Heavy ion therapy is a rapidly developing new technology.It is based on the Bragg effect of heavy ions,i:e.,most of the energy of heavy ions is deposited at the end of its range,and its track is almost straight.Compared with traditional X-ray therapy,the advantage of heavy ion is that the dose can be concentrated on the tumor body while the surrounding normal tissues receive only a small dose.This means that,for tumors near the important organs of the human body,heavy ion therapy has a unique advantage that other radiation means do not have,the tumor receives enough doses,and the important organs receive a negligible dose.
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