Device for examining a test object by means of gamma or X-rays
AssigneeU.S. Philips Corporation
InventorsJosef Kosanetzky, Karl H. Fischer
Life of this patent
Estimating the term…
Abstract
A device for examining a test object (4) by means of gamma or X-rays, comprising a primary X-ray source for generating at least one primary X-ray pencil beam (3) which is directed onto the test object (4), and at least one slit diaphragm (8, 9) which is arranged between the test object (4) and a detector (6, 7) and which directs scattered X-rays (26, 27, 28, 29) produced by the primary X-ray beam (3) in the test object (4) onto at least one detector (6, 7). The depth range of the test object that can be covered by the detectors can be changed without changing the position of the test object or the examination device, in that the position of the slit diaphragm (8, 9) relative to the detector (6, 7) can be changed by means of an adjusting device (18, 19).
Claims22
A device for detecting X-ray or gamma radiation scattered by an object in response to an incident radiation pencil beam, said device comprising:
- a body;
- at least one slit diaphragm secured to a body;
- at least one detector secured to the body, said at least one slit diaphragm for directing said scattered radiation onto said at least one detector;
- and
- adjusting means for changing the relative position of the at least one diaphragm to the at least one detector, each diaphragm position corresponding to a different region of the object producing said directed scattered radiation.
A radiation measuring head for measuring radiation scattered by an object comprising:
- a body, said body having a channel with an exit slit for forming incident radiation into a radiation pencil beam;
- a diaphragm member adjacent to said exit slit for receiving and directing radiation scattered by said object receiving said pencil beam;
- detector means arranged to receive said directed radiation from said diaphragm member;
- and
- means for adjusting the relative position of the diaphragm member to said detector, each position of the diaphragm member corresponding to a different region of the object producing said directed scattered radiation.
Dependencies are inferred from the claim text.