IMRT versus 3D-CRT for thyroid cancer

Open access

IMRT versus 3D-CRT for thyroid cancer

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.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • 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.

  • 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.

  • 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.

Journal information
Impact Factor

CiteScore 2018: 0.38

ICV 2017 = 103.49

SCImago Journal Rank (SJR) 2018: 0.132
Source Normalized Impact per Paper (SNIP) 2018: 0.303

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 139 67 7
PDF Downloads 81 51 7