In:
Medical Physics, Wiley, Vol. 28, No. 9 ( 2001-09), p. 1842-1849
Abstract:
For stereotactic radiosurgery using the Leksell Gamma Knife system, it is important to perform a pre‐treatment verification of the maximum dose calculated with the Leksell stereotactic radiosurgery system. This verification can be incorporated as part of a routine quality assurance (QA) procedure to minimize the chance of a hazardous overdose. To implement this procedure, a formalism has been developed to calculate the dose using the following parameters: average target depth coordinates of the maximum dose location or any other dose point(s) to be verified, 3‐dimensional (3‐dim) beam profiles or off‐center‐ratios (OCR) of the four helmets, helmet size i , output factor plug factor each shot j coordinates and shot treatment time The average depth of the target was obtained either from MRI/CT images or ruler measurements of the Gamma Knife Bubble Head Frame. and were then compared to evaluate the accuracy of this independent calculation. The proposed calculation for an independent check of has been demonstrated to be accurate and reliable, and thus serves as a QA tool for Gamma Knife stereotactic radiosurgery.
Type of Medium:
Online Resource
ISSN:
0094-2405
,
2473-4209
Language:
English
Publisher:
Wiley
Publication Date:
2001
detail.hit.zdb_id:
1466421-5
