Prediction of Obliteration of Arteriovenous Malformations after Radiosurgery: the Obliteration Prediction Index
نویسندگان
چکیده
منابع مشابه
Prediction of obliteration of arteriovenous malformations after radiosurgery: the obliteration prediction index.
OBJECTIVE To describe the response to single dose photon stereotactic radiosurgery of arteriovenous malformations (AVMs) so that the probability of success or failure of treatment may be predicted for the individual patient. METHOD The obliteration prediction index (OPI) was calculated for AVMs by dividing the marginal dose of radiation in Gray (Gy) by the lesion diameter in centimetres in co...
متن کاملArteriovenous malformations after Leksell gamma knife radiosurgery: rate of obliteration and complications.
OBJECTIVE Although relevant information exists regarding the chance of obliterating arteriovenous malformations (AVMs) using radiosurgery, the overall chance of cure after gamma knife radiosurgery is usually only extrapolated from a portion of all monitored patients. This chance and the risks involved in radiosurgery, including repeat treatment when necessary in a defined population of treated ...
متن کاملThe predictive value of 3D time-of-flight MR angiography in assessment of brain arteriovenous malformation obliteration after radiosurgery.
BACKGROUND AND PURPOSE The purpose of radiosurgery of bAVMs is complete angiographic obliteration of its nidus. We assessed the diagnostic accuracy of 1.5T T2-weighted MR imaging and TOF-MRA images for detecting nidus obliteration after radiosurgery. MATERIALS AND METHODS The pre- and postradiosurgery MR images and DSA images from 120 patients who were radiosurgically treated for a bAVM were ...
متن کاملUsefulness of repetitive intraoperative indocyanine green-based videoangiography to confirm complete obliteration of micro-arteriovenous malformations
BACKGROUND It is difficult to intraoperatively confirm the total disappearance of arteriovenous (AV) shunts during surgery for microarteriovenous malformations (micro-AVMs), especially when the nidus is extremely small or diffuse on preoperative angiography. Although intraoperative angiography is effective for evaluating residual shunts, procedure-related risks raise important concerns. The pur...
متن کاملSpontaneous obliteration of pial arteriovenous malformations: a review of 27 cases.
BACKGROUND AND PURPOSE Brain arteriovenous malformations (AVMs) occur in approximately 0.14% of the population. The most common presentations are hemorrhage (50%) and seizures (25%). Although they are congenital abnormalities, their angioarchitecture may vary over time. A rare but well-recognized phenomenon of AVMs is that of spontaneous obliteration. It is not known what factors predispose to ...
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ژورنال
عنوان ژورنال: Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques
سال: 1997
ISSN: 0317-1671,2057-0155
DOI: 10.1017/s0317167100021417