Practical device for the measurement of the absorbed dose versus depth in soft tissues
AssigneesCommissariat a l'Energie Atomique, Merlin Gerin
InventorsRaymond Bardoux, Henri Joffre
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Abstract
The present invention relates to a device for measuring the effective dose. In a preferred embodiment, the device includes a detector located in a cavity accommodated in the periphery of an inner cylinder which is eccentrically mounted in a right cylinder. The diameter of the right cylinder is close to twice the diameter of the eccentric cylinder and the cylinders are driven in rotation to set a rectilinear displacement to the cavity. The device can be used to determine the variation of the absorbed dose rate versus depth.
Claims5
A device for irradiation measurement comprising a phantom representing a portion of the human body and having a cavity for housing a radiation detector, the phantom comprising a first rotary right cylinder having a first axis and a cylindrical housing with a second axis parallel and eccentric relative to said first axis of the first cylinder, a second revolution cylinder mounted for rotation in said cylindrical housing, said cavity being eccentrically accommodated in said second cylinder, and drive means for rotating the second cylinder in an opposite direction and by a rotation angle twice the rotation angle of the first cylinder for varying the depth of the detector in the phantom.
Dependencies are inferred from the claim text.