Journal of Medical Physics
ORIGINAL ARTICLE
Year
: 2013  |  Volume : 38  |  Issue : 4  |  Page : 178--184

Study of positional dependence of dose to bladder, pelvic wall and rectal points in High-Dose-Rate Brachytherapy in cervical cancer patients


Anil Kumar Talluri1, Krishnam Raju Alluri1, Deleep Kumar Gudipudi1, Shabbir Ahamed1, Madhusudhana M Sresty1, Aparna Yarrama Reddy2 
1 Department of Radiation Oncology, Basavatarakam Indo American Cancer Hospital and Research Institute, Hyderabad, Andhra Pradesh, India
2 Department of Physics, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, Andhra Pradesh, India

Correspondence Address:
Anil Kumar Talluri
Department of Radiation Oncology, Basavatarakam Indo American Cancer Hospital and Research Institute, Road No 14, Banjara Hills, Hyderabad - 500 034, Andhra Pradesh
India

The objective of the study is to examine the variation in doses to, Bladder, pelvic wall and Rectal Points when a patient is simulated in Supine (S Position) and Lithotomy M shaped positions (LM Position), respectively as part of Intracavitary Brachytherapy in Cervical Cancer patients. Patients (n = 19) were simulated and orthogonal images were taken in S Position and LM Positions on a physical simulator. Digital orthogonal X-ray images were transferred to Brachyvision Treatment Planning System via Dicom to generate treatment plans. Radio opaque dye of 7 ml was injected into the Foley bulb for identification and digitization of International Commission on Radiological Units and Measurements (ICRU) Bladder point. Pelvic side wall points were marked in accordance with ICRU 38 recommendations. A Rectal tube containing dummy source marker wire was used to identify Rectal Point. Students«SQ»t-test was used to analyze the results. Doses in LM Position were lower and statistically significant when compared to S Position for ICRU Bladder Point, pelvic walls and Rectal Point. It was observed that movement of applicator could be the reason for the variations in doses between the two positions. Bladder, pelvic wall and rectal points systematically registered lower doses in LM Position as compared to S Position.


How to cite this article:
Talluri AK, Alluri KR, Gudipudi DK, Ahamed S, Sresty MM, Reddy AY. Study of positional dependence of dose to bladder, pelvic wall and rectal points in High-Dose-Rate Brachytherapy in cervical cancer patients.J Med Phys 2013;38:178-184


How to cite this URL:
Talluri AK, Alluri KR, Gudipudi DK, Ahamed S, Sresty MM, Reddy AY. Study of positional dependence of dose to bladder, pelvic wall and rectal points in High-Dose-Rate Brachytherapy in cervical cancer patients. J Med Phys [serial online] 2013 [cited 2021 Oct 19 ];38:178-184
Available from: https://www.jmp.org.in/article.asp?issn=0971-6203;year=2013;volume=38;issue=4;spage=178;epage=184;aulast=Talluri;type=0