Journal Article10.1118/1.597345
Generation of arbitrary intensity profiles by dynamic jaws or multileaf collimators.
Spiridon V. Spirou,Chen S. Chui +1 more
TL;DR: An algorithm, which calculates the motions of the collimator jaws required to generate a given arbitrary intensity profile, is presented, which is equally applicable for multileaf collimators (MLC), where the transmission through thecollimator leaves is taken into account.
read more
Abstract: An algorithm, which calculates the motions of the collimator jaws required to generate a given arbitrary intensity profile, is presented. The intensity profile is assumed to be piecewise linear, i.e., to consist of segments of straight lines. The jaws move unidirectionally and continuously with variable speed during radiation delivery. During each segment, at least one of the jaws is set to move at the maximum permissible speed. The algorithm is equally applicable for multileaf collimators (MLC), where the transmission through the collimator leaves is taken into account. Examples are presented for different intensity profiles with varying degrees of complexity. Typically, the calculation takes less than 10 ms on a VAX 8550 computer.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Geometric dose prediction model for hemithoracic intensity-modulated radiation therapy in mesothelioma patients with two intact lungs
L Kuo,Ellen Yorke,Vishruta A. Dumane,A. Foster,Zhigang Zhang,James Mechalakos,Abraham J. Wu,Kenneth E. Rosenzweig,Andreas Rimner +8 more
TL;DR: In this paper, the authors developed an anatomy-based model to predict attainable prescription dose before starting optimization for hemithoracic pleural intensity-modulated radiation therapy (IMRT) in patients with malignant pleural mesothelioma (MPM) who underwent pleurectomy/decortications or have unresectable disease.
9
Technological Advances in Radiation Therapy for Prostate Cancer
Mehee Choi,Arthur Y. Hung +1 more
TL;DR: This review summarizes the recent technical advances made in radiation dose delivery, including target volume definition, treatment planning, treatment delivery methods, and positional verification methods during RT.
9
•Dissertation
Comparative treatment planning in radiotherapy and clinical impact of proton relative biological effectiveness.
Jonas Johansson
- 01 Jan 2006
TL;DR: In conclusion, the results obtained here still indicate a significant difference in introducing a variable RBE compared to applying a generic RBE of 1.1, suggesting it is worth considering such a correction in clinical proton therapy planning, especially when risk organs are located immediately behind the target volume.
Dosimetric verification in intensity modulated radiation therapy
Yuichiro Narita,Kazuo Hatano,Takayuki Shimizu,Hideki Shimizu,Tsutomu Iwase,Kimio Utagawa,Hideyo Ishigaki,Yukio Okazaki +7 more
TL;DR: In this study, the verification of dose distribution for IMRT using portal film and a RANDO phantom could be performed with an error of less than 2% in all cases and the measurement error for the central dose using a JARP-type ionization chamber and MixDP was less than 3% inall cases except for the case with the maximum error.
8
A 4-bank multileaf collimator provides a decomposition advantage for delivering intensity-modulated beams by step-and-shoot
TL;DR: It is shown that the use of an MLC that has four banks of leaves (in two orthogonal pairs) instead of two banks only is advantageous for this purpose of intensity-modulated radiation therapy.
8