Image fusion and hippocampus protection in radiotherapy treatment of brain metastases
Keywords:
Tomography, X-ray computed, Magnetic resonance imaging, Image superimposition, Radiosurgery, Brain metastases, HippocampusAbstract
CT simulation images are the current standard in external beam radiotherapy planning systems. However, the limitations of images obtained from CT scanning include their low contrast and low specificity in the identification and characterization of tumor lesions and some central nervous system structures. The new algorithms implemented in radiotherapy planning systems allow image fusion to be performed using MRI images and CT simulation images. It also allows structures like the hippocampus to be defined and protected, by administering lower doses to this area and higher doses to the tumor volume, thus decreasing side effects arising from whole brain radiotherapy treatment. Images corresponding to this treatment technique are presented in this article.
Author Biographies
Elizabeth Alwers, Centro de Control de Cáncer Ltda
Centro de Control de Cáncer Ltda., Bogotá D. C., Colombia
Iván Bobadilla, Centro de Control de Cáncer
Centro de Control de Cáncer Ltda., Bogotá D. C., Colombia
Jaider Vásquez, Centro de Control de Cáncer
Centro de Control de Cáncer Ltda., Bogotá D. C., Colombia
Javier Cifuentes, Centro de Control de Cáncer
Centro de Control de Cáncer Ltda., Bogotá D. C., Colombia
Felipe Torres, Centro de Control de Cáncer
Centro de Control de Cáncer Ltda., Bogotá D. C., Colombia
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