폐암의 세기조절방사선치료에서 PBC 알고리즘과 AAA 알고리즘의 비교연구

Title
폐암의 세기조절방사선치료에서 PBC 알고리즘과 AAA 알고리즘의 비교연구
Other Titles
Comparison of Intensity Modulated Radiation Therapy Dose Calculations with a PBC and AAA Algorithms in the Lung Cancer
Author(s)
김성규강민규예지원오세안[오세안]김성훈 [김성훈 ]김기환[김기환]
Keywords
Anisotropic analytical algorithms (AAA); Pencil beam convolution (PBC); Lung cancer; Intensity modulated radiation therapy (IMRT); AAA 알고리즘(anisotropic analytical algorithms); PBC 알고리즘(pencil beam convolution); Lung cancer; 세기조절방사선치료(intensity modulated radio therapy)
Issue Date
201203
Publisher
한국의학물리학회
Citation
의학물리, v.23, no.1, pp.48 - 53
Abstract
The pencil beam convolution (PBC) algorithms in radiation treatment planning system have been widely used to calculate the radiation dose. A new photon dose calculation algorithm, referred to as the anisotropic analytical algorithm (AAA), was released for use by the Varian medical system. The aim of this paper was to investigate the difference in dose calculation between the AAA and PBC algorithm using the intensity modulated radiation therapy (IMRT) plan for lung cancer cases that were inhomogeneous in the low density. We quantitatively analyzed the differences in dose using the eclipse planning system (Varian Medical System, Palo Alto, CA) and I’mRT matirxx (IBA, Schwarzenbruck, Germany) equipment to compare the gamma evaluation. 11 patients with lung cancer at various sites were used in this study. We also used the TLD-100 (LiF) to measure the differences in dose between the calculated dose and measured dose in the Alderson Rando phantom. The maximum, mean,minimum dose for the normal tissue did not change significantly. But the volume of the PTV covered by the 95% isodose curve was decreased by 6% in the lung due to the difference in the algorithms. The difference dose between the calculated dose by the PBC algorithms and AAA algorithms and the measured dose with TLD-100 (LiF) in the Alderson Rando phantom was −4.6% and −2.7% respectively. Based on the results of this study, the treatment plan calculated using the AAA algorithms is more accurate in lung sites with a low density when compared to the treatment plan calculated using the PBC algorithms.
URI
http://hdl.handle.net/YU.REPOSITORY/29463
ISSN
1226-5829
Appears in Collections:
의과대학 > 방사선종양학교실 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE