application de la méthode d'estimation de la perméabilité en IRM de perfusion chez des patients présentant des tumeurs gliales de grade II/III. J Neuroradiol 2007. [DOI: 10.1016/j.neurad.2007.01.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ducreux D, Toulgoat F, Cazejust J, Rutgers D, Tadie M, Lasjaunias P. Résultats qualitatifs de l'étude pilote en IRM de tenseur de diffusion et tracking de fibres réalisée chez des patients traumatisés médullaires. J Neuroradiol 2007. [DOI: 10.1016/j.neurad.2007.01.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ducreux D, Toulgoat F, Rutgers D, Tadia M, Lasjaunias P. Résultats qualitatifs de l'étude pilote conduite en tenseur de diffusion et tracking de fibres chez des patients traumatisés crâniens légers. J Neuroradiol 2007. [DOI: 10.1016/j.neurad.2007.01.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ducreux D. About ‘Quantitative Measurement of Blood-Brain Barrier Permeability using Perfusion-CT in Extra-axial Brain Tumors’. J Neuroradiol 2007; 34:72; author reply 72-3. [PMID: 17320175 DOI: 10.1016/j.neurad.2007.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Ducreux D, Lasjaunias P. Mesures et quantification de la perfusion et de la perméabilité tumorale: une nouvelle approche méthodologique. J Neuroradiol 2007. [DOI: 10.1016/j.neurad.2007.01.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
Functional MRI is a technique of imaging which is developing fast as it allows non-aggressive evaluation of brain functions. Diffusion, perfusion and activation are each used to study brain responsiveness to a given task. As a pretherapeutic routine investigation, in brain tumours, it can be helpful as an additional tool to morphological MRI in evaluating the prognosis of patients.
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Affiliation(s)
- D Ducreux
- Service de Neuroradiologie, CHU de Bicêtre, Université Paris-XI, 78, Rue du Général-Leclerc, 94270 Le Kremlin-Bicêtre, France.
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Renoux J, Facon D, Fillard P, Huynh I, Lasjaunias P, Ducreux D. MR diffusion tensor imaging and fiber tracking in inflammatory diseases of the spinal cord. AJNR Am J Neuroradiol 2006; 27:1947-51. [PMID: 17032873 PMCID: PMC7977871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
PURPOSE Our aim was to study the fractional anisotropy (FA) variations and the fiber tracking (FT) patterns observed in patients with myelitis. MATERIAL AND METHODS Fifteen patients with symptomatic myelitis and 11 healthy subjects were prospectively selected. We performed T2-weighted and diffusion tensor imaging on a 1.5T MR scanner. FA and apparent diffusion coefficient maps were computed in both healthy subjects and patients. In each patient, we performed FT to study pathologic aspects on this imaging method. FA data were analyzed by using z-scores. RESULTS For the healthy subjects, averaged FA values ranged from 0.745 to 0.751. All abnormal areas seen on T2-weighted imaging had a significantly decreased FA value. In 9 patients (60%), FA maps showed decreased FA areas, whereas T2-weighted imaging findings were normal. These areas matched the neurologic deficit in 33%. Eighty percent of patients had multiple decreased FA areas. Five patients (33%) had increased FA values in normal T2-weighted areas. CONCLUSION We observed specific FA and FT pattern variations in patients with myelitis.
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Affiliation(s)
- J Renoux
- Department of Neuroradiology, CHU de Bicêtre, Le Kremlin Bicêtre, France
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Liberatore M, Denier C, Fillard P, Petit-Lacour MC, Benoudiba F, Lasjaunias P, Ducreux D. Suivi évolutif d’une myelinolyse centro-pontique en IRM de tenseur de diffusion et de tracking de fibres. J Neuroradiol 2006; 33:189-93. [PMID: 16840962 DOI: 10.1016/s0150-9861(06)77258-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To illustrate the value of diffusion tensor imaging and tractography in the diagnosis and follow-up of central pontine myelinolysis. CASE REPORT We report a case of central pontine myelinolysis in a 29 year old woman, also anorexic, studied using MR Diffusion Tensor Imaging (DTI) and Fibre Tracking (FT) focused on the pons, and compared with the studies of 5 normal volunteers. Tractography showed a swollen aspect of the right corticospinal fiber tract correlating with mild left lower extremity deficit at clinical evaluation. The pontine fibers were posteriorly displaced but intact. The sensory tracts were also intact. Apparent Diffusion Coefficient values were increased and Fractional Anisotropy was decreased in the lesions. Follow up imaging showed persistent abnormal ADC and FA values in the pons although the left cortico-spinal tract returned to normal, consistent with the clinical outcome. CONCLUSION Diffusion Tensor Imaging MR and Fiber tractography are a new method to analyse white matter tracts. It can be used to prospectively evaluate the location of white matter tract lesions at the acute phase of central pontine myelinolysis and follow up.
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Affiliation(s)
- M Liberatore
- Service de Neuroradiologie, CHU de Bicêtre, Université Paris XI, 78 rue du Général Leclerc, 94270 Le Kremlin Bicêtre
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Ducreux D, Buvat I, Meder JF, Mikulis D, Crawley A, Fredy D, TerBrugge K, Lasjaunias P, Bittoun J. Perfusion-weighted MR imaging studies in brain hypervascular diseases: comparison of arterial input function extractions for perfusion measurement. AJNR Am J Neuroradiol 2006; 27:1059-69. [PMID: 16687543 PMCID: PMC7975726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
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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Affiliation(s)
- D Ducreux
- Department of Neuroradiology, C.H.U. de Bicêtre, Paris XI University, Le Kremlin-Bicêtre, France
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Roffi F, Denier C, Adams D, Corruble E, Ducreux D. P-13 - Imagerie multimodale du syndrome de « vanishing white matter » : à propos d’un cas. J Neuroradiol 2006. [DOI: 10.1016/s0150-9861(06)77196-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ducreux D, Lepeintre JF, Fillard P, Loureiro C, Tadié M, Lasjaunias P. MR diffusion tensor imaging and fiber tracking in 5 spinal cord astrocytomas. AJNR Am J Neuroradiol 2006; 27:214-6. [PMID: 16418387 PMCID: PMC7976075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Spinal cord astrocytomas are rare neoplasms that can result in alteration of the spinal cord structural integrity, which can be assessed by using diffusion tensor imaging methods. Our objective was to visualize the deformation of the posterior spinal cord lemniscal and corticospinal tracts in 5 patients with low-grade astrocytomas compared with 10 healthy volunteers by using 3D fiber-tracking reconstructions.
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Affiliation(s)
- D Ducreux
- Department of Neuroradiology, CHU de Bicêtre, Paris XI University, Le Kremlin-Bicêtre, France
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Ducreux D, Huynh I, Fillard P, Renoux J, Petit-Lacour MC, Marsot-Dupuch K, Lasjaunias P. Brain MR diffusion tensor imaging and fibre tracking to differentiate between two diffuse axonal injuries. Neuroradiology 2005; 47:604-8. [PMID: 15973535 DOI: 10.1007/s00234-005-1389-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2004] [Accepted: 03/25/2005] [Indexed: 11/28/2022]
Abstract
We report here two cases of diffuse axonal injury (DAI) studied by MR diffusion tensor imaging (DTI) and fibre tracking (FT) focused on the corpus callosum. In one case, DTI and FT pattern matched the diagnosis of broken white matter tracts. In the other case there was a discrepancy between DTI and FT data that showed unaltered white matter tracts with the presence of intra-cellular oedema. These data suggested that DTI and FT are able to differentiate between traumatic cytotoxic oedema and broken fibres in the case of DAI.
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Affiliation(s)
- D Ducreux
- Department of Neuroradiology, CHU de Bicêtre, Paris XI University, 94270 Le Kremlin Bicêtre, France.
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Nasser, Marsot-Dupuch K, Fillard P, Doyon D, Lasjaunias P, Ducreux D. P-17 Étude de faisabilite du tracking de fibres des paquets acoustico-faciaux et applications en pathologie tumorale. J Neuroradiol 2005. [DOI: 10.1016/s0150-9861(05)83097-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ducreux D, Buvat I, Meder JF, Bittoun J, Lasjaunias P. CO-02 Comparaison de méthodes de calcul de la fonction d’entrée artérielle en IRM cérébrale de perfusion chez des patients porteurs de malformations artério-veineuses cérébrales. J Neuroradiol 2005. [DOI: 10.1016/s0150-9861(05)83028-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Moreno, Tadie M, Lasjaunias P, Ducreux D. P-13 IRM fonctionelle d’activation en imagerie mentale motrice. J Neuroradiol 2005. [DOI: 10.1016/s0150-9861(05)83093-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ducreux D, Desal H, Bittoun J, Mikulis D, Terbrugge K, Lasjaunias P. [Diffusion, perfusion and activation functional MRI studies of brain arteriovenous malformations]. J Neuroradiol 2004; 31:25-34. [PMID: 15026729 DOI: 10.1016/s0150-9861(04)96876-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The management of Brain Arteriovenous Malformations continues to be challenged by a lack of understanding and control of pathophysiological processes implied in the clinical symptoms. New data from functional MRI with diffusion-weighted, perfusion-weighted and neuronal activation highlight abnormal brain areas near or remote to the AVM nidus. Moreover, these techniques are able to show hemodynamic and neuronal adaptative phenomena involved in brain plasticity. They reflect the instantaneous hemodynamic brain conditions that may help to correlate the clinical symptoms with the anatomical and functional substratum and to influence any invasive therapy.
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Affiliation(s)
- D Ducreux
- Service de Neuroradiologie, CHU de Bicêtre, Université Paris XI, Le Kremlin Bicêtre, France.
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