Dosimetric Verification for Primary Focal Hypermetabolism of Nasopharyngeal Carcinoma Patients Treated with Dynamic Intensity-modulated Radiation Therapy

• DOI: 10.7314/apjcp.2012.13.3.985
• Publication Date: 2012-07-20T17:26:47Z
• Authors: Yong Xin; Jia-Yang Wang; Liang Li; Tian-You Tang; Gui-Hong Liu; Jian-She Wang; Yu-Mei Xu; Yong Chen; Long-Zhen Zhang
• Keywords: Nasopharyngeal Carcinoma; Phantoms, Imaging; Radiotherapy Planning, Computer-Assisted; Carcinoma; Nasopharyngeal Neoplasms; Radiotherapy Dosage; Multimodal Imaging; 3. Good health; 03 medical and health sciences; 0302 clinical medicine; Positron-Emission Tomography; Humans; Radiotherapy, Intensity-Modulated; Tomography, X-Ray Computed; Head; Neck

To make sure the feasibility with (18F)FDG PET/CT to guided dynamic intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma patients, by dosimetric verification before treatment.Chose 11 patients in III~IVA treated functional image-guided IMRT and absolute relative Varian 23EX LA, ionization chamber, 2DICA of I'mRT Matrixx IBA detachable phantom. Drawing outline making treatment plan were different imaging techniques (CT PET/CT). The dose distributions various regional realized SMART.The mean errors interest area 2.39%±0.66 using 0.6 cc ice chamber. Results DTA method, average measurements within our protocol (3%, 3 mm) 87.64% at 300 MU/min all filed.Dosimetric is obligatory necessary. Ionization chamber was effective tool primary focal hyper metabolism carcinoma. Our preliminary evidence indicates that feasible.