Brachytherapy Treatment.pdf - An Experience on the dosimetry of HDR Brachytherapy Treatment Planning of Cervical Carcinoma at BPKM Cancer Hospital Nepal

Brachytherapy Treatment.pdf - An Experience on the...

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An Experience on the dosimetry of HDR Brachytherapy Treatment Planning of Cervical Carcinoma at BPKM Cancer Hospital, Nepal Surendra B. Chand, PP Chaurasia, MP Adhikary, AK Jha Radiation Oncology Department, BPKM Cancer Hospital,Bharatpur, Nepal Abstract To identify the status of Brachytherapy planning by evaluating the bladder and rectum dose of cervical carci- noma patients those undergone HDR brachytherapy for six years. Fifteen hundreds and ten patients, from 2006 to 2010, were taken for this study. In total four thousands five hundred and thirty treatment plans were done to complete all patients’ treatment. The Fletcher Suit Delclos FSD types of applicators, orthogonal radiographs were used for dosimetry. Radio opaque dye and rectal probe is used to identify bladder and rectum location respectively. patients completed all three cycle of treatments. Maximum patients, 1055 (69.87%), have re- ceived bladder dose less than 4 gray per fraction. Less than five percent patients have received bladder dose more than 71 % of prescribed dose per fraction. Similarly; In case of rectum dose, total 1324 (87.68%) pts has received rectal dose less than 57 % per cycle. 1324 (87.68%) pts have received dose less than four gray per fraction. Maximum patients were treated with bladder and rectal dose less than 60 Percentages of point A dose with satisfactory pear shape. Normal organ dose should minimise, however, it should not produce a significant reduc- tion in disease control. Keywords HDR Brachytherapy, Remote after loading, cervical carcinoma patients. I. I NTRODUCTION Brachytherapy is a method of treatment in which sealed radioactive sources are used to deliver radiation at a short distance by interstitial, intracavitary, or surface application. With this mode of therapy a high radiation dose can be delivered locally to the tumor with rapid fall-off in the sur- rounding normal tissue. The history of Brachytherapy began in Paris in 1897.Shortly after Marie and Pierre Curie dis- covered radium in 1898, brachytherapy was first performed successfully to treat facial skin cancer 1 . This was done by directly applying a radioactive material such as radium, radon to the affected site. Within five years, radioactive sources were being used internally via an applicator inserted into the body. Since the technology is gradually progress- ing, the after loading methods were developed during 1959 and 1960 which offered protection from the radiation hazard to radiation workers performing Brachytherapy and there
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