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Interventional Neuroradiology

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https://www.readbyqxmd.com/read/29368536/delayed-migration-of-squid-18-following-embolisation-of-a-direct-carotico-cavernous-fistula
#1
Soumik Das, Arun Kumar Gupta, Arvinda Hanumathapura Ramalingiah, Sarbesh Tiwari, Nishtha Yadav
We report a case of delayed migration of Squid 18 following treatment of a direct carotico-cavernous fistula.
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29357768/ruptured-dissecting-aneurysm-in-communicating-internal-carotid-artery-segments-treated-using-a-stent-assisted-endovascular-technique
#2
Chae Wook Huh, Sung-Chul Jin
Hemorrhagic intracranial dissecting aneurysms are known to have a poor natural history and an increased tendency to rebleed. The communicating segment of the internal carotid artery (ICA) is an infrequent site of dissection that is difficult to manage using deconstructive endovascular treatment because of the need to preserve important vascular branches. We report two cases of ruptured dissecting aneurysms that occurred in communicating segments of the ICA and treated using a reconstructive endovascular technique involving stent-assisted coiling...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29350092/focus-on-the-target-angiographic-features-of-the-fistulous-point-and-prognosis-of-transvenous-embolization-of-cavernous-sinus-dural-arteriovenous-fistula
#3
Hui Guo, QianKun Yin, Peng Liu, Ning Guan, Xiaochuan Huo, Youxiang Li
Background and purpose Transvenous embolization (TVE) is widely utilized as an effective and safe treatment option for cavernous sinus dural arteriovenous fistula (CS-dAVF); however, detecting the exact location of the fistula is challenging. The present study identified the angiographic features of the fistulous point and evaluated the match with the microcatheter tip and fistulous point. Materials and methods An analysis cohort of 45 consecutive patients with CS-dAVF treated by TVE was analyzed retrospectively...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29343148/predictors-of-intracranial-hemorrhage-volume-and-distribution-in-brain-arteriovenous-malformation
#4
Jay F Yu, Andrew D Nicholson, Jeffrey Nelson, Matthew D Alexander, Stephanie H Tse, Steven W Hetts, J Claude Hemphill, Helen Kim, Daniel L Cooke
Background and purpose Despite evidence regarding risk factors for brain arteriovenous malformation (bAVM)-associated spontaneous intracranial hemorrhage (ICH), few data exist describing the spectrum of clinical outcomes that bAVM-associated ICH may manifest. This study aimed to identify the demographical, clinical, and bAVM anatomical variables associated with ICH volume and the presence of intraventricular hemorrhage (IVH) of ruptured bAVMs, two indicators of worse clinical outcome, to help better predict outcome for unruptured bAVMs...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29343147/estimation-of-intra-arterial-chemotherapy-distribution-to-the-retina-in-pediatric-retinoblastoma-patients-using-quantitative-digital-subtraction-angiography
#5
Sravani Kondapavulur, Daniel L Cooke, Andrew Kao, Matthew R Amans, Matthew Alexander, Robert Darflinger, Christopher F Dowd, Randall T Higashida, Bertil Damato, Van V Halbach, Katherine K Matthay, Steven W Hetts
Background and purpose The purpose of this article is to estimate the distribution of superselective intra-arterial chemotherapy (IAC) delivery to ocular target tissue using quantitative digital subtraction angiography (qDSA). Materials and methods From March 2010 to January 2016, 50 ophthalmic artery contrast DSAs obtained immediately prior to IAC infusions in 22 patients were analyzed. This study was conducted under a retrospective review IRB (no. 10-01862). Parametric color-coded DSAs (iFlow, Siemens Medical) were post-processed (MATLAB, The Mathworks Inc...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29239687/open-cell-stent-and-use-of-cone-beam-ct-enables-a-safe-and-effective-coil-embolization-of-true-ophthalmic-artery-and-anterior-choroidal-artery-aneurysms-with-preservation-of-parent-vessel-clinical-and-angiographic-results
#6
Samuel Y Hou, Anna Luisa Kühn, Ajit S Puri, Ajay K Wakhloo
Background Treatment of true ophthalmic artery (OA) or anterior choroidal artery (AChA) aneurysms with preservation of the parent vessel may be challenging. Flow diverters have limitations when dealing with branch vessels arising from the aneurysm sac. Visual loss or AChA territory infarcts have been reported both for surgical and endovascular treatment. Methods We evaluated the safety and efficacy of an open-cell design, laser-cut, self-expanding Nitinol stent, and use of cone-beam computed tomography (CBCT) for stent-assisted coil embolization...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29239686/recurrent-posterior-circulation-infarcts-secondary-to-vertebral-artery-external-compression-treated-with-endovascular-deconstruction
#7
Aldo Fabrizio Berti, Atif Zafar, Asad Ikram, Christopher S Calder, Danielle Eckart Sorte
When multiple, recurrent infarcts occur in spite of maximal medical management, the level of suspicion for atypical vascular injury should be heightened. We present a case of a patient who presented with recurrent posterior circulation infarcts despite optimized medical management. On imaging, he was found to have external anatomical vertebral artery muscular and/or osseous compression leading to repetitive vascular injury and strokes. Recurrent intimal injury and vertebral artery to intracranial emboli despite anticoagulation and subsequent dual antiplatelet therapy necessitated definitive operative management...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29239685/in-vitro-angiographic-comparison-of-the-flow-diversion-performance-of-five-neurovascular-stents
#8
Ronak J Dholakia, Ari D Kappel, Andrew Pagano, Henry H Woo, Baruch B Lieber, David J Fiorella, Chander Sadasivan
Background and purpose Data differentiating flow diversion properties of commercially available low- and high-porosity stents are limited. This in vitro study applies angiographic analysis of intra-aneurysmal flow to compare the flow-diversion performance of five neurovascular devices in idealized sidewall and bifurcation aneurysm models. Methods Five commercial devices (Enterprise, Neuroform, LVIS, FRED, and Pipeline) were implanted in silicone sidewall and bifurcation aneurysm models under physiological average flow of blood analog fluid...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29239684/a-new-retrieval-method-for-an-already-detached-coil-mass-in-the-aneurysm-sac-thread-and-catch-technique
#9
Sang Hun Lee, Dae Chul Suh, Jung Cheol Park, Deok Hee Lee
During endovascular coiling, unexpected procedure-related complications such as coil misplacement have been reported, and these complications may induce emboli or thrombotic vessel occlusion. A malpositioned detached coil contained and immobilized within an intracranial aneurysm is difficult to remove using current methods. We report an effective retrieval technique for detached coils. The 'thread and catch technique' can be used when the malpositioned detached coil is immobilized within the aneurysm.
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29237321/impact-of-onset-to-groin-puncture-time-within-three-hours-on-functional-outcomes-in-mechanical-thrombectomy-for-acute-large-vessel-occlusion
#10
Takahiro Ota, Yasuhiro Nishiyama, Satoshi Koizumi, Tomonari Saito, Masayuki Ueda, Nobuhito Saito
Introduction Endovascular treatment for acute ischemic stroke with acute large-vessel occlusion (ALVO) has established benefits, and rapid treatment is vital for mechanical thrombectomy in ALVO. Time from onset of stroke to groin puncture (OTP) is a practical and useful clinical marker, and OTP should be shortened to obtain the maximum benefit of thrombectomy. Objective The aim of the present study was to assess the impact of early treatment of anterior circulation stroke within three hours after symptom onset and to evaluate the role of OTP in determining outcomes after endovascular therapy...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29231794/intracranial-contrast-transit-times-on-digital-subtraction-angiography-decrease-more-in-patients-with-delayed-intraparenchymal-hemorrhage-after-pipeline
#11
Denise Brunozzi, Sophia F Shakur, Fady T Charbel, Ali Alaraj
Background Pipeline embolization devices (PEDs) are used for endovascular treatment of cerebral aneurysms but can be associated with delayed ipsilateral intraparenchymal hemorrhage (DIPH). Changes in intracranial hemodynamics after PED are poorly understood. Objective Here, we assess hemodynamic changes after PED in patients and compare these changes in patients with and without DIPH (DIPH+ and DIPH-). Methods Records of patients with distal internal carotid artery (ICA) aneurysms treated with PED at our institution between 2012 and 2017 were retrospectively reviewed...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29231793/acute-rerupture-after-coil-embolization-of-ruptured-intracranial-saccular-aneurysms-a-literature-review
#12
Kailing Li, Yunbao Guo, Ying Zhao, Baofeng Xu, Kan Xu, Jinlu Yu
Acute rerupture after coil embolization is defined as rerupture within three days after treatment; its prognosis is worse than that of rebleeding at other time periods. However, to date, little is known about complications during the acute phase. Therefore, we used the PubMed database to perform a review of acute rerupture after coil embolization of ruptured intracranial saccular aneurysms and increase our understanding. After reviewing the complications, we found that the cause of acute rerupture is unclear, but the following risk factors are involved: incomplete occlusion of the initial aneurysm, the presence of a hematoma adjacent to a ruptured aneurysm, an aneurysmal outpouching, poor Hunt-Hess grade at the time of treatment, and the location of the aneurysm in an anterior communicating artery...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29199500/management-of-a-rare-case-of-posterior-condylar-canal-dural-arteriovenous-fistula-presenting-with-subarachnoid-haemorrhage-a-case-report-and-review-of-literature
#13
Somorendra Singh Shambanduram, Leve Joseph Devarajan Sebastian, Nishchint Jain, Ajay Garg, Shailesh B Gaikwad
Posterior condylar canal dural arteriovenous fistula (PCC dAVF) is a rare entity with only three cases having been reported so far in the English literature. We describe the clinical presentation, imaging, and endovascular management of an elderly man with left PCC dAVF presenting with subarachnoid haemorrhage (SAH). Endovascular management of such cases requires thorough understanding of the vascular anatomy around the craniovertebral junction (CVJ) and variable bridging vein draining patterns. The fistula in our case was fed by the posterior meningeal branch of the left vertebral artery and was draining through a dilated and tortuous medullary bridging vein into the antero-lateral pontomedullary venous system...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29183173/evaluation-for-shunted-pouches-of-cavernous-sinus-dural-arteriovenous-fistula-and-the-treatment-outcome-of-transvenous-embolization
#14
Masaki Sato, Takashi Izumi, Noriaki Matsubara, Masahiro Nishihori, Shigeru Miyachi, Toshihiko Wakabayashi
Background This study aimed to evaluate the detailed location and the number (single or multiple) of cavernous sinus dural arteriovenous fistula (CSDAVF) shunted pouches as well as the relationship between the characteristics of shunted pouch(es) and the treatment outcome of transvenous embolization for CSDAVF. Methods A total of 23 consecutive patients with CSDAVFs who underwent angiogram and transvenous embolization were retrospectively analyzed. Shunted pouches were assessed using three-dimensional angiogram and multiplanar reformatted image obtained from the rotational angiogram data...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29160136/utility-of-bulging-technique-for-endovascular-treatment-of-small-and-wide-necked-aneurysms-with-a-low-profile-visualized-intraluminal-support-lvis-jr-device-a-case-report-and-review-of-the-literature
#15
Akihiro Inoue, Masahiko Tagawa, Shirabe Matsumoto, Masahiro Nishikawa, Kosuke Kusakabe, Hideaki Watanabe, Takeharu Kunieda
Small and broad-necked aneurysms are generally very difficult to treat using endovascular therapy. The arrival of the low-profile stent (e.g., Low-profile Visualized Intraluminal Support; LVIS) has enabled reconstructive treatment for these aneurysms. In addition, the bulging technique using LVIS is an effective and attractive technique for performing stent-assisted coiling to preserve parent arteries and achieve neck coverage. We report here a patient with a small and wide-necked ruptured basilar artery (BA) top aneurysm, in whom successful treatment was achieved by stent-assisted coiling with LVIS Jr...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29145742/improving-mechanical-thrombectomy-time-metrics-in-the-angiography-suite-stroke-cart-parallel-workflows-and-conscious-sedation
#16
Fabio Settecase, David B McCoy, Robert Darflinger, Matthew D Alexander, Daniel L Cooke, Christopher F Dowd, Steven W Hetts, Randall T Higashida, Van V Halbach, Matthew R Amans
Purpose Earlier reperfusion of large-vessel occlusion (LVO) stroke improves functional outcomes. We hypothesize that use of a stroke cart in the angiography suite, containing all commonly used procedural equipment in a mechanical thrombectomy, combined with parallel staff workflows, and use of conscious sedation when possible, improve mechanical thrombectomy time metrics. Methods We identified 47 consecutive LVO patients who underwent mechanical thrombectomy at our center, retrospectively and prospectively from implementation of these three workflow changes (19 pre- and 28 post-)...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29119877/direct-puncture-onyx-embolization-of-a-large-calvarial-metastasis-with-intracranial-extension-case-report
#17
Minerva H Zhou, Gavin P Dunn, Joshua W Osbun, DeWitte T Cross, Christopher J Moran, Ralph G Dacey, Akash P Kansagra
We report a case of renal cell carcinoma (RCC) metastasis to the calvarium and describe a strategy for percutaneous embolization of hypervascular calvarial tumors with intracranial extension. An elderly patient with history of RCC presented with left-sided weakness. Imaging studies showed a large right frontoparietal calvarial mass with intra- and extracranial extension. The tumor was devascularized by direct puncture tumor embolization using Onyx 18, allowing subsequent operative resection without significant blood loss or the need for flap reconstruction of the scalp...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28994621/a-rare-anomalous-origin-of-right-vertebral-artery-with-double-branch-first-case-report
#18
Ya-Dong Liu, Zhi-Qiang Li, Jing-Jing Fu, Ya-Jun E
Vertebral artery origin anomalies are typically incidental findings during angiography. We present an extremely rare variant in which the right vertebral artery has a double origin from the right subclavian artery and right common carotid artery in association with an aberrant right subclavian artery, which has never been reported before.
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29506435/welcome-message-from-the-president-of-asian-australasian-federation-of-interventional-and-therapeutic-neuroradiology-aafitn
#19
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29506433/welcome-message-from-the-organising-chairman
#20
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Interventional Neuroradiology
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