Back to results
US 2014/0112431 A1Published application
X-ray beam transmission profile shaper
AssigneeKoninklijke Philips N.V.
InventorsRodney Arnold Mattson, Randall Peter Luhta
Life of this patent
Estimating the term…
Abstract
An imaging system (300) includes a radiation source (308) that emits radiation from a focal spot (312) in a direction of an examination region. The imaging system further includes a beam shaper (314), located between the focal spot and the examination region, that shapes an x-ray transmission profile of the radiation emitted from the source and incident on the beam shaper such that the radiation leaving the beam shaper has a pre-determined transmission profile.
Claims26
An imaging system, comprising:
- a radiation source that emits radiation from a focal spot in a direction of an examination region;
- and
- a beam shaper, located between the focal spot and the examination region, that shapes an x-ray transmission profile of the radiation emitted from the source and incident on the beam shaper such that the radiation leaving the beam shaper has a pre-determined transmission profile.
A method, comprising:
- shaping a transmission profile of an x-ray beam used to scan a subject or object so that the transmission profile decreases from a central region of the beam to a periphery of the beam using a beam shaper that includes a two dimensional array of individual attenuators which are separated from each other and which are arranged such that a lesser density of the attenuators are located nearer the central region and greater density of the attenuators are located farther from die central region;
- and
- scanning the subject or object using the beam with the shaped transmission profile,
A beam shaper configured for use in an imaging system, comprising:
- two dimensional array of individual radiation attenuating elements separated from each other and arranged with respect to each other such that a density of the attenuating elements varies along an x-axis direction, wherein the individual radiation attenuating elements fully or substantially fully attenuate x-rays.
Dependencies are inferred from the claim text.