Cerebral hemodynamics and the role of transcranial Doppler applications in the assessment and management of cerebral arteriovenous malformations

2016 ◽  
Vol 30 ◽  
pp. 24-30 ◽  
Author(s):  
Kathryn J. Busch ◽  
Hosen Kiat ◽  
Michael Stephen ◽  
Mary Simons ◽  
Alberto Avolio ◽  
...  
Keyword(s):  
Transcranial Doppler ◽  
Arteriovenous Malformations ◽  
Cerebral Hemodynamics ◽  
Cerebral Arteriovenous Malformations

Advances in Radiosurgery for Arteriovenous Malformations of the Brain

Neurosurgery ◽  
2014 ◽  
Vol 74 (suppl_1) ◽  
pp. S50-S59 ◽  
Author(s):  
Benjamin A. Rubin ◽  
Andrew Brunswick ◽  
Howard Riina ◽  
Douglas Kondziolka
Keyword(s):  
Natural History ◽  
Stereotactic Radiosurgery ◽  
Endovascular Therapy ◽  
Arteriovenous Malformations ◽  
Morbidity And Mortality ◽  
Cerebral Arteriovenous Malformations ◽  
History Of ◽  
The Brain ◽  
Management Algorithms

Abstract Arteriovenous malformations of the brain are a considerable source of morbidity and mortality for patients who harbor them. Although our understanding of this disease has improved, it remains in evolution. Advances in our ability to treat these malformations and the modes by which we address them have also improved substantially. However, the variety of patient clinical and disease scenarios often leads us into challenging and complex management algorithms as we balance the risks of treatment against the natural history of the disease. The goal of this article is to provide a focused review of the natural history of cerebral arteriovenous malformations, to examine the role of stereotactic radiosurgery, to discuss the role of endovascular therapy as it relates to stereotactic radiosurgery, and to look toward future advances.

Assessing the Role of Preoperative Embolization in the Surgical Management of Cerebral Arteriovenous Malformations

2017 ◽  
Vol 104 ◽  
pp. 430-441 ◽  
Author(s):  
Andrew S. Luksik ◽  
Jody Law ◽  
Wuyang Yang ◽  
Tomas Garzon-Muvdi ◽  
Justin M. Caplan ◽  
...  
Keyword(s):  
Surgical Management ◽  
Arteriovenous Malformations ◽  
Preoperative Embolization ◽  
Cerebral Arteriovenous Malformations

The Role of Intravascular Embolization Prior to Radiosurgery of Cerebral Arteriovenous Malformations

1999 ◽  
Vol 5 (1_suppl) ◽  
pp. 171-176 ◽  
Author(s):  
H.K. Inoue ◽  
Y. Nagaseki ◽  
I. Naitou ◽  
M. Negishi ◽  
M. Hirato ◽  
...  
Keyword(s):  
Arteriovenous Malformations ◽  
Gamma Knife Radiosurgery ◽  
Latency Period ◽  
High Flow ◽  
Low Flow ◽  
Flow Volume ◽  
Cerebral Arteriovenous Malformations ◽  
Venous Obstruction ◽  
Risk Of Hemorrhage

The role of intravascular embolization prior to radiosurgery of cerebral arteriovenous malformations was evaluated based on the basis of the results of gamma knife radiosurgery in relation to hemorrhage and early obliteration after treatment. Nine of 213 patients experienced hemorrhage 4 to 42 months after radiosurgery. All AVMs in these patients had dilated feeding arteries, and the flow of the AVM was rapid and/or high. An intranidal aneurysm was seen in one patient. Drainage of all AVMs consisted of a single and/or deep draining veins, and venous obstruction was found in six. Sixty-three of 87 patients followed for more than four years after radiosurgery were examined angiographically, and total obliteration of AVM was observed in 52 of them (82.5%). Early obliteration was found in 19 of the 34 patients examined within 12 months. The obliteration rate was significantly higher in slow- and low-flow AVMs (73.9%) than in rapid- and/or high-flow AVMs (18.2%). It is concluded that the role of intravascular embolization prior to radiosurgery is not only decreasing the size of the AVM but decreasing the risk of hemorrhage and shortening the latency period by decreasing their flow rate and flow volume.

The Role of Biological Effective Dose in Predicting Obliteration After Stereotactic Radiosurgery of Cerebral Arteriovenous Malformations

2021 ◽  
Vol 96 (5) ◽  
pp. 1157-1164
Author(s):  
Cody L. Nesvick ◽  
Christopher S. Graffeo ◽  
Paul D. Brown ◽  
Michael J. Link ◽  
Scott L. Stafford ◽  
...  
Keyword(s):  
Effective Dose ◽  
Stereotactic Radiosurgery ◽  
Arteriovenous Malformations ◽  
Biological Effective Dose ◽  
Cerebral Arteriovenous Malformations

The Relevance of Anatomic and Hemodynamic Factors to a Classification of Cerebral Arteriovenous Malformations

Neurosurgery ◽  
1991 ◽  
Vol 28 (3) ◽  
pp. 370-379 ◽  
Author(s):  
Alberto Pasqualin ◽  
Giovanni Barone ◽  
Fabrizia Cioffi ◽  
Luisa Rosta ◽  
Renato Scienza ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Flow Velocity ◽  
Transcranial Doppler ◽  
Arteriovenous Malformations ◽  
Drainage System ◽  
Morbidity And Mortality ◽  
Mean Flow ◽  
Cerebral Arteriovenous Malformations ◽  
Permanent Morbidity

Abstract Potential prognostic anatomic and hemodynamic factors were evaluated in 248 patients with cerebral arteriovenous malformations (AVMs), all treated by direct microsurgical removal. The size of each AVM was calculated by its volume, obtained by the multiplication of the three AVM diameters by 0.52. A surgical classification of AVM location (in 11 groups) is proposed. Types of feeders and of drainage were classified as superficial or deep; the extent of the drainage system was classified according to a four-degree scale. The mean flow velocity in the main AVM feeder, detected using transcranial Doppler ultrasonography, was used as an indirect measure of AVM shunt flow in a small number of patients (n = 29). AVM volume was a very important prognostic factor: the incidence of hyperemic complications and the morbidity and mortality rate were significantly higher when the volume of the lesion was >20 cm3 (P< 0.0001 for hyperemic complications; P < 0.001 for permanent morbidity and mortality). The incidence of hyperemic complications and the morbidity rate were higher in AVMs in rolandic, inferior limbic, and insular locations than in AVMs in other locations. As for other anatomic factors: a) the presence of deep feeders significantly increased the incidence of hyperemic complications, as well as the morbidity and mortality rate; b) the presence of deep drainage significantly increased permanent morbidity only; c) the extension of the venous system was significantly related to the development of hyperemic complications, and to morbidity and mortality. Transcranial Doppler examination showed that mean flow velocities >120 cm/s in the main feeder were associated with a significantly higher rate of postoperative hematomas and transient deficits. A classification of cerebral AVMs that takes into account AVM volume and location, the type of feeders, the extent of the drainage system, and the main feeder flow velocity is suggested.

scholarly journals The use of transcranial Doppler sonography in a pediatric neurological clinic

1998 ◽  
Vol XXX (1-2) ◽  
pp. 65-65
Author(s):  
V. I. Guzeva ◽  
А. N. Trubacheva
Keyword(s):  
Transcranial Doppler ◽  
Arteriovenous Malformations ◽  
Doppler Sonography ◽  
High Efficiency ◽  
Transcranial Doppler Sonography ◽  
Cerebral Hemodynamics ◽  
Adult Patients ◽  
Vascular Pathology ◽  
Non Invasive

In the study of cerebral hemodynamics in children, methods that allow multiple non-invasive vascular examination are of great importance. The experience of using one of these methods - transcranial Doppler sonography (TCD) - in adult patients has shown its high efficiency in determining hemodynamically significant organic vascular pathology (occlusions, stenoses, vasospasm, aneurysms, and arteriovenous malformations).

Sign in / Sign up

Export Citation Format

Share Document