Interfractional Displacement Analysis of the Spinal Cord for 21 Head & Neck Cases in Radiation Therapy Planning
نویسندگان
چکیده
A monomodal slice-based displacement analysis of the spinal cord for three-dimensional computer tomography imaging in radiation therapy planning is presented. In total, 21 head and neck cases with tumor indications close to the spinal cord are studied and evaluated. Two-dimensional cross-correlation is applied to propagate manually segmented contours of the spinal cord from a high-resolution planning CT to subsequently acquired control CTs. The method and the fully automatic implementation turned out to be reliable and robust. A very few manual corrections on the resulting contours remained necessary in single transversal slices.
منابع مشابه
Radiation Induced Demyelination in Cervical Spinal Cord of the Head and Neck Cancer Patients after Receiving Radiotherapy
Background: Cervical spinal cord is important and radiosensitive. It is the most critical organ for the head and neck (H&N;) cancer patients during radiotherapy. If the delivered dose to the cord is more than tolerance dose, demyelination may occur. Objective: Current study aims to analyze the post radiotherapy status of cord in the H&N; cancer patients.Material and Methods: In this a...
متن کاملComparison of three and four-field radiotherapy technique and the effect of laryngeal shield on vocal and spinal cord radiation dose in radiotherapy of non- laryngeal head and neck tumors
Introduction: Due to the effect of radiation on both the tumor and the surrounding normal tissues, the side effects of radiation in normal tissues are expected. One of the important complications in the head and neck radiotherapy is the doses reached to the larynx and spinal cord of patients with non-laryngeal head and neck tumors. Materials and Methods: ...
متن کاملRadiation injury to the spinal cord in head and neck cancers: does field arrangement have a role.
STUDY DESIGN A study of eight cases of head and neck cancers, to see if the cord was getting a higher dose in the antero-posterior (A-P) fields, compared to the bilateral (B/L) fields. OBJECTIVE Radiation damage to the spinal cord is a critical issue for the radiation oncologists. This study was conducted to evaluate, if the dose to the spinal cord is higher by the antero-posterior (A-P) fiel...
متن کاملEvaluation of Tumor Control and Normal Tissue Complication Probability in Head and Neck Cancers with Different Sources of Radiation: A Comparative Study
Introduction: The ultimate goal of radiation treatment planning is to yield a high tumor control probability (TCP) with a low normal tissue complication probability (NTCP). Historically dose volume histogram (DVH) with only volumetric dose distribution was utilized as a popular tool for plan evaluation hence present study aimed to compare the radiobiological effectiveness of the cobalt-60 (Co...
متن کاملPositional changes in parotid glands during head and neck radiation therapy
Introduction: Xerostomia is the most common complication due to radiation–induced damage to salivary glands in head and neck cancer radiotherapy and it reduces quality of life. Parotid glands are main glands which they are account for secretion of stimulated saliva. Studies have demonstrated that mean tolerance parotid’s radiation dose under 26-30 Gy result in an increase in t...
متن کامل