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Abstract

A system for delivery of a capsule to a target location within a subject body including a capsule including a locomotion element and a gamma emitting radioactive source, a radiation tracking subsystem capable of locating the gamma emitting radioactive source in three dimensions, and a locomotion control subsystem capable of controlling movement of the capsule by effecting movement of the locomotion element, based, at least partly, on a location of the gamma emitting radioactive source provided by the radiation tracking subsystem. A method of measuring a velocity of flow of a fluid at a target location within a subject body including inserting a capsule including a locomotion element and a gamma emitting radioactive source into the body, using a radiation tracking subsystem to locate the gamma emitting radioactive source in three dimensions, moving the capsule to the target location within the body using a locomotion control subsystem which controls movement of the capsule by effecting movement of the locomotion element, based, at least partly, on location of the gamma emitting radioactive source provided by the radiation tracking subsystem, and measuring the velocity of flow of the fluid at the target location. Related apparatus and methods are also described.

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First Claim