| dc.description.abstract | Gynaecological cancers are fourth commonest cancer in world among women.
Brachytherapy is a major treatment option for gynaecological cancers. When
Brachytherapy source is implanted in cervical cavity of the patient, there is a high
risk of irradiating bladder and rectum since these critical organs are in close
proximity to the sources. The main aim of this study was to analyse the radiation
doses by evaluating point doses, rectum dose and bladder dose in a cervical
brachytherapy treatment. This study was conducted at high dose rate
brachytherapy unit, Apeksha Hospital, Maharagama. 70 cervical cancer patients
those who received 21 Gy in 3 fractions were selected for this study and among them
50 and 20 were point A and point M types of treatment respectively. Maximum
applicator distance, total dwell time, average bladder and rectum doses, and doses
to the point M, A and B were measured from the treatment planning system of HDR
brachytherapy. The correlation is significant in between total dwell time and the
average bladder and rectum doses in intracavitary treatments in HDR
brachytherapy of cervix cancers. The correlation is not significant in between
maximum applicator distance and the average bladder and rectum doses both in
point A and M types. Total bladder dose of point A patients was statistically
significantly greater than the point M patients. Total rectum dose of point M patients
was statistically significantly greater than the point A patients. | en_US |
