Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19330
Title: Target dose conformity in 3-dimensional conformal radiotherapy and intensity modulated radiotherapy
Authors: Wu, VWC 
Kwong, DLW
Sham, JST
Keywords: 3-D conformal radiotherapy
Conformity index
Intensity modulated radiotherapy
Issue Date: 2004
Publisher: Elsevier Sci Ireland Ltd
Source: Radiotherapy and oncology, 2004, v. 71, no. 2, p. 201-206 How to cite?
Journal: Radiotherapy and Oncology 
Abstract: Background and purpose Dose conformity to the planning target volume is an important criterion in radiotherapy treatment planning, for which the conformity index is a useful assessment tool. The purpose of this study is to compare the differences in CI for the treatment planning of four cancers including the nasopharynx, oesophagus, lung and prostate. Patients and methods Seventy patients with cancers of nasopharynx (30), oesophagus (15), lung (15) and prostate (10) were recruited. Each of these patients was planned with three sets of treatment plans using the FOCUS treatment planning system: the forward and inverse 3DCRT plans and the IMRT plan. The CI was generated for each treatment plan. The mean CI from each cancer patient group was calculated and compared with the other three cancer groups. The mean value of CI was also compared among the three planning methods. Results The oesophageal and lung cancers demonstrated relatively higher overall mean CI values (0.64 and 0.62, respectively), whereas that of the nasopharynx and prostate were lower (0.54 and 0.50, respectively). With regards to the planning method groups, the IMRT plans produced the highest overall mean CI (0.62), while those for the forward and inverse 3DCRT were similar (0.57 and 0.55, respectively). Conclusion For the four selected cancers, oesophageal and lung cancers were easier to conform than the nasopharyngeal and prostate cancers. The IMRT plans were more effective in achieving better dose conformity than that of the 3DCRT.
URI: http://hdl.handle.net/10397/19330
ISSN: 0167-8140
DOI: 10.1016/j.radonc.2004.03.004
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

70
Last Week
0
Last month
0
Citations as of Aug 12, 2017

WEB OF SCIENCETM
Citations

60
Last Week
0
Last month
0
Citations as of Aug 4, 2017

Page view(s)

51
Last Week
1
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



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