Inter-application displacement of brachytherapy dose received by the bladder and rectum of the patients with inoperable cervical cancer.

Background: The aim of the study was to examine on the CT basis the inter-application displacement of the positions D0.1cc, D1cc and D2cc of the brachytherapy dose applied to the bladder and rectum of the patients with inoperable cervical cancer.

Patients And Methods: This prospective study included 30 patients with cervical cancer who were treated by concomitant chemo-radiotherapy.

[Selection of the optimal radiotherapy technique for locally advanced maxillary carcinoma using a three-dimensional treatment planning system].

Aim: To compare the isodose distribution of three radiotherapy techniques for locally advanced maxillary sinus carcinoma and analyze the potential of three-dimensional (3D) conformal radiotherapy planning in order to determine the optimal technique for target dose delivery, and spare uninvolved healthy tissue structures.

Methods: Computed tomography (CT) scans of fourteen patients with T3-T4, N0, M0 maxillary sinus carcinoma were acquired and transferred to 3D treatment planning system (3D-TPS). The target volume and uninvolved dose limiting structures were contoured on axial CT slices throughout the volume of interest combining three variants of treatment plans (techniques) for each patient: 1.