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Year 2019, Volume: 5 Issue: 1, 63 - 72, 26.06.2019
https://doi.org/10.23884/mejs.2019.5.1.07

Abstract

References

  • [1] Yazıcı, G., Cengiz, M., et al.,Stereotaktik Vücut Radyoterapisi, Hacettepe Tıp Dergisi, 42 (2011) ,pp. 74-81
  • [2] Çağıran Kılçıksız, S., Ermiş, E.,et al.,Görüntü Eşliğinde Stereotaktik Radyoterapi, Okmeydanı Tıp Dergisi, 29(2013), pp. 3-9
  • [3] Baş, H., Sterotaktik Radyocerrahi için Küçük alanlarda 6 MV Foton Dozimetrisi, Ankara Üniversitesi, Fen Bilimleri Enstitüsü, Yüksek Lisans Tezi, 2005
  • [4] Kayalılar, N., Cyberknife ve gammaknife tedavilerinde hedef hacim ve normal doku dozlarının karşılaştırılması, Acıbadem Üniversitesi, Sağlık Bilimleri Enstitüsü, Yüksek Lisans Tezi, 2012
  • [5] Feuvret,L., Noel,G., et al.,Conformity Index: A Review, Int J. Radiation Oncology Biol. Phys., 64(2006),2, pp. 333-342
  • [6] Feuvret, L., Noel,G.,et al.,Conformal Index and Radiotherapy, CancerRadiother., 8(2004), pp. 2108-19
  • [7] Das, I., J., Ding, G.,X.,et al., Small fields: Nonequilibrium radiation dosimetry, Medical Physics, 35(2007), 1, pp.206-215
  • [8] http://amos3.aapm.org/abstracts/pdf/77-22581-312436-91466.pdf
  • [9] Hsu, Shih-Ming, Lai, Yuan-Chin,et al.,Dosimetric comparison of different treatment modalities for stereotactic radiotherapy,155(2017), 12, 1-11
  • [10] Jackie Wu, Q-R., Wessels, B.W.,et al., Quality of coverage: Conformity measures for stereotactic radiosurgery, Journal of Applied Clinical Medical Physics, 4(2003),4, pp.374-381.

DOSIMETRIC INVESTIGATION OF RADIOTHERAPY OF SMALL SIZE TUMORS IN RADIOSURGERY DEVICES

Year 2019, Volume: 5 Issue: 1, 63 - 72, 26.06.2019
https://doi.org/10.23884/mejs.2019.5.1.07

Abstract




In stereotactic radiotherapy, high
radiation doses were delivered to tumors using small fields in 1-5 fractions. It
is very important to make sure accuracy of dose and position of given dose in
stereotactic radiotherapy.




 In
this study,  dosimetric measurements of
small sized brain tumors irradiated in CONE- based linear accelator (linac) and
the volumetric arc therapy (VMAT) linac modalities  were performed with EBT3 film. 1,2 and 3 cm
diameter tumors were virtually created in Cyberknife head and neck phantom.
Gafchromic EBT3 film was placed into the phantom to evaluate the accuracy of
the doses given. The phantom was irradiated with Gafchromic EBT3 film according
to treatment plans created in the treatment planning system of two separate
devices for each tumor size. Conformity Index (CI) and Homogeneity Index (HI)
were calculated for the quality of created treatment plans. The dose
distributions calculated in the film and the TPS were compared.




When the CI and HI values were examined,
the CI and HI values of the cone-based linac device were close to 1. The EBT3
measurement results indicate that all SRT treatment modalities achieved accurate
doses. According to results, if a critical organ, such as the brainstem, is
located near the tumor and the situation requires a steep dose gradient, the
cone-based linac should be used for SRT therapy.




This study has shown that on CONE-based
linac or VMAT-based linac devices can be used instead of each other in
small-area irradiations.




References

  • [1] Yazıcı, G., Cengiz, M., et al.,Stereotaktik Vücut Radyoterapisi, Hacettepe Tıp Dergisi, 42 (2011) ,pp. 74-81
  • [2] Çağıran Kılçıksız, S., Ermiş, E.,et al.,Görüntü Eşliğinde Stereotaktik Radyoterapi, Okmeydanı Tıp Dergisi, 29(2013), pp. 3-9
  • [3] Baş, H., Sterotaktik Radyocerrahi için Küçük alanlarda 6 MV Foton Dozimetrisi, Ankara Üniversitesi, Fen Bilimleri Enstitüsü, Yüksek Lisans Tezi, 2005
  • [4] Kayalılar, N., Cyberknife ve gammaknife tedavilerinde hedef hacim ve normal doku dozlarının karşılaştırılması, Acıbadem Üniversitesi, Sağlık Bilimleri Enstitüsü, Yüksek Lisans Tezi, 2012
  • [5] Feuvret,L., Noel,G., et al.,Conformity Index: A Review, Int J. Radiation Oncology Biol. Phys., 64(2006),2, pp. 333-342
  • [6] Feuvret, L., Noel,G.,et al.,Conformal Index and Radiotherapy, CancerRadiother., 8(2004), pp. 2108-19
  • [7] Das, I., J., Ding, G.,X.,et al., Small fields: Nonequilibrium radiation dosimetry, Medical Physics, 35(2007), 1, pp.206-215
  • [8] http://amos3.aapm.org/abstracts/pdf/77-22581-312436-91466.pdf
  • [9] Hsu, Shih-Ming, Lai, Yuan-Chin,et al.,Dosimetric comparison of different treatment modalities for stereotactic radiotherapy,155(2017), 12, 1-11
  • [10] Jackie Wu, Q-R., Wessels, B.W.,et al., Quality of coverage: Conformity measures for stereotactic radiosurgery, Journal of Applied Clinical Medical Physics, 4(2003),4, pp.374-381.
There are 10 citations in total.

Details

Primary Language English
Subjects Metrology, Applied and Industrial Physics
Journal Section Article
Authors

Duygu Tunçman Genç 0000-0002-0929-0441

Eda Mutlu 0000-0002-3972-7309

Murat Okutan 0000-0002-2276-631X

Bayram Demir 0000-0001-6815-6384

Publication Date June 26, 2019
Submission Date April 8, 2019
Acceptance Date May 31, 2019
Published in Issue Year 2019 Volume: 5 Issue: 1

Cite

IEEE D. Tunçman Genç, E. Mutlu, M. Okutan, and B. Demir, “DOSIMETRIC INVESTIGATION OF RADIOTHERAPY OF SMALL SIZE TUMORS IN RADIOSURGERY DEVICES”, MEJS, vol. 5, no. 1, pp. 63–72, 2019, doi: 10.23884/mejs.2019.5.1.07.