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Li T, Shi S, Chen Q, Jiang C, Feng W, Tian Q, Long S, Wei Z, Yang J, Wang Y, Ren J, Han X, Ma J. Use of the Neuroform Atlas Stent or LVIS Jr Stent for Treatment of Unruptured Intracranial Aneurysms in Parent Arteries of <2 mm in Diameter: A Multicenter Experience. AJNR Am J Neuroradiol 2024; 45:899-905. [PMID: 38871372 DOI: 10.3174/ajnr.a8238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/11/2024] [Indexed: 06/15/2024]
Abstract
BACKGROUND AND PURPOSE The Neuroform Atlas stent and the LVIS Jr stent are intracranial microstent systems for the treatment of wide-neck intracranial aneurysms. Hence, this study aimed to compare the efficacy and safety of the Neuroform Atlas stent and the LVIS Jr stent for the treatment of unruptured intracranial aneurysms in parent arteries of <2 mm in diameter. MATERIALS AND METHODS From March 2022 to April 2023, the clinical and imaging data of 135 patients with unruptured intracranial aneurysms treated with stent-assisted coiling using the Neuroform Atlas or LVIS Jr stent in parent arteries of <2 mm in diameter were retrospectively analyzed. Stent apposition was evaluated by high-resolution conebeam CT (HR-CBCT). Immediate aneurysm-embolization attenuation and occlusion at 6-month follow-up were evaluated using 2D DSA and the modified Raymond-Roy classification. Adverse events were recorded. Multivariate logistic regression analysis was undertaken to determine the independent factors affecting incomplete stent apposition. RESULTS One hundred thirty-five patients (135 aneurysms) underwent stent-assisted coiling (66 Neuroform Atlas stents and 69 LVIS Jr stents). Intraoperative HR-CBCT showed that 1 Neuroform Atlas stent and 11 LVIS Jr stents had incomplete stent apposition at the aneurysm neck (P < .05). Perioperative complications occurred in 3 cases (2.22%). These comprised 2 cases of neurologic complications (1 case of distal intracranial vascular embolism and 1 case of cerebral parenchymal hemorrhage) and 1 case of severe postprocedural gastrointestinal hemorrhage. DSA follow-up showed 3 cases of aneurysm recurrence in the LVIS Jr group. Multivariate regression analysis showed that a stent angle of ≥75° (OR, 23.963; P = .005) or a parent artery diameter mismatch ratio of ≥1.25 (OR, 8.043; P = .037) were risk factors for incomplete stent apposition, especially for the LVIS Jr stent (OR, 20.297; P = .015). CONCLUSIONS The Neuroform Atlas stent and LVIS Jr stent are efficacious in the treatment of unruptured intracranial aneurysms in parent arteries of <2 mm in diameter. Apposition of the LVIS Jr stent was worse than in the Neuroform Atlas stent at the neck of some aneurysms.
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Affiliation(s)
- Tengfei Li
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Shuailong Shi
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Qingliang Chen
- Department of Interventional Radiology (Q.C.), The Third People's Hospital of Henan Province, Zhengzhou, China
| | - Chao Jiang
- Department of Neurology (C.J.), The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenxian Feng
- Department of Interventional Radiology (W.F.), Zhumadian Central Hospital, Zhumadian, China
| | - Qi Tian
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Shuhai Long
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Zhuangzhuang Wei
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Jie Yang
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Ye Wang
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Jianzhuang Ren
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Xinwei Han
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
| | - Ji Ma
- From the Department of Interventional Radiology (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Interventional Institute of Zhengzhou University (T.L., S.S., Q.T., S.L., Z.W., JY., Y.W., J.R., X.H., J.M.), Zhengzhou, China
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Kato N, Ishibashi T, Otani K, Abe Y, Sano T, Nagayama G, Fuga M, Hataoka S, Kan I, Murayama Y. Three-dimensional fusion imaging to assess apposition of low-profile visualized intraluminal support stent for intracranial aneurysm coiling. World Neurosurg X 2024; 23:100381. [PMID: 38706708 PMCID: PMC11066469 DOI: 10.1016/j.wnsx.2024.100381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 04/17/2024] [Indexed: 05/07/2024] Open
Abstract
Objective To investigate on three-dimensional (3D) fusion images the apposition of low-profile visualized intraluminal support (LVIS) stents in intracranial aneurysms after treatment and assess inter-rater reliability. Materials and methods Records of all patients with unruptured intracranial aneurysms who were treated with the LVIS stent were retrospectively accessed and included in this study. Two neurosurgeons evaluated the presence of malapposition between the vessel walls and the stent trunk (crescent sign) and the vessel wall and the stent edges (edge malappostion) on 3D fusion images. These images were high-resolution cone-beam computed tomography images of the LVIS stent fused with 3D-digital subtraction angiography images of the vessels. Associations between malapposition and aneurysm location were assessed by Fisher's exact test, and inter-rater agreement was estimated using Cohen's kappa statistic. Results Forty consecutive patients were included. In all patients, 3D fusion imaging successfully visualized the tantalum helical strands and the closed-cell structure of the nitinol material of the low-profile visualized intraluminal support. A crescent sign was observed in 27.5 % and edge malapposition in 47.5 % of the patients. Malapposition was not significantly associated with location (p = 0.23 crescent sign, p = 0.07 edge malapposition). Almost perfect (κ = 0.88) and substantial (κ = 0.76) agreements between the two raters were found for the detection of crescent signs and edge appositions, respectively. Conclusions 3D fusion imaging provided clear visualization of the LVIS stent and parent arteries, and could detect malapposition with excellent inter-rater reliability. This technique may provide valuable guidance for surgeons in determining postoperative management.
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Affiliation(s)
- Naoki Kato
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | - Toshihiro Ishibashi
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | | | - Yukiko Abe
- Department of Radiology, The Jikei University Hospital, Tokyo, Japan
| | - Tohru Sano
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | - Gota Nagayama
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | - Michiyasu Fuga
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | - Shunsuke Hataoka
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | - Issei Kan
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
| | - Yuichi Murayama
- Department of Neurosurgery, The Jikei University School of Medicine Tokyo, Tokyo, Japan
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Long S, Shi S, Tian Q, Wei Z, Ma J, Wang Y, Yang J, Han X, Li T. Correlation of Flow Diverter Malapposition at the Aneurysm Neck with Incomplete Aneurysm Occlusion in Patients with Small Intracranial Aneurysms: A Single-Center Experience. AJNR Am J Neuroradiol 2023; 45:16-21. [PMID: 38164561 PMCID: PMC10756576 DOI: 10.3174/ajnr.a8079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 10/29/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND AND PURPOSE Flow diversion treatment repairs aneurysms by altering the hemodynamics of the aneurysmal sac and providing a scaffold for endothelial cell adhesion. The purpose of this study was to investigate the correlation of flow diverter (FD) malapposition at the aneurysm neck with incomplete occlusion of small intracranial aneurysms (IAs) and investigate other factors that are possibly related to incomplete occlusion. MATERIALS AND METHODS From January 2019 to June 2022, the clinical and imaging data for 153 patients (175 aneurysms) with unruptured small IAs treated with flow diversion were retrospectively analyzed. FD apposition at the aneurysm neck was evaluated by high-resolution conebeam CT (HR-CBCT), and the complete occlusion rate for aneurysms was judged according to the latest follow-up conventional angiography findings (≥6 months). Multivariate logistic regression analysis was used to determine factors associated with incomplete aneurysm occlusion. RESULTS In total, 159 FDs were implanted in 153 patients. HR-CBCT performed after the deployment revealed FD malapposition at the aneurysm neck in 18 cases. According to the latest follow-up angiograms (average: 9.47 ± 3.35 months), the complete aneurysm occlusion rate was 66.9%. The complete occlusion rates for incomplete and complete stent apposition at the neck were 38.9% (7/18) and 70.1% (110/157), respectively. The results of regression analysis showed that an aneurysm sac with branch vessels (OR, 2.937; P = .018), incomplete stent apposition at the aneurysm neck (OR, 3.561; P = .023), and a large aneurysm diameter (OR, 1.533; P = .028) were positive predictors of incomplete aneurysm occlusion. CONCLUSIONS An aneurysm sac with branch vessels, a large aneurysm diameter, and malapposition at the aneurysm neck significantly affect aneurysm repair after FD stent-only treatment for small IAs.
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Affiliation(s)
- Shuhai Long
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shuailong Shi
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qi Tian
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhuangzhuang Wei
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ji Ma
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ye Wang
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jie Yang
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinwei Han
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Tengfei Li
- From the Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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Oh HS, Bae JW, Hong CE, Kim KM, Yoo DH, Kang HS, Cho YD. Stent-Assisted Coil Embolization Versus Flow-Diverting Stent in Unruptured Vertebral Artery Dissecting Aneurysms: Efficacy and Safety Comparison. Neurosurgery 2023; 93:120-127. [PMID: 36757195 DOI: 10.1227/neu.0000000000002384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 12/04/2022] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Reconstructive strategies for unruptured vertebral artery dissecting aneurysms (VADAs) have increasingly relied on newly developed endovascular devices. However, their clinical performance metrics are seldom reported. OBJECTIVE To compare stent-assisted coil embolization (SACE) and flow-diverting stent (FDS) deployment as treatments for unruptured VADAs, focusing on efficacy and safety. METHODS A total of 72 VADAs were submitted to SACE (n = 48) or FDS (n = 24) between April 2009 and September 2021. We reviewed medical records and radiological data to assess efficacy and safety outcomes by method, building an inverse probability of treatment-weighted (IPTW) logistic regression model and conducting survival analyses. RESULTS Ultimately, 24 aneurysms (33.3%) showed signs of recanalization (major, 14; minor, 10) at 6-month follow-up. Initially determined 6-month rates of overall (SACE, 31.2%; FDS, 41.7%) and major (SACE, 20.8%; FDS, 16.7%) recanalization did not differ significantly by modality; but in the IPTW logistic regression model, adjusted for aneurysm morphology, major recanalization at 6 months was lower for the FDS (vs SACE) subset (odds ratio = 0.196; P = .027). Likewise, the cumulative rate of major recanalization was more favorable for the FDS (vs SACE) subset (hazard ratio = 0.291; P = .048) in IPTW Cox proportional hazards model adjusted for aneurysm morphology. Modality-based assessments of procedural and delayed complications were similar. CONCLUSION Both reconstructive VADA interventions are safe and effective by adjusting treatment modality depending on the angioanatomic configuration. However, follow-up data after treatment proved more favorable for FDS deployment than for SACE in limiting major recanalization. Case-controlled studies of more sizeable cohorts are needed for corroboration.
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Affiliation(s)
- Han San Oh
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jin Woo Bae
- Department of Neurosurgery, Inha University Hospital, Incheon, Korea
| | - Chang-Eui Hong
- Department of Neurosurgery, Veterans Health Service Medical Center, Seoul, Korea
| | - Kang Min Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Hyun Yoo
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun-Seung Kang
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Young Dae Cho
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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Mantilla D, Ferreira-Prada CA, Galvis M, Vargas O, Valenzuela-Santos C, Canci P, Ochoa M, Nicoud F, Costalat V. Clinical impact of Sim & Size ® simulation software in the treatment of patients with cerebral aneurysms with flow-diverter Pipeline stents. Interv Neuroradiol 2023; 29:47-55. [PMID: 34967258 PMCID: PMC9893244 DOI: 10.1177/15910199211068668] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES This study evaluated the clinical impact of the Sim&Size® simulation software on the endovascular treatment with flow-diverter stents of patients with unruptured saccular intracranial aneurysms. METHODS This monocentric retrospective study evaluated a cohort of patients treated with flow-divert stents between June 1, 2014, and December 31, 2019, for cerebral aneurysms. Patients belonged to two groups, patients treated with and without the Sim&Size® simulation software. Univariate, bivariate, and multivariate analyses were used to evaluate the clinical impact of simulation software. RESULTS Out of the 73 interventions involving 68 patients analyzed by the study, 76.7% were simulated using the Sim&Size® simulation software, and 23.3% were not. Patients treated with the simulation software had shorter stent lengths (16.00 mm vs. 20.00 mm p-value = 0.001) and surgical time (100.00 min vs. 118.00 min p-value = 0.496). Also, fewer of them required more than one stent (3.6% vs. 17.6% p-value = 0.079). Three patients belonging to the non-stimulated group presented hemorrhagic complications. CONCLUSIONS Using the Sim&Size® simulation software for the endovascular treatment of intracranial aneurysms with pipeline flow-diverter stents reduces the stent length.
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Affiliation(s)
- Daniel Mantilla
- Institut Montpelliérain Alexander, Grothendieck, Univ. Montpellier,
Montpellier, France
- Interventional radiology Department. Universidad Autónoma de
Bucaramanga, Bucaramanga, Colombia
| | - Carlos A Ferreira-Prada
- Interventional radiology Department. Universidad Autónoma de
Bucaramanga, Bucaramanga, Colombia
- Interventional radiology Department, Fundación oftalmológica de
Santander - Clínica Ardila Lülle, Floridablanca, Colombia
| | - Melquisedec Galvis
- Interventional radiology Department. Universidad Autónoma de
Bucaramanga, Bucaramanga, Colombia
- Interventional radiology Department, Fundación oftalmológica de
Santander - Clínica Ardila Lülle, Floridablanca, Colombia
| | - Oliverio Vargas
- Interventional radiology Department. Universidad Autónoma de
Bucaramanga, Bucaramanga, Colombia
- Radiology Department, Fundación oftalmológica de
Santander, Clínica Ardila Lülle, Floridablanca, Colombia
| | - Carolina Valenzuela-Santos
- Physician. Radiology Deparment, Fundación oftalmológica de
Santander, Clínica Ardila Lülle, Floridablanca, Colombia
| | | | - Miguel Ochoa
- Clinical Research Group-UNAB, Universidad Autónoma de
Bucaramanga, Bucaramanga, Colombia
| | - Franck Nicoud
- Institut Montpelliérain Alexander, Grothendieck, CNRS, Univ.
Montpellier, Montpellier, France
| | - Vincent Costalat
- Neuroradiology. Hôpital Güi-de-Chauliac, CHU de Montpellier, Montpellier, France
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