scholarly journals Nongalenic arteriovenous fistulas: history of treatment and technology

2006 ◽  
Vol 20 (6) ◽  
pp. 1-8 ◽  
Author(s):  
Kristen Upchurch ◽  
Lei Feng ◽  
Gary R. Duckwiler ◽  
John G. Frazee ◽  
Neil A. Martin ◽  
...  
Keyword(s):  
Open Surgery ◽  
Interventional Neuroradiology ◽  
Endovascular Embolization ◽  
High Flow ◽  
Vascular Lesions ◽  
Arteriovenous Fistulas ◽  
The Past ◽  
Technological Developments ◽  
History Of ◽  
Endovascular Technology

✓ Nongalenic cerebral arteriovenous fistulas (AVFs) are uncommon, high-flow vascular lesions first treated by Walter Dandy and his colleagues by using open surgery with ligation of the feeding artery. Due to advances in endovascular technology over the past four decades that make possible the control of high flow in AVFs, treatment has evolved from the sole option of surgery to include the alternative or adjunct option of endovascular embolization. The authors of this review discuss the history of nongalenic AVF treatment, including techniques of both surgery and interventional neuroradiology and the technological developments underlying them.

scholarly journals Combined surgical and endovascular treatment of complex high-flow conus medullaris arteriovenous fistula associated with Parkes Weber syndrome: case report

2016 ◽  
Vol 25 (2) ◽  
pp. 234-238 ◽  
Author(s):  
Arya N. Bagherpour ◽  
Gustavo J. Rodriguez ◽  
Chetan Moorthy ◽  
Todd T. Trier ◽  
Alberto Maud
Keyword(s):  
Case Report ◽  
Adolescent Girl ◽  
Conus Medullaris ◽  
Endovascular Embolization ◽  
High Flow ◽  
Vascular Lesions ◽  
Present Case Report ◽  
Arteriovenous Fistulas ◽  
Weber Syndrome

Parkes Weber syndrome (PWS) is a congenital overgrowth disorder characterized by unilateral limb and axial hypertrophy, capillary malformations of the skin, and high-flow arteriovenous fistulas (AVFs). Spinal AVFs in the setting of PWS are challenging vascular lesions that often contain multiple arteriovenous (AV) shunts. The present case report highlights an adolescent girl with PWS who presented with a ruptured complex high-flow conus medullaris AVF. She was successfully treated with endovascular embolization and microsurgery. At the 2-year follow-up, the patient remained free of neurological symptoms and had no recurrence of the vascular malformation.

Moguls of the Chinese Cinema: The Story of the Shaw Brothers in Shanghai, Hong Kong and Singapore, 1924–2002

2007 ◽  
Vol 41 (4) ◽  
pp. 665-682 ◽  
Author(s):  
STEPHANIE PO-YIN CHUNG
Keyword(s):  
Hong Kong ◽  
Vertical Integration ◽  
Chinese Family ◽  
Institutional Evolution ◽  
Chinese Cinema ◽  
The Past ◽  
Production Distribution ◽  
Retail Outlets ◽  
Technological Developments ◽  
History Of

The history of the Shaw enterprise in Shanghai, Hong Kong and Singapore, is a history of Chinese cinema in a century of business evolution. The Shaw industrial model of “vertical integration”, which combines production, distribution with exhibition, keeps pace with the technological developments and manages to expand its retail outlets from the stage to cinema, television, DVD and the Internet. Although the Shaw organization embraces a western industrial model to expand its business, it retains the very nature of a traditional Chinese family business. The issues surrounding the cultural and institutional evolution of the Shaw enterprise over the past 80 years are profound indications of its time.

Arteriovenous Malformation

2018 ◽  
Author(s):  
Allison Spinelli ◽  
Liang Huang
Keyword(s):  
Arteriovenous Malformation ◽  
Interventional Neuroradiology ◽  
Endovascular Embolization ◽  
Young Population ◽  
Management Options ◽  
Stereotactic Radiation ◽  
The Past ◽  
Radiation Management ◽  
Arteries And Veins ◽  
The Brain

Arteriovenous malformation (AVM) is an abnormal connection between arteries and veins, bypassing the capillary system, which may occur in the brain or the spinal cord. AVMs are challenging to diagnose, and the symptoms may be subtle or dramatic. The location and extent of the lesion will determine its potential for morbidity as these lesions also affect a young population. Most importantly, the technology and evolution of treatment for AVMs has changed dramatically over the past two decades and now incorporates interventional neuroradiology and stereotactic radiation. Management options include conservative management, surgical resection, endovascular embolization, and stereotactic surgery. This chapter’s discussion will cover surgical and interventional modes of treatment of cerebral AVMs.

scholarly journals Drawing on the Past to Shape the Future of Synthetic Yeast Research

2020 ◽  
Vol 21 (19) ◽  
pp. 7156
Author(s):  
Thomas A. Dixon ◽  
Isak S. Pretorius
Keyword(s):  
History Of Science ◽  
Human Society ◽  
The Past ◽  
Environmental Recovery ◽  
Collaborative Innovation ◽  
The World ◽  
Technological Developments ◽  
History Of ◽  
Synthetic Genomics ◽  
Global Events

Some years inspire more hindsight reflection and future-gazing than others. This is even more so in 2020 with its evocation of perfect vision and the landmark ring to it. However, no futurist can reliably predict what the world will look like the next time that a year’s first two digits will match the second two digits—a numerical pattern that only occurs once in a century. As we leap into a new decade, amid uncertainties triggered by unforeseen global events—such as the outbreak of a worldwide pandemic, the accompanying economic hardship, and intensifying geopolitical tensions—it is important to note the blistering pace of 21st century technological developments indicate that while hindsight might be 20/20, foresight is 50/50. The history of science shows us that imaginative ideas, research excellence, and collaborative innovation can, for example, significantly contribute to the economic, cultural, social, and environmental recovery of a post-COVID-19 world. This article reflects on a history of yeast research to indicate the potential that arises from advances in science, and how this can contribute to the ongoing recovery and development of human society. Future breakthroughs in synthetic genomics are likely to unlock new avenues of impactful discoveries and solutions to some of the world’s greatest challenges.

Efficacy and safety of embolization of dural arteriovenous fistulas via the ophthalmic artery

2020 ◽  
pp. 159101992096927
Author(s):  
Vera A Mayercik ◽  
Eric S Sussman ◽  
Benjamin Pulli ◽  
Robert L Dodd ◽  
Huy M Do ◽  
...  
Keyword(s):  
Ophthalmic Artery ◽  
Vision Loss ◽  
Arterial Embolization ◽  
Endovascular Embolization ◽  
Vascular Lesions ◽  
Ischemic Optic Neuropathy ◽  
Efficacy And Safety ◽  
Artery Embolization ◽  
Permanent Disability ◽  
Arteriovenous Fistulas

Introduction Dural arteriovenous fistulae (DAVF) are vascular lesions with arteriovenous shunting that may be treated with surgical obliteration or endovascular embolization. Some DAVF, such as anterior cranial fossa DAVF (AC-DAVF) derive their arterial supply from ophthalmic artery branches in nearly all cases, and trans-arterial embolization carries a risk of vision loss. We determined the efficacy and safety of trans-ophthalmic artery embolization of DAVF. Materials and methods We performed a retrospective cohort study of all patients with DAVF treated by trans-ophthalmic artery embolization from 2012 to 2020. Primary outcome was angiographic cure of the DAVF. Secondary outcomes included vision loss, visual impairment, orbital cranial nerve injury, stroke, modified Rankin Scale at 90-days, and mortality. Results 12 patients met inclusion criteria (9 males; 3 females). 10 patients had AC-DAVF. Patient age was 59.7  ±  9.5 (mean ± SD) years. Patients presented with intracranial hemorrhage (4 patients), headache (4 patients), amaurosis fugax (1 patients), or were incidentally discovered (2 patients). DAVF Cognard grades were: II (1 patient), III (6 patients), and IV (5 patients). DAVF were embolized with Onyx (10 patients), nBCA glue (1 patient), and a combination of coils and Onyx (1 patient). DAVF cure was achieved in 11 patients (92%). No patients experienced vision loss, death, or permanent disability. One patient experienced a minor complication of blurry vision attributed to posterior ischemic optic neuropathy. 90-day mRS was 0 (10 patients) and 1 (2 patients). Conclusions Trans-ophthalmic artery embolization is an effective and safe treatment for DAVF.

Treatment of brain arteriovenous malformations with high-flow arteriovenous fistulas: risk and complications associated with endovascular embolization in multimodality treatment

2010 ◽  
Vol 113 (4) ◽  
pp. 715-722 ◽  
Author(s):  
Ichiro Yuki ◽  
Robert H. Kim ◽  
Gary Duckwiler ◽  
Reza Jahan ◽  
Satoshi Tateshima ◽  
...  
Keyword(s):  
Arteriovenous Malformations ◽  
Multimodality Treatment ◽  
Endovascular Embolization ◽  
High Flow ◽  
Special Focus ◽  
Arteriovenous Fistulas ◽  
Brain Arteriovenous Malformations ◽  
Superselective Angiography ◽  
Fistula Treatment ◽  
Brain Avms

Object High-flow fistulas associated with brain arteriovenous malformations (AVMs) pose a significant challenge to both stereotactic radiosurgery (SRS) and surgical treatment. The purpose of this study was to examine the outcomes of multimodality treatment of AVMs in association with a large arteriovenous fistula (AVF), with a special focus on endovascular embolization and its associated complications. Methods One hundred ninety-two patients harboring cerebral AVMs underwent endovascular treatment in the authors' department between 1997 and 2003. Of these, the authors selected 74 patients presenting with an AVM associated with high-flow AVF(s) for a retrospective analysis based on the findings of superselective angiography. After endovascular embolization, 32 patients underwent resection, 33 underwent either SRS or hypofractionated stereotactic radiotherapy (HSRT), and 3 underwent both surgery and SRS. Six patients underwent embolization only. Immediate and midterm treatment outcomes were analyzed. Results Fifty-seven (77%) of the 74 patients had AVMs that were Spetzler-Martin Grade III or higher. A complete resection was achieved in all 32 patients. Of patients who underwent SRS/HSRT, 13 patients (39.3%) had either complete or > 90% obliteration of the AVM, and 2 patients (6.1%) had incomplete obliteration. Fourteen patients (42.4%) with residual AVM underwent repeated radiotherapy (and remain under observation). Of the 3 patients who underwent both SRS and resection, resection was complete in 2 and incomplete in one. No follow-up was obtained in 6 patients (8.1%). An endovascular complication was observed in 4 patients (5.4%). Fistula embolization was safely performed in every patient, whereas every endovascular complication was associated with other procedures such as nidus embolization. Conclusions Endovascular occlusion of the fistulous component was successfully achieved in every patient; every endovascular complication in this series was related to other procedures such as nidus embolization. The importance of the fistula treatment should be emphasized to minimize the endovascular complications and to maximize the treatment effect when a multimodality therapy is used to treat brain AVMs with large AVF.

scholarly journals Meningiomas: the role of preoperative angiography and embolization

2003 ◽  
Vol 15 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Christopher F. Dowd ◽  
Van V. Halbach ◽  
Randall T. Higashida
Keyword(s):  
Standard Procedure ◽  
Transarterial Embolization ◽  
Interventional Neuroradiology ◽  
Preoperative Management ◽  
The Past ◽  
Technological Developments ◽  
Embolic Materials ◽  
Evaluation Techniques ◽  
Angiography And Embolization

The field of interventional neuroradiology has experienced remarkable technological developments in microcatheters and embolic materials during the past two decades. The realm of meningioma therapy has benefited handsomely from the combination of these technical improvements and the knowledge of experienced practitioners in this field. Transarterial embolization has become a standard procedure in the preoperative management of meningiomas. The authors describe the indications, pretreatment evaluation, techniques, and outcomes when preoperative angiography and embolization are performed in the treatment of these tumors.

scholarly journals Overview of the current role of endovascular and surgical treatment in spinal dural arteriovenous fistulas

2009 ◽  
Vol 26 (1) ◽  
pp. E8 ◽  
Author(s):  
Amir R. Dehdashti ◽  
Leodante B. Da Costa ◽  
Karel G. terBrugge ◽  
Robert A. Willinsky ◽  
Michael Tymianski ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Vascular Malformations ◽  
Endovascular Embolization ◽  
Vascular Lesions ◽  
Current Role ◽  
Arteriovenous Fistulas ◽  
Dural Arteriovenous Fistulas ◽  
Complete Obliteration ◽  
Spinal Dural Arteriovenous Fistulas

Dural arteriovenous fistulas are the most common vascular malformations of the spinal cord. These benign vascular lesions are considered straightforward targets of surgical treatment and possibly endovascular embolization, but the outcome in these cases depends mainly on the extent of clinical dysfunction at the time of the diagnosis. A timely diagnosis is an equally important factor, with early treatment regardless of the type more likely to yield significant improvements in neurological functioning. The outcomes after surgical and endovascular treatment are similar if complete obliteration of the fistulous site is obtained. In the present study, the authors evaluated the current role of each modality in the management of these interesting lesions.

The Past and Future of Joycean Copyright

2017 ◽  
Author(s):  
Amanda Golden
Keyword(s):  
First Century ◽  
The Novel ◽  
Legal Regime ◽  
The Past ◽  
Technological Developments ◽  
History Of ◽  
Twenty First Century

This essay chronicles how copyright has affected the publication of James Joyce's work, the scholarly and aesthetic use of Joyce's words, and how the legal regime has been used in criticism. It offers prognosticatory thoughts on the outcomes of recent technological developments and copyright changes: "new scholarship can quote more liberally and editions can present the novel in a fashion that speaks to the changing scope of Joyce scholarship in the twenty-first century." While research continues in the history of Joyce and copyright, this essay gives an overview of how this legal regime has inflected Joyce studies thus far.

Manifestations of the Flying Dutchman: On Materializing Ghosts and (Not) Remembering the Colonial Past

2015 ◽  
Vol 4 (2) ◽  
pp. 187-205
Author(s):  
Agnes Andeweg
Keyword(s):  
Twentieth Century ◽  
Real Object ◽  
Technological Advancement ◽  
Colonial History ◽  
Spectral Character ◽  
The Past ◽  
The Future ◽  
Technological Developments ◽  
History Of ◽  
Wide Dissemination

This article investigates remediations of the Flying Dutchman legend – the story about a ghost ship doomed to sail the oceans forever – in English and Dutch sources from the nineteenth and twentieth century. It explains the popularity and wide dissemination of the Flying Dutchman by interpreting the story, firstly, within the context of Anglo-Dutch colonial competition and, secondly, within the context of new technological developments, paying particular attention to the moments when the Flying Dutchman seems to lose its spectral character and becomes a real object or person. Of the two interpretations of the spectre put forward here – staging colonial history versus staging technological advancement –, the second seems to be the more dominant throughout the history of continuous remediation and adaptation of the Flying Dutchman. When the ghost materializes, temporality is reversed: the focus shifts from the present's fraught relation to the past to the present's imagination of the future. In the dissemination of the figure itself however the colonial dimension is often still present.

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