Evaluation of Optimal Post-Injection Timing of Hypoxic Imaging with F-Fluoromisonidazole-PET/CT.

Purpose: Positron emission tomography (PET)/computed tomography (CT) using F-fluoromisonidazole (FMISO) has been used as an imaging tool for tumour hypoxia. However, it remains unclear whether they are useful when scanning is performed earlier, e.g.

Radiotherapy planning techniques to reduce lung irradiation in head and neck cancer patients with mediastinal involvement.

The number of patients with head and neck squamous cell carcinoma (HNC) with mediastinal involvement is small, and appropriate treatment techniques have not been widely discussed. This study aimed to compare the efficacy of radiotherapy planning techniques in reducing lung irradiation while retaining target coverage. Among all HNC patients with mediastinal involvement who underwent radiotherapy between 2007 and 2014 at our hospital, seven consecutive patients were included in this study.

A scoring system predicting acute radiation dermatitis in patients with head and neck cancer treated with intensity-modulated radiotherapy.

Background And Purpose: We created a scoring system incorporating dosimetric and clinical factors to assess the risk of severe, acute skin reactions in patients undergoing intensity-modulated radiation therapy (IMRT) to treat head and neck cancer (HNC).

Materials And Methods: A total of 101 consecutive patients who received definitive IMRT or volumetric modulated arc therapy (VMAT) with a prescription dose of 70 Gy to treat HNC between 2013 and 2017 in our hospital were enrolled. Skin V, V, V, V V, V, and V values delivered 5 mm within the body contour were compared between patients with Grades 1-2 and Grade 3 dermatitis.