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X rays
Thanks Doctor Ozz

X rays

A radiologist is treating a patient with a malignant stomach tumor.
She must destroy the tumor but she cannot oprerate.
If the radiologist uses high intensity X rays to destroy
the tumor, she will destroy healthy tissue through which the X rays must pass.
If less powerful X rays are used they will spare the
healthy tissue but will not be strong enough to destroy the tumor.
How can the radiologist destroy the tumor without damaging the healthy tissue?

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