Comparison of Helical TomoTherapy with Linear Accelerator Base Intensity-modulated Radiotherapy for Head & Neck Cases / 의학물리
Korean Journal of Medical Physics
;
: 89-94, 2008.
Article
in Korean
| WPRIM
| ID: wpr-7202
ABSTRACT
TomoTherapy has a merit to treat cancer with Intensity modulated radiation and combines precise 3-D imaging from computerized tomography (CT scanning) with highly targeted radiation beams and rotating beamlets. In this paper, we comparing the dose distribution between TomoTherapy and linear accelerator based intensity modulated radiotherapy (IMRT) for 10 Head & Neck patients using TomoTherapy which is newly installed and operated at National Cancer Center since Sept. 2006. Furthermore, we estimate how the homogeneity and Normal Tissue Complication Probability (NTCP) are changed by motion of target. Inverse planning was carried out using CadPlan planning system (CadPlan R.6.4.7, Varian Medical System Inc. 3100 Hansen Way, Palo Alto, CA 94304-1129, USA). For each patient, an inverse IMRT plan was also made using TomoTherapy Hi-Art System (Hi-Art2_2_4 2.2.4.15, TomoTherapy Incorporated, 1240 Deming Way, Madson, WI 53717-1954, USA) and using the same targets and optimization goals. All TomoTherapy plans compared favorably with the IMRT plans regarding sparing of the organs at risk and keeping an equivalent target dose homogeneity. Our results suggest that TomoTherapy is able to reduce the normal tissue complication probability (NTCP) further, keeping a similar target dose homogeneity.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Particle Accelerators
/
Imaging, Three-Dimensional
/
Radiotherapy, Intensity-Modulated
/
Organs at Risk
/
Head
/
Neck
Type of study:
Etiology study
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Medical Physics
Year:
2008
Type:
Article
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