Radiation therapy using external beam
radiation therapy (EBRT) is playing an important role for effective treatment
of all kinds of tumors. Peripheral dose is the result of leakage and scatter
from multileaf collimators devices (MLCs), counts for 2-10% of the maximum dose
given to the patient, depending on the machine used and type of treatment.
The present
review reveals that despite of the recent advancements in linear accelerators
(LINAC) and MLC design and technology, the remaining small amount of leakage
(peripheral dose) of these devices still has significant side effects on
patient’s life span and quality of life after treatment.
Based on the findings in this review, it is
suggested that introduction of additional effective and patient-specific
shielding techniques would have great impact on reducing risk of radiating
healthy cells and hence adversely side effects on cancer patients.
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