Q.All are true regarding treatment of AVMs except
a. untreated case shows grim prognosis
b. the goal of management is complete obliteration of the nidus for cure
c. the nidus less than 3.5 cm suitable for radiosurgery
d. the effect of radiosurgery takes months to years
e. Endovascular treatment is usually primary treatment
ANS.---e
Endovascular treatment is usually an adjunctive measure to either surgery or radiation
Radiosurgery or stereotactic external beam radiation therapy uses focused irradiation directed at the AVM nidus. Radiosurgery is usually pursued in those cases considered unsuitable for resection because of either location of the AVM nidus or overall operative risk.
The efficiency of AVM obliteration is low when the AVM nidus exceeds 3.0 cm when treated with (radiation (“gamma knife”) or x-ray photon radiation (“LINAC radiosurgery”). Large AVMs greater than 3.0 cm may benefit from stereotactic heavy-charged-particle Bragg-peak radiation.
A linear accelerator (LINAC) customizes high energy x-rays to conform to a tumor’s shape and destroy cancer cells while sparing surrounding normal tissue
a. untreated case shows grim prognosis
b. the goal of management is complete obliteration of the nidus for cure
c. the nidus less than 3.5 cm suitable for radiosurgery
d. the effect of radiosurgery takes months to years
e. Endovascular treatment is usually primary treatment
ANS.---e
Endovascular treatment is usually an adjunctive measure to either surgery or radiation
Radiosurgery or stereotactic external beam radiation therapy uses focused irradiation directed at the AVM nidus. Radiosurgery is usually pursued in those cases considered unsuitable for resection because of either location of the AVM nidus or overall operative risk.
The efficiency of AVM obliteration is low when the AVM nidus exceeds 3.0 cm when treated with (radiation (“gamma knife”) or x-ray photon radiation (“LINAC radiosurgery”). Large AVMs greater than 3.0 cm may benefit from stereotactic heavy-charged-particle Bragg-peak radiation.
A linear accelerator (LINAC) customizes high energy x-rays to conform to a tumor’s shape and destroy cancer cells while sparing surrounding normal tissue
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