PURPOSE To investigate the impact of clinical target volume (CTV) shape and size on CTV to planning target volume (PTV) margin expansion. METHODS AND MATERIALS Using numerical integration methods, margins accounting for random errors and systematic errors were calculated for CTVs of different shapes and sizes. We use k(r-95) and k(s-95) to represent the coefficients, for random errors and sys...

Background: For the purpose of individual clinical target volume assessment in radiotherapy of prostate cancer, MRSI was used as a molecular imaging modality with MRI and CT images. Materials and Methods: The images of 20 prostate cancer patients were used in this study. The MR and MRSI images were registered with CT ones using non-rigid registration technique. The CT based planning (BP), CT/MR...

The current study investigated the effects of oral code-mixing and glossing on L2 vocabulary learning. To this end, 60 EFL learners studying at pre-university school were given a pre-test to make sure that they did not have any prior knowledge of the target words. Based on their scores in the pre-test, 36 pre-university students were selected and divided into three groups, including two experim...