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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: 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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Uk I Zs.135 -Spine-: Show issues

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Article: Duplication of the extracranial internal carotid artery analyzed by MRI.

Scheffler, Max / Cuvinciuc, Victor / Lovblad, Karl-Olof / Vargas, Maria Isabel

The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques

2011 Volume 40, Issue 3, Page(s) 423–425

MeSH term(s)	Aged ; Carotid Artery Diseases/diagnosis ; Carotid Artery, Internal/pathology ; Female ; Gadolinium ; Humans ; Magnetic Resonance Angiography ; Magnetic Resonance Imaging
Chemical Substances	Gadolinium (AU0V1LM3JT)
Language	English
Publishing date	2011-03-28
Publishing country	England
Document type	Case Reports ; Journal Article
ZDB-ID	197622-9
ISSN	0317-1671
ISSN	0317-1671
DOI	10.1017/s0317167100014414
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Zs.A 1203: Show issues

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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: Arterial embolization with Onyx of head and neck paragangliomas.

Michelozzi, Caterina / Januel, Anne Christine / Cuvinciuc, Victor / Tall, Philippe / Bonneville, Fabrice / Fraysse, Bernard / Deguine, Olivier / Serrano, Elie / Cognard, Christophe

Journal of neurointerventional surgery

2016 Volume 8, Issue 6, Page(s) 626–635

Abstract: Object: To report the morbidity and long term results in the treatment of paragangliomas by transarterial embolization with ethylene vinyl alcohol (Onyx), either as preoperative or palliative treatment.: Methods: Between September 2005 and 2012, 18 ... ...

Abstract	Object: To report the morbidity and long term results in the treatment of paragangliomas by transarterial embolization with ethylene vinyl alcohol (Onyx), either as preoperative or palliative treatment. Methods: Between September 2005 and 2012, 18 jugulotympanic, 7 vagal, and 4 carotid body paragangliomas (CBPs) underwent Onyx embolization, accordingly to our head and neck multidisciplinary team's decision. CBPs were embolized preoperatively. Jugulotympanic and vagal paragangliomas underwent surgery when feasible, otherwise palliative embolization was carried out alone, or in combination with radiotherapy or tympanic surgery in the case of skull base or tympanic extension. Treatment results, and clinical and MRI follow-up data were recorded. Results: In all cases, devascularization of at least 60% of the initial tumor blush was obtained; 6 patients underwent two embolizations. Post-embolization, 8 patients presented with cranial nerve palsy, with partial or complete regression at follow-up (mean 31 months, range 3-86 months), except for 2 vagal and 1 hypoglossal palsy. 10 patients were embolized preoperatively; 70% were cured after surgery and 30% showed residual tumor. 19 patients received palliative embolization, of whom 5 underwent radiotherapy and 3 received tympanic surgery post-embolization. Long term follow-up of palliative embolization resulted in tumor volume stability (75%) or extension in intracranial or tympanic compartments. Onyx embolization of CBPs resulted in more difficult surgical dissection in 2 of 4 cases. Conclusions: Onyx embolization is a valuable alternative to surgery in the treatment of jugulotympanic and vagal paragangliomas; tympanic surgery or radiosurgery of the skull base should be considered in selected cases. Preoperative Onyx embolization of CBPs is not recommended.
MeSH term(s)	Adult ; Aged ; Biocompatible Materials/administration & dosage ; Biocompatible Materials/adverse effects ; Dimethyl Sulfoxide/administration & dosage ; Dimethyl Sulfoxide/adverse effects ; Embolization, Therapeutic/adverse effects ; Embolization, Therapeutic/methods ; Female ; Head and Neck Neoplasms/surgery ; Head and Neck Neoplasms/therapy ; Humans ; Male ; Middle Aged ; Paraganglioma, Extra-Adrenal/surgery ; Paraganglioma, Extra-Adrenal/therapy ; Polyvinyls/administration & dosage ; Polyvinyls/adverse effects ; Preoperative Care ; Retrospective Studies ; Treatment Outcome
Chemical Substances	Biocompatible Materials ; Onyx copolymer ; Polyvinyls ; Dimethyl Sulfoxide (YOW8V9698H)
Keywords	covid19
Language	English
Publishing date	2016-06
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-2014-011582
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Zs.A 6845: Show issues

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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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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: Dentate nuclei and Wernicke's encephalopathy.

Zourdani, Hakim / Hamya, Ibtihal / Cuvinciuc, Victor / Lovblad, Karl / Vargas, Maria Isabel

Journal of neuroradiology = Journal de neuroradiologie

2013 Volume 40, Issue 3, Page(s) 225–227

MeSH term(s)	Cerebellar Nuclei/pathology ; Female ; Humans ; Magnetic Resonance Imaging ; Middle Aged ; Thiamine/therapeutic use ; Treatment Outcome ; Wernicke Encephalopathy/drug therapy ; Wernicke Encephalopathy/pathology
Chemical Substances	Thiamine (X66NSO3N35)
Language	English
Publishing date	2013-02-20
Publishing country	France
Document type	Case Reports ; Letter
ZDB-ID	131763-5
ISSN	1773-0406 ; 0150-9861
ISSN (online)	1773-0406
ISSN	0150-9861
DOI	10.1016/j.neurad.2012.07.002
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Article ; Online: 3D fat-saturated T1 SPACE sequence for the diagnosis of cervical artery dissection.

Cuvinciuc, Victor / Viallon, Magalie / Momjian-Mayor, Isabelle / Sztajzel, Roman / Pereira, Vitor Mendes / Lovblad, Karl-Olof / Vargas, Maria Isabel

Neuroradiology

2013 Volume 55, Issue 5, Page(s) 595–602

Abstract: Introduction: This study aims to demonstrate the added value of a 3D fat-saturated (FS) T1 sampling perfection with application-optimised contrast using different flip angle evolutions (SPACE) sequence compared to 2D FS T1 spin echo (SE) for the ... ...

Abstract	Introduction: This study aims to demonstrate the added value of a 3D fat-saturated (FS) T1 sampling perfection with application-optimised contrast using different flip angle evolutions (SPACE) sequence compared to 2D FS T1 spin echo (SE) for the diagnosis of cervical artery dissection. Methods: Thirty-one patients were prospectively evaluated on a 1.5-T MR system for a clinical suspicion of acute or subacute cervical artery dissection with 3D T1 SPACE sequence. In 23 cases, the axial 2D FS T1 SE sequence was also used; only these cases were subsequently analysed. Two neuroradiologists independently and blindly assessed the 2D and 3D T1 sequences. The presence of recent dissection (defined as a T1 hyperintensity in the vessel wall) and the quality of fat suppression were assessed. The final diagnosis was established in consensus, after reviewing all the imaging and clinical data. Results: Overall sensitivity and specificity were 0.929 and 1 for axial T1 SE, and 0.965 and 0.945 for T1 SPACE (P > 0.05), respectively. The two readers had excellent agreement for both sequences (k = 1 and 0.8175 for T1 SE and T1 SPACE, respectively; P > 0.05). The quality of the fat saturation was similar. Very good fat saturation was obtained in the upper neck. Multiplanar reconstructions were very useful in tortuous regions, such as the atlas loop of the vertebral artery or the carotid petrous entry. 3D T1 SPACE sequence has a shorter acquisition time (3 min 25 s versus 5 min 32 s for one T1 SE sequence) and a larger coverage area. Conclusion: 3D T1 SPACE sequence offers similar information with its 2D counterpart, in a shorter acquisition time and larger coverage area.
MeSH term(s)	Adipose Tissue/pathology ; Algorithms ; Carotid Artery, Internal, Dissection/pathology ; Female ; Humans ; Image Enhancement/methods ; Image Interpretation, Computer-Assisted/methods ; Imaging, Three-Dimensional/methods ; Magnetic Resonance Angiography/methods ; Male ; Middle Aged ; Reproducibility of Results ; Sensitivity and Specificity ; Subtraction Technique ; Vertebral Artery Dissection/pathology
Language	English
Publishing date	2013-01-25
Publishing country	Germany
Document type	Journal Article
ZDB-ID	123305-1
ISSN	1432-1920 ; 0028-3940
ISSN (online)	1432-1920
ISSN	0028-3940
DOI	10.1007/s00234-013-1141-1
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