IMMEDIATE RESULTS OF CONFORMIC HDR BRACHYTHERAPY USING THE MULTISOURCE APPARATUS FOR ORAL MUCOSAL TUMORS

In February to August 2011, the Chelyabinsk District Clinical Oncology Dispensary performed combined radiotherapy using conformic HDR brachytherapy (BT) with daily dose fractionaton on a Multisource apparatus in 10 patients with squamous cell carcinoma of the oral mucosa. An algorithm for planning conformic BT was developed, by combining the data of multislice spiral computed tomography and magnetic resonance imaging, by using the inverse procedures for dose calculation, and by choosing the parameters of plan assessment. No complications or severe toxic reactions were noted. The immediate results of the treatment were studied. A complete effect was obtained in 4 patients with Stages I−II. There was process stabilization in 2 patients and continued tumor growth in 1 case. Recurrent tumor was diagnosed in 2 cases following 3 and 9 months. The enhanced efficiency of BT was associated with the increased accuracy of tumor imaging.

brachytherapy, head and neck tumors, HDR, conformic radiotherapy, inverse planning

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