Delineating brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm in head and neck radiotherapy: a CT-based model atlas
| Autor: | Monica Di Tommaso, Domenico Genovesi, Massimo Savastano, Armando Tartaro, Antonietta Augurio, Marianna Trignani, Antonio Raffaele Cotroneo, Annamaria Vinciguerra, F. Perrotti, Angelo Di Pilla, Giampiero Ausili Cefaro, Massimo Caulo |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_treatment
Optic chiasm Pharyngeal muscles Atlases as Topic Imaging Three-Dimensional medicine Humans Brachial Plexus Radiology Nuclear Medicine and imaging Radiation treatment planning Cochlea Neuroradiology medicine.diagnostic_test business.industry Reproducibility of Results Magnetic resonance imaging General Medicine Anatomy Magnetic Resonance Imaging Radiation therapy medicine.anatomical_structure Head and Neck Neoplasms Optic Chiasm Pharyngeal Muscles Tomography X-Ray Computed business Brachial plexus |
| Zdroj: | La radiologia medica. 120:352-360 |
| ISSN: | 1826-6983 0033-8362 |
| DOI: | 10.1007/s11547-014-0448-2 |
| Popis: | Sparing of the organs at risk is one of the primary end-points of radiotherapy. The effects of organ-at-risk delineation on the dosimetric parameters can be critical and can influence treatment planning and outcomes. The aim of our study was to provide anatomical boundaries for the identification and delineation of the following critical organs at risk in the head and neck district: brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm. One patient was initially selected to elaborate our atlas. This patient was subjected to a planning computed tomography of the brain and head and neck district; axial images of 3-mm thickness at 3-mm intervals were obtained. In the same set-up a magnetic resonance imaging study was also performed. The obtained images were fused based on anatomical landmarks and used by a radiation oncologist, supported by a neuroradiologist, to provide anatomo-radiological limits for the identification of the brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm. These limits were further verified on three consecutive patients. A computed tomography-based atlas was developed with definition of cranial, caudal, medial, lateral, anterior and posterior limits for each organ considered. This study allows improvement of definitions of anatomic boundaries for the brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm. Our multidisciplinary experience led to the production of an institutional reference tool that could represent a useful aid for radiation oncologists in clinical practice. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink