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Article ; Online: Atlantoaxial posterior screw fixation using intra-operative spinal navigation with three-dimensional isocentric C-arm fluoroscopy.

Jannelli, Gianpaolo / Moiraghi, Alessandro / Paun, Luca / Cuvinciuc, Victor / Bartoli, Andrea / Tessitore, Enrico

2022 Volume 46, Issue 2, Page(s) 321–329

Abstract: Purpose: Intra-operative image acquisition coupled with navigation aims to increase screw placement accuracy, and it is particularly helpful in complex spinal procedures. The aim of this study is to analyze the accuracy and reliability of posterior ... ...

Abstract	Purpose: Intra-operative image acquisition coupled with navigation aims to increase screw placement accuracy, and it is particularly helpful in complex spinal procedures. The aim of this study is to analyze the accuracy and reliability of posterior atlanto-axial fixation using spinal navigation combined with intra-operative 3D isocentric C-arm. Methods: We retrospectively reviewed all patients presenting with C1-C2 instability and treated by posterior atlanto-axial fixation in our center between December 2016 and September 2018. Screw positioning was guided by intra-operative navigation, registered with surface matching procedure on a previously obtained CT scan and controlled by intra-operative 3D isocentric C-arm. Age, sex, pre- and post-operative neurological status, duration of surgery, presence/absence of vertebral artery injury, and screw placement were retrospectively collected from patients' records. All patients underwent clinical and radiological follow-up at three months after surgery. Radiological assessment of screw positioning was performed by an independent radiologist using the Gertzbein and Robbins grading. Results: N = 11 (7F, 4 M) consecutive patients were included, with a mean age of 72 years (range from 51 to 85). N = 44 navigated screws were inserted and controlled with intra-operative 3D fluoroscopy at the end of the procedure. An acceptable screw positioning (Gertzbein-Robbins grade A and B) was obtained in all cases (100%). No vertebral artery injury was observed. Mean operating time was 123 minutes. At three months, no screw loosening or displacement was observed. Conclusion: In our experience, spinal navigation coupled with intra-operative 3D fluoroscopy proved to be reliable and safe for C1-C2 screw placement.
MeSH term(s)	Aged ; Aged, 80 and over ; Bone Screws ; Fluoroscopy/methods ; Humans ; Imaging, Three-Dimensional ; Middle Aged ; Reproducibility of Results ; Retrospective Studies ; Spinal Fusion/methods ; Surgery, Computer-Assisted/methods
Language	English
Publishing date	2022-01-07
Publishing country	Germany
Document type	Journal Article
ZDB-ID	80384-4
ISSN	1432-5195 ; 0341-2695
ISSN (online)	1432-5195
ISSN	0341-2695
DOI	10.1007/s00264-021-05276-y
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Zs.A 1324: Show issues

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Article ; Online: Patterns of convexal subarachnoid haemorrhage: clinical, radiological and outcome differences between cerebral amyloid angiopathy and other causes.

Calviere, Lionel / Raposo, Nicolas / Cuvinciuc, Victor / Cognard, Christophe / Bonneville, Fabrice / Viguier, Alain

Journal of neurology

2018 Volume 265, Issue 1, Page(s) 204–210

Abstract: Background: Cerebral amyloid angiopathy (CAA) is a common aetiology of convexal subarachnoid haemorrhage (cSAH) but little is known about its specific characteristics in comparison with cSAH from other causes. In this study we compared patients with CAA ...

Abstract	Background: Cerebral amyloid angiopathy (CAA) is a common aetiology of convexal subarachnoid haemorrhage (cSAH) but little is known about its specific characteristics in comparison with cSAH from other causes. In this study we compared patients with CAA vs. non-CAA-related cSAH. Methods: Retrospective review of baseline and follow-up data of consecutive patients admitted with a symptomatic acute cSAH. Results: Sixty-two patients were included (mean age 66.2 ± 14.1 years), of whom 31 with probable CAA. CAA patients presented more frequently with transient symptoms (83.9 vs. 19.3%; p < 0.001) usually without headache (19.0 vs. 58.1%; p = 0.002). In CAA, these were essentially positive sensory disturbance that met the criteria of transient focal neurological episodes (TFNE). CAA was more often associated with cortical superficial siderosis (cSS) (80.6 vs. 0%; p < 0.001) and lobar cerebral microbleeds (83.4 vs. 9%; p < 0.001). During a mean of 22 months of follow-up, recurrent symptomatic cSAH occurred in 4/27 (12.9%) CAA patients and in 0/27 non-CAA patients. Among 40 patients with MRI follow-up, cSAH recurrences were observed in 44% of CAA patients vs. 13.3% of other cases (p = 0.08) and extension of cSS was detected only in CAA (60%) (p < 0.001). Acute cSAH evolved to cSS in 96 and 73.3% of CAA and non-CAA patients, respectively (p = 0.06). Conclusions: CAA differs from other cSAH in having TFNE as a frequent clinical presentation, a high prevalence of cSS and an increased risk of recurrent subarachnoid bleeding. However, evolution from acute cSAH to focal cSS may not be specific to CAA.
MeSH term(s)	Aged ; Aged, 80 and over ; Cerebral Amyloid Angiopathy/complications ; Cerebral Amyloid Angiopathy/diagnostic imaging ; Female ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Retrospective Studies ; Severity of Illness Index ; Subarachnoid Hemorrhage/diagnostic imaging ; Subarachnoid Hemorrhage/etiology
Language	English
Publishing date	2018-01
Publishing country	Germany
Document type	Journal Article
ZDB-ID	187050-6
ISSN	1432-1459 ; 0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
ISSN (online)	1432-1459
ISSN	0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
DOI	10.1007/s00415-017-8693-7
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Article ; Online: Dynamic Contrast-Enhanced MR Perfusion of Intradural Spinal Lesions.

Cuvinciuc, V / Viallon, M / Barnaure, I / Vargas, M I / Lovblad, K-O / Haller, S

AJNR. American journal of neuroradiology

2016 Volume 38, Issue 1, Page(s) 192–194

Abstract: Fifteen patients with intradural spinal lesions were examined with an optimized dynamic contrast-enhanced MR perfusion sequence at 1.5T and 3T. SNR and mean contrast-to-noise ratio were better on 3T compared with 1.5T (P ≤ .05). The goodness of fit of ... ...

Abstract	Fifteen patients with intradural spinal lesions were examined with an optimized dynamic contrast-enhanced MR perfusion sequence at 1.5T and 3T. SNR and mean contrast-to-noise ratio were better on 3T compared with 1.5T (P ≤ .05). The goodness of fit of the Tofts and Tofts extended pharmacokinetic models was similar between 1.5T and 3T. Thus, dynamic contrast-enhanced MR perfusion of intradural spinal canal lesions is technically feasible at 1.5T and 3T, with better image quality at 3T.
MeSH term(s)	Contrast Media ; Female ; Humans ; Magnetic Resonance Imaging/methods ; Male ; Middle Aged ; Perfusion Imaging/methods ; Spinal Cord Diseases/diagnostic imaging
Chemical Substances	Contrast Media
Language	English
Publishing date	2016-11-17
Publishing country	United States
Document type	Journal Article
ZDB-ID	603808-6
ISSN	1936-959X ; 0195-6108
ISSN (online)	1936-959X
ISSN	0195-6108
DOI	10.3174/ajnr.A4995
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Article: L'angiopathie amyloïde: une cause oubliée d'hémorragie sous-arachnoïdienne.

Cuvinciuc, V / Viguier, A / Bonneville, F

Journal of neuroradiology = Journal de neuroradiologie

2009 Volume 36, Issue 4, Page(s) 245–6; author reply 246–7

Title translation	Cerebral amyloid angiopathy: a forgotten cause of sub-arachnoid hemorrhage.
MeSH term(s)	Aneurysm, Ruptured/complications ; Aneurysm, Ruptured/diagnosis ; Angiography, Digital Subtraction ; Cerebral Amyloid Angiopathy/complications ; Cerebral Angiography ; Diagnosis, Differential ; Humans ; Image Processing, Computer-Assisted ; Intracranial Aneurysm/complications ; Intracranial Aneurysm/diagnosis ; Magnetic Resonance Angiography ; Subarachnoid Hemorrhage/diagnosis ; Subarachnoid Hemorrhage/etiology ; Tomography, X-Ray Computed ; Vasculitis, Central Nervous System/diagnosis ; Venous Thrombosis/diagnosis
Language	French
Publishing date	2009-09-18
Publishing country	France
Document type	Comment ; Letter
ZDB-ID	131763-5
ISSN	1773-0406 ; 0150-9861
ISSN (online)	1773-0406
ISSN	0150-9861
DOI	10.1016/j.neurad.2009.08.003
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Zs.A 1062: Show issues

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Article ; Online: Imaging of the cavernous sinus lesions.

Korchi, A M / Cuvinciuc, V / Caetano, J / Becker, M / Lovblad, K O / Vargas, M I

Diagnostic and interventional imaging

2014 Volume 95, Issue 9, Page(s) 849–859

Abstract: This educational paper reviews the normal anatomy of the cavernous sinus (CS) and the imaging findings of common and uncommon lesions of this region. CS lesions may arise from different components of the CS or from adjacent structures and spaces. They ... ...

Abstract	This educational paper reviews the normal anatomy of the cavernous sinus (CS) and the imaging findings of common and uncommon lesions of this region. CS lesions may arise from different components of the CS or from adjacent structures and spaces. They can be classified as tumoral, inflammatory/infectious, vascular and congenital. Tumoral lesions include benign (meningiomas, pituitary adenomas, schwannomas) and malignant neoplasms (chondrosarcomas, chordomas, nasopharyngeal carcinomas, leukemia, metastases). Inflammatory/infectious conditions comprise: Tolosa Hunt, abscess, Lemierre syndrome and thrombophlebitis. Vascular lesions include: hemangiomas, carotido-cavernous fistula, aneurysms, arteriovenous malformations. Congenital conditions include the epidermoid cyst, dermoid cyst and fatty deposits. Although imaging features of non-vascular CS diseases are most often non-specific, careful analysis of the adjacent structures suggests the correct diagnosis. In vascular pathology, characteristic MR imaging findings are observed.
MeSH term(s)	Brain Diseases/diagnosis ; Brain Neoplasms/diagnosis ; Cavernous Sinus/pathology ; Diagnosis, Differential ; Humans ; Image Enhancement/methods ; Imaging, Three-Dimensional/methods ; Magnetic Resonance Imaging/methods ; Reference Values ; Tomography, X-Ray Computed/methods
Language	English
Publishing date	2014-09
Publishing country	France
Document type	Journal Article
ZDB-ID	2648283-6
ISSN	2211-5684 ; 2211-5684
ISSN (online)	2211-5684
ISSN	2211-5684
DOI	10.1016/j.diii.2013.04.013
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Article ; Online: Proton MR spectroscopy of progressive multifocal leukoencephalopathy-immune reconstitution inflammatory syndrome.

Cuvinciuc, V / Martin-Blondel, G / Marchou, B / Bonneville, F

AJNR. American journal of neuroradiology

2010 Volume 31, Issue 8, Page(s) E69–70; author reply E71

MeSH term(s)	Encephalitis/immunology ; Encephalitis/pathology ; Humans ; Leukoencephalopathy, Progressive Multifocal/immunology ; Leukoencephalopathy, Progressive Multifocal/pathology ; Magnetic Resonance Spectroscopy/methods ; Male ; Middle Aged ; Protons
Chemical Substances	Protons
Language	English
Publishing date	2010-06-10
Publishing country	United States
Document type	Case Reports ; Comment ; Letter
ZDB-ID	603808-6
ISSN	1936-959X ; 0195-6108
ISSN (online)	1936-959X
ISSN	0195-6108
DOI	10.3174/ajnr.A2160
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Zs.A 1580: Show issues

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Article ; Online: Safety and accuracy of robot-assisted versus fluoroscopy-guided pedicle screw insertion for degenerative diseases of the lumbar spine: a matched cohort comparison.

Schatlo, Bawarjan / Molliqaj, Granit / Cuvinciuc, Victor / Kotowski, Marc / Schaller, Karl / Tessitore, Enrico

Journal of neurosurgery. Spine

2014 Volume 20, Issue 6, Page(s) 636–643

Abstract: Object: Recent years have been marked by efforts to improve the quality and safety of pedicle screw placement in spinal instrumentation. The aim of the present study is to compare the accuracy of the SpineAssist robot system with conventional ... ...

Abstract	Object: Recent years have been marked by efforts to improve the quality and safety of pedicle screw placement in spinal instrumentation. The aim of the present study is to compare the accuracy of the SpineAssist robot system with conventional fluoroscopy-guided pedicle screw placement. Methods: Ninety-five patients suffering from degenerative disease and requiring elective lumbar instrumentation were included in the study. The robot cohort (Group I; 55 patients, 244 screws) consisted of an initial open robot-assisted subgroup (Subgroup IA; 17 patients, 83 screws) and a percutaneous cohort (Subgroup IB, 38 patients, 161 screws). In these groups, pedicle screws were placed under robotic guidance and lateral fluoroscopic control. In the fluoroscopy-guided cohort (Group II; 40 patients, 163 screws) screws were inserted using anatomical landmarks and lateral fluoroscopic guidance. The primary outcome measure was accuracy of screw placement on the Gertzbein-Robbins scale (Grade A to E and R [revised]). Secondary parameters were duration of surgery, blood loss, cumulative morphine, and length of stay. Results: In the robot group (Group I), a perfect trajectory (A) was observed in 204 screws (83.6%). The remaining screws were graded B (n = 19 [7.8%]), C (n = 9 [3.7%]), D (n = 4 [1.6%]), E (n = 2 [0.8%]), and R (n = 6 [2.5%]). In the fluoroscopy-guided group (Group II), a completely intrapedicular course graded A was found in 79.8% (n = 130). The remaining screws were graded B (n = 12 [7.4%]), C (n = 10 [6.1%]), D (n = 6 [3.7%]), and E (n = 5 [3.1%]). The comparison of "clinically acceptable" (that is, A and B screws) was neither different between groups (I vs II [p = 0.19]) nor subgroups (Subgroup IA vs IB [p = 0.81]; Subgroup IA vs Group II [p = 0.53]; Subgroup IB vs Group II [p = 0.20]). Blood loss was lower in the robot-assisted group than in the fluoroscopy-guided group, while duration of surgery, length of stay, and cumulative morphine dose were not statistically different. Conclusions: Robot-guided pedicle screw placement is a safe and useful tool for assisting spine surgeons in degenerative spine cases. Nonetheless, technical difficulties remain and fluoroscopy backup is advocated.
MeSH term(s)	Adult ; Aged ; Aged, 80 and over ; Bone Screws ; Female ; Fluoroscopy/instrumentation ; Humans ; Lumbar Vertebrae/pathology ; Lumbar Vertebrae/surgery ; Male ; Middle Aged ; Patient Safety ; Radiography, Interventional ; Retrospective Studies ; Robotics/instrumentation ; Spinal Diseases/pathology ; Spinal Diseases/surgery ; Spinal Fusion/instrumentation ; Surgery, Computer-Assisted/instrumentation ; Tomography, X-Ray Computed ; Treatment Outcome
Language	English
Publishing date	2014-06
Publishing country	United States
Document type	Comparative Study ; Journal Article
ZDB-ID	2158643-3
ISSN	1547-5646 ; 1547-5654
ISSN (online)	1547-5646
ISSN	1547-5654
DOI	10.3171/2014.3.SPINE13714
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Article: CO

Pellaton, Alain / Bijlenga, Philippe / Bouchez, Laurie / Cuvinciuc, Victor / Barnaure, Isabelle / Garibotto, Valentina / Lövblad, Karl-Olof / Haller, Sven

World journal of radiology

2016 Volume 8, Issue 11, Page(s) 887–894

Abstract: Aim: To compare the assessment of cerebrovascular reserve (CVR) using CO: Methods: Ten consecutive patients (8 women, mean age of 41 ± 26 years) with moyamoya syndrome underwent 14 pre-surgical evaluations for external-internal carotid artery bypass ... ...

Abstract	Aim: To compare the assessment of cerebrovascular reserve (CVR) using CO Methods: Ten consecutive patients (8 women, mean age of 41 ± 26 years) with moyamoya syndrome underwent 14 pre-surgical evaluations for external-internal carotid artery bypass surgery. CVR was assessed using CO Results: The inter-rater agreement was 0.81 for SPECT (excellent), 0.43 for PET (fair) and 0.7 for CO Conclusion: CO
Language	English
Publishing date	2016-12-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	2573705-3
ISSN	1949-8470
ISSN	1949-8470
DOI	10.4329/wjr.v8.i11.887
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Article ; Online: Acute Convexity Subarachnoid Hemorrhage Related to Cerebral Amyloid Angiopathy: Clinicoradiological Features and Outcome.

Calviere, Lionel / Cuvinciuc, Victor / Raposo, Nicolas / Faury, Alexandre / Cognard, Christophe / Larrue, Vincent / Viguier, Alain / Bonneville, Fabrice

Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association

2016 Volume 25, Issue 5, Page(s) 1009–1016

Abstract: Background: The specificities of acute convexity subarachnoid hemorrhage (cSAH) related to cerebral amyloid angiopathy (CAA) and its evolution are not well known. We aimed to describe the clinicoradiological pattern, the magnetic resonance imaging (MRI) ...

Abstract	Background: The specificities of acute convexity subarachnoid hemorrhage (cSAH) related to cerebral amyloid angiopathy (CAA) and its evolution are not well known. We aimed to describe the clinicoradiological pattern, the magnetic resonance imaging (MRI) evolution, and the risk of recurrent bleeding in such patients. Methods: Among consecutive patients with an acute nontraumatic cSAH, subjects with available MRI who meet the modified Boston criteria for probable CAA were included. Review of medical records, MRI findings, and follow-up data was performed. Results: Twenty-three patients (14 women; mean age ± standard deviation: 75.9 ± 7.3 years) were included. cSAH was revealed by transient focal neurological episodes (TFNEs) in 18 of 23 (78.3%) patients. In all patients, acute cSAH appeared as a sulcal fluid-attenuated inversion recovery hyperintensity and GRE T2 hypointensity. Cortical superficial siderosis and cortical microbleeds, respectively, were observed in 21 (91.3%) and 20 (86.9%) patients. Twenty patients (87%) had available follow-up data with a mean duration of 29.8 ± 20.2 months. Recurrent TFNEs occurred in 40% of patients. Acute cSAH evolved into cortical superficial siderosis in all patients. New subarachnoid bleedings defined by recurrent acute cSAH (n = 8) or extension of siderosis (n = 14) were detected in 83.3% of the patients. Lobar intracerebral hemorrhage (ICH) occurred in 7 patients (35%). Conclusion: CAA-related cSAH has a specific pattern defined by a high prevalence of TFNEs and cortical superficial siderosis, with a high risk of recurrent bleeding, either cSAH or lobar ICH. The systematic evolution from cSAH to focal cortical superficial siderosis reveals data on siderosis physiopathology.
MeSH term(s)	Aged ; Aged, 80 and over ; Cerebral Amyloid Angiopathy/complications ; Cerebral Amyloid Angiopathy/diagnostic imaging ; Female ; Hemosiderosis/diagnostic imaging ; Hemosiderosis/etiology ; Humans ; Ischemic Attack, Transient/diagnostic imaging ; Ischemic Attack, Transient/etiology ; Magnetic Resonance Imaging ; Male ; Medical Records ; Middle Aged ; Predictive Value of Tests ; Prognosis ; Recurrence ; Retrospective Studies ; Risk Factors ; Subarachnoid Hemorrhage/diagnostic imaging ; Subarachnoid Hemorrhage/etiology ; Time Factors
Language	English
Publishing date	2016-05
Publishing country	United States
Document type	Journal Article
ZDB-ID	1131675-5
ISSN	1532-8511 ; 1052-3057
ISSN (online)	1532-8511
ISSN	1052-3057
DOI	10.1016/j.jstrokecerebrovasdis.2015.11.010
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Article ; Online: Diagnosis of acute ischemia using dual energy CT after mechanical thrombectomy.

Gariani, Joanna / Cuvinciuc, Victor / Courvoisier, Delphine / Krauss, Bernhard / Mendes Pereira, Vitor / Sztajzel, Roman / Lovblad, Karl-Olof / Vargas, Maria Isabel

Journal of neurointerventional surgery

2016 Volume 8, Issue 10, Page(s) 996–1000

Abstract: Background and purpose: To assess the performance of dual energy unenhanced CT in the detection of acute ischemia after mechanical thrombectomy.: Methods: Retrospective study, approved by the local institutional review board, including all patients ... ...

Abstract	Background and purpose: To assess the performance of dual energy unenhanced CT in the detection of acute ischemia after mechanical thrombectomy. Methods: Retrospective study, approved by the local institutional review board, including all patients that underwent intra-arterial thrombectomy in our institution over a period of 2 years. The presence of acute ischemia and hemorrhage was evaluated by three readers. Sensitivity and specificity of the non-contrast CT weighted sum image (NCCT) and the virtual non-contrast reconstructed image (VNC) were estimated and compared using generalized estimating equations to account for the non-independence of regions in each patient. Results: 58 patients (27 women and 31 men; mean age 70.4 years) were included in the study, yielding 580 regions of interest. Sensitivity and specificity in detecting acute ischemia were higher for all readers when using VNC, with a significant increase in sensitivity for two readers (p<0.001 and 0.01) and a significant increase in specificity in one reader (p<0.001). Specificity in detecting hemorrhage was excellent for all readers. Conclusions: Dual energy unenhanced CT VNC images were superior in the identification of acute ischemia in comparison with NCCT.
MeSH term(s)	Acute Disease ; Aged ; Brain Ischemia/diagnostic imaging ; Brain Ischemia/therapy ; Cerebral Hemorrhage/diagnostic imaging ; Female ; Humans ; Image Processing, Computer-Assisted ; Magnetic Resonance Angiography ; Male ; Middle Cerebral Artery/diagnostic imaging ; Retrospective Studies ; Thrombectomy ; Tomography, X-Ray Computed
Language	English
Publishing date	2016-10
Publishing country	England
Document type	Journal Article
ZDB-ID	2514982-9
ISSN	1759-8486 ; 1759-8478
ISSN (online)	1759-8486
ISSN	1759-8478
DOI	10.1136/neurintsurg-2015-011988
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