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US 2022/0022836 A1Published application
Dose reduction for cardiac computed tomography
OwnerFrancisco Contijoch, Brendan Colvert +1inventors
InventorsFrancisco Contijoch, Brendan Colvert, Elliot McVeigh
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Abstract
Methods, devices, and systems for computed tomography (CT) imaging technologies that are tailored to specific regions of interest and provide a reduced radiation dose. An imaging system for cardiac CT comprises a beam-shaping filtration and exposure control technologies specifically tailored to imaging of the heart.
Claims20
A method of reducing radiation dose in computed tomography (CT) imaging, comprising:
- positioning a region of interest of an imaging target proximate to an isocenter of a CT scanner;
- and
- adjusting a fluence of X-ray radiation produced by an X-ray source of the CT scanner using a beam-shaping filter,
- wherein the beam-shaping filter is disposed between the X-ray source of the CT scanner and the region of interest, and
- wherein the beam-shaping filter is configured to attenuate the X-ray radiation on areas of the imaging target located outside of the region of interest and simultaneously transmit the X-ray radiation to the areas of the imaging target located outside of the region of interest to provide a fluence of the X-ray radiation on the areas of the imaging target located outside of the region of interest at a level less than a predetermined fraction of a fluence of the X-ray radiation within the region of interest.
2 more elements
A computed tomography (CT) scanner, comprising:
- an X-ray source;
- and
- a beam-shaping filter disposed between the X-ray source and a location where a region of interest of an imaging target is placed, wherein:
- the CT scanner is configured such that an isocenter of the CT scanner is proximate to the region of interest, wherein the CT scanner is further configured to adjust a fluence of X-ray radiation produced by the X-ray source using the beam-shaping filter, and
- wherein the beam-shaping filter is configured to attenuate the X-ray radiation on areas of the imaging target located outside of the region of interest and, at the same time, transmit the X-ray radiation to the areas of the imaging target located outside of the region of interest to provide a fluence of the X-ray radiation on the areas of the imaging target located outside of the region of interest at a level less than a predetermined fraction of a fluence of the X-ray radiation within the region of interest.
2 more elements
Dependencies are inferred from the claim text.