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Radiation schedules in relation to obliteration and complications in hypofractionated conformal stereotactic radiotherapy of arteriovenous malformations
Umeå universitet, Medicinska fakulteten, Institutionen för farmakologi och klinisk neurovetenskap, Neurokirurgi.
Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper.
Umeå universitet, Medicinska fakulteten, Institutionen för strålningsvetenskaper, Radiofysik.
Umeå universitet, Medicinska fakulteten, Institutionen för farmakologi och klinisk neurovetenskap, Neurokirurgi.
2010 (Engelska)Ingår i: Stereotactic and Functional Neurosurgery, ISSN 1011-6125, E-ISSN 1423-0372, Vol. 88, nr 1, s. 24-28Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

AIMS: The purpose of this investigation was to assess the obliteration rate and complications following different radiation schedules of hypofractionated conformal stereotactic radiotherapy for cerebral arteriovenous malformations (AVMs). METHODS: Twenty-five patients were treated with 35 Gy in 5 fractions, whereas 31 patients were treated with 30-32.5 Gy (mean: 31.6 +/- 0.23 Gy) in 5 fractions. A complete angiographic follow-up is available for 40 patients. RESULTS: Thirty-seven out of 40 patients (92.5%) have so far shown obliteration of their AVMs after a mean time of 3.2 +/- 0.26 years (range: 2-8 years). The mean AVM volume in these patients was 8.2 +/- 1.0 cm(3) (range: 1.5-29 cm(3)). There was a higher rate of obliteration (88%) in patients treated with 35 Gy compared to those treated with < 35 Gy (78%), even if this was not statistically significant. There was a significantly shorter time to obliteration in patients treated with 35 Gy. All patients who experienced symptomatic radionecrosis belonged to the group treated with 35 Gy. CONCLUSION: A radiation schedule of 35 Gy in 5 fractions may be more effective than a radiation schedule of <35 (30-32.5) Gy in obliterating AVMs. This may, however, be at the price of an increased risk of symptomatic radionecrosis.

Ort, förlag, år, upplaga, sidor
2010. Vol. 88, nr 1, s. 24-28
Nyckelord [en]
Arteriovenous malformations, stereotactic radiotherapy, fractionation, linear particle accelerator
Identifikatorer
URN: urn:nbn:se:umu:diva-35296DOI: 10.1159/000260076PubMedID: 19940546OAI: oai:DiVA.org:umu-35296DiVA, id: diva2:342927
Tillgänglig från: 2010-08-11 Skapad: 2010-08-11 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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Lindvall, PeterBergström, PerBergenheim, A Tommy

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NeurokirurgiInstitutionen för strålningsvetenskaperRadiofysik
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Stereotactic and Functional Neurosurgery

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