Radiomics model based on computed tomography images for prediction of radiation-induced optic neuropathy following radiotherapy of brain and head and neck tumors.

Purpose: We aimed to build a machine learning-based model to predict radiation-induced optic neuropathy in patients who had treated head and neck cancers with radiotherapy.

Materials And Methods: To measure radiation-induced optic neuropathy, the visual evoked potential values were obtained in both case and control groups and compared. Radiomics features were extracted from the area segmented which included the right and left optic nerves and chiasm.

High-dose-rate brachytherapy in treatment of non-melanoma skin cancer of head and neck region: preliminary results of a prospective single institution study.

Purpose: Skin cancers are the most common human malignancy with increasing incidence. Currently, surgery is standard of care treatment for non-melanoma skin cancers. However, brachytherapy is a growing modality in the management of skin cancers.

Morbidity and Mortality Following Short Course Preoperative Radiotherapy in Rectal Carcinoma.

The aim of this study was to evaluate the morbidity and mortality in patients with operable stage II and III rectal cancers within one or two months after surgery, who has been treated pre-operatively with short course radiotherapy. Twenty-eight patients with rectal adenocarcinoma, consecutively referred to the Cancer Institute of Imam Khomeini Hospital from March 2009 to March 2010, were selected for the study after staging by endorectal ultrasound and CT of abdomen, pelvis, and chest; and if they had inclusion criteria for short course schedule, they were treated with radiotherapy alone at 2500 cGy for 5 sessions, and then they were referred to the surgical service for operation one week later. They were visited there by a surgeon unaware of the research who completed a questionnaire about pre-operative, operative, and post-operative complications.