| http://www.w3.org/ns/prov#value | - In another embodiment, the outer diameter of the x-ray device is less than or equal to about three millimeters. [0053] In some applications, such as use in the stomach, the diameter of the dilated balloon 20 should be able to vary with the pressure applied, so that the diameter of the balloon can be adjusted to fit the size of the patient's stomach or other passage.
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