IMRT versus 3D-CRT for thyroid cancer

• Authors: Marta Gizynska , Anna Zawadzka
• Languages of publication: EN

Abstracts

EN

A 3D-CRT involving a 4-field (5-field, 6-field, etc.) technique (photon and electron beams) and an alternative IMRT 7-field technique with 6 MV photon fields for thyroid cancer were compared. The IMRT allows reduction in the dose to the spinal cord of about 12 Gy and permits better coverage of the target volume with smaller standard deviation (average 4.65% for 3D-CRT as compared with 1.81% for IMRT). The time needed to prepare therapy (TPS, dosimetry, preparing boluses and electron aperture) and the session time are about the same for both techniques.

Keywords

EN

thyroid; IMRT; 3D-CRT; Target Conformity Index; comparison of treatment plans

• Publisher: Versita
• Journal: Polish Journal of Medical Physics And Engineering
• Year: 2008
• Volume: 14
• Issue: 3
• Pages: 151-162

Dates

published

1 - 1 - 2008

online

14 - 4 - 2009

Contributors

author

Marta Gizynska

• Department of Medical Physics, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgena 5, 02-781 Warsaw, Poland

author

Anna Zawadzka

• Department of Medical Physics, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgena 5, 02-781 Warsaw, Poland

References

• Karczmarzyk R, Dabrowski R. [Rules of defining dose in irradiated volume in thyroid cancer external photon and electron beams radiotherapy]. Nowotwory J Oncol. 1994; 44: 349-355. Polish.
• Miften MM, Das SK, Su M, Marks LB. A dose-volume-based tool for evaluating and ranking IMRT treatment plans. J Appl Clin Med Phys. 2004; 5(4): 1-14.[Crossref][PubMed]
• Knoos T, Kristensen I, Nilsson P. Volumetric and dosimetric evaluation of radiation treatment plans: Radiation conformity index. Int J Radiat Oncol Biol Phys. 1998; 42(5): 1169-1176.[PubMed][Crossref]
• Gizynska MK, Chelminski K, Zawadzka A, Bulski W. A Tool for Comparing Dose Distribution in 3D and IMRT Plans. Pol J of Environ Stud. 2006; 15(4A): 174-176.

Identifiers

DOI

10.2478/v10013-008-0013-1