mosaiikkisäteilyssä

Mosaiikkisäteilyssä, known in English as mosaic radiation therapy, is a technique used in radiation oncology to treat tumors that are irregularly shaped or located in complex anatomical areas. This method involves dividing the intended radiation field into smaller, individual beams. Each of these beams is shaped precisely to match the irregular contour of the tumor, taking into account surrounding healthy tissues.

The principle behind mosaic radiation therapy is to deliver a high dose of radiation to the tumor while minimizing exposure to critical organs and tissues nearby. By carefully arranging and shaping these smaller beams, physicians can create a composite radiation field that conforms tightly to the target volume. This precise targeting helps to reduce the risk of side effects and damage to healthy structures.

The planning for mosaic radiation therapy is highly detailed, often utilizing advanced imaging techniques such as CT scans and MRI to accurately delineate the tumor and surrounding anatomy. Treatment planning software then calculates the optimal angles, shapes, and intensities for each individual beam. During treatment delivery, these beams are precisely directed to the patient's tumor.

This technique is particularly beneficial for tumors with irregular shapes, such as those in the head and neck region, or tumors located near sensitive organs like the spinal cord or optic nerves. Mosaic radiation therapy represents a refinement of traditional radiation techniques, allowing for more conformal and effective dose delivery in complex treatment scenarios.