Interface software for DOSXYZnrc Monte Carlo dose evaluation on a commercial radiation treatment planning system.
OBJECTIVE
As the conventional graphical user interface (GUI) associated with DOSXYZnrc or BEAMnrc is unable to define specific structures such as gross tumor volume (GTV) on computed tomography (CT) data, the quantitative analysis of doses in the form of dose-volume histograms (DVHs) is difficult. The purpose of this study was to develop an interface that enables us to analyze the results of DOSXYZnrc output with a commercial radiation treatment planning (RTP) system and to investigate the validity of the system.


METHODS
Interface software to visualize three-dimensional radiotherapy Monte Carlo (MC) dose data from DOSXYZnrc on the XiO RTP system was developed. To evaluate the interface, MC doses for a variety of photon energies were calculated using the CT data of a thorax phantom and a uniform phantom as well as data from patients with lung tumors.


RESULTS
The dose files were analyzed on the XiO RTP system in the form of isodose distributions and DVHs. In all cases, the XiO RTP system perfectly displayed the MC doses for quantitative evaluation in the form of differential and integral DVHs.


CONCLUSIONS
Three-dimensional display of DOSXYZnrc doses on a dedicated RTP system could provide all the existing facilities of the system for quantitative dose analysis.
Kunieda
Etsuo
E
Department of Radiology, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan. kunieda-mi@umin.ac.jp
Deloar
Hossain M
HM
Takagi
Shunji
S
Sato
Koichi
K
Kawase
Takatsugu
T
Saitoh
Hidetoshi
H
Saito
Kimiaki
K
Sato
Osamu
O
Sorell
Graham
G
Kubo
Atsushi
A
D006801:Humans; D008175:Lung Neoplasms / Q000532:radiotherapy; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D012984:Software