No abstract available.
Intracranial Arteriovenous Malformations* ; Microsurgery*

No abstract available.
Intracranial Arteriovenous Malformations* ; Radiosurgery*

No abstract available.
Intracranial Arteriovenous Malformations* ; Radiosurgery*

The hemodynamic aspects of cerebral arteriovenous malformations(AVM) are currently the subject of increasing interest. Recently developed methods such as Doppler sonography, Xenon-enhanced Computed tomography Cerebral blood flow(CT CBF), single photon emission computed tomography(SPECT), and position emission tomography(PET) have promoted a more dynamic diagnostic and therapeutic approach to the complicated problem related to surgery of AVM. In this article, the literatures concerning the hemodynamics of cerebral AVM were reviewed.
Arteriovenous Malformations ; Hemodynamics* ; Intracranial Arteriovenous Malformations*

Endovascular embolization is being increasingly used to treat intracranial arteriovenous malformations (AVMs). However, we experienced two patients with retained microcatheters after AVM embolization using Onyx.
Arteriovenous Malformations ; Humans ; Intracranial Arteriovenous Malformations

This association had been reported for long time with a frequency of 2.7-23% of cases of intracerebral arteriovenous connection. This association increases the risk of cerebral meningo hemorrhage. 3 cases of cerebral meningo hemorrhage associated with intracerebral arteriovenous connective malformation were studied retrospectively and treated at Viet Duc Hospital from January 1999 to January 2004. The presence of aneurysm in cerebral arteriovenous connection was an important predictive factor for the hemorrhage possibility, leading to cerebral hemorrhage
Aneurysm ; Arteriovenous Malformations ; Intracranial Arteriovenous Malformations ; abnormalities

OBJECTIVES: The goal of surgical management of cerebral arteriovenous malformations (AVMs) is elimination of the lesions without development of new neurological deficits. To improve the surgical management of results of cerebral AVMs in the future, this article discusses about surgical complications of the AVMs and their preventive methods. METHODS: We investigate the methods to avoid the surgical complications of the AVMs based on the our experiences and review of literatures. RESULTS: Accurate anatomical knowledge about location of AVMs, proper reduction of nidus size by preoperative embolization, accurate dissection of peripheral margin of AVMs during surgery, and understanding and proper management of peculiar pathophysiological events of AVMs which occur during surgery and postoperative period are the key points for avoiding surgical complications of the AVMs. CONCLUSION: We conclude that refined skill for endovascular and microsurgical techniques are required to successful surgical treatment of cerebral AVMs.
Arteriovenous Malformations* ; Intracranial Arteriovenous Malformations ; Postoperative Period

Stereotactic radiosurgery has become excellent alternative treatment for cerebral arteriovenous malformations (AVM). This technique has expanded to treatment of larger AVM which is not amenable to surgical management. However, its variable adverse effects should be also taken into considerations sincerely because of radiobiological characteristics such as delayed onset and progressive neurological deteriorations. Herein, we report a case in which progressively expanding hemorrhagic cyst with repeated bleedings so called chronic encapsulated expanding hematoma was developed on several years after radiosurgery treatment. Neurological and radiological findings were improved by surgical removal.
Arteriovenous Malformations ; Hematoma ; Intracranial Arteriovenous Malformations ; Radiosurgery

The study carries on 35 patients with intracranial arteriovenous malformation (MAV) diagnosed at faculty of neurology of Bach Mai hospital. These patients were treated by method embolization in intravascular. The injury only MVA found usually on young with 80% < 40 years old, and on man more than woman. The injury MVA of supratentorial is 91.43%, local function is 82.86%, fed by peduncle of arteria is 74.29%, reflux vein of superficial corter vein is 57.15%, return sinus vein doc tren or through vein deep purely or combined is 42.85%. The result of embolization at first step at level good is 77.4%, medial 17.14%, and dealth is 5.72%. This is independent treatment method and can also supported for surgery and surgery X ray locative
Intracranial Arteriovenous Malformations ; Brain ; Embolism

In 10 cases with intracranial arterivenous malformation (AVMs) diagnosed by MR spin echo images, MR angiography was evaluated and compared with conventional angiography in regard to depiction of nidus, arterial feeders, and draining veins. Spin echo images demonstrated the nidus of the AVM in all cases, but displayed the feeding vassels inadequately. These vessels were directly visualized with 3 dimensional STAGE(small tip angle gradient echo) MR angiography using rephasing/dephasing pulse sequences. In 5 cases MR angiography and conventional angiography showed the same results. However, in the others, MR angiography showed lower resolution than conventional angiography. MR angiography is useful in preangiographic evaluation of intracranial AVM but improvement in image resolution, which is dependent on MR hard ware and pulse sequence, is still to be desired.
Angiography* ; Intracranial Arteriovenous Malformations* ; Veins