Dosimetric Evaluation of The Tomotherapy, Non-coplanar and Coplanar IMRT Plannings for Total Scalp Irradiation

Medicine Science

Bahar Dirican¹  Simay Gurocak²  Eda Kaya Pepele²  Esil Kara³  Asli Yazici³  Songul Barlaz Us⁴ 

[1] Gulhane Military Hospital, Department of Radiation Oncology, Ankara, Turkey;Inonu University, Faculty of Medicine, Department of Radiation Oncology, Malatya, Turkey;ONKO Ankara Oncology Center, Ankara, Turkey;Mersin University Faculty of Medicine, Department of Radiation Oncology, Mersin, Turkey;

关键词: IMRT;    tomotherapy;    coplanar;    noncoplanar;    OaR;   

DOI  :  10.5455/medscience.2014.03.8218

来源: DOAJ

【 摘 要 】

In this study, the dosimetric effects of the Tomotherapy, noncoplanar and coplanar IMRT plannings were evaluated for the total scalp irradiation. Tomotherapy based and linac based IMRT plans were compared for 61 years old female patient with multipl myeloma. Two different linac based IMRT plans which are coplanar and noncoplanar were performed for total scalp irradiation. 20 Gy was given to the PTV volume. Firstly, homogeneity index and conformity index values were calculated for PTV. Secondly, the doses of organ at risk (OaR) which are lenses, brain, brainstem and parotid glands were dosimetrically evaluated. While, tomotherapy plan was more homogenous, noncoplanar plan was more conformal than the others. Our study figure out that the OaR doses can be decreased by using tomotherapy based IMRT. However, the treatment time was increased when the tomotherapy based IMRT used for treatment. Tomotherapy based IMRT can be used for total scalp irradiation with respect to OaR. [Med-Science 2015; 4(2.000): 2155-64]

【 授权许可】

Unknown