Effect of Brachytherapy Source Dwell Position on Dose Distribution in Cervical Cancer Therapy
To investigate the effect of different source dwell positions on dose distribution in the treatment of cervical cancer with brachytherapy. Treatment planning data for cervical cancer patients were used. Treatment plans were created at 1 mm intervals, varying up to 5 mm. For intracavitary brachytherapy and intracavitary and interstitial brachytherapy, the following dose parameters were evaluated: 90% high-risk clinical target volume (HR-CTV D In intracavitary brachytherapy, the HR-CTV D It was shown that a 1 mm change in the source dwell position can affect the dose by up to 2% or more. The accuracy of the source dwell position is very important and should be checked before using the device.