Systems and methods for adjustable view frequency computed tomography imaging
First Claim
1. An imaging system comprising:
- a computed tomography (CT) acquisition unit comprising an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged, the X-ray source and CT detector configured to be rotated about the object to be imaged and to collect a series of views of the object as the X-ray source and CT detector rotate about the object to be imaged; and
a processing unit operably coupled to the CT acquisition unit and configured to control the CT acquisition unit to vary a view duration for the views of the series, the view duration for a particular view defining an angular range of rotation between blanking periods separating the particular view from adjacent views for an imaging information acquisition period for the particular view, wherein the angular range of rotation varies with variation of the view duration, wherein the series of views includes a first group of views having a first view duration and a second group of views having a second view duration that is different than the first view duration.
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Accused Products
Abstract
An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged. The X-ray source and CT detector are configured to be rotated about the object to be imaged and to collect a series of views of the object as the X-ray source and CT detector rotate about the object to be imaged. The processing unit is operably coupled to the CT acquisition unit and configured to control the CT acquisition unit to vary a view duration for the views of the series. The view duration for a particular view defines an imaging information acquisition period for the particular view, wherein the series of views includes a first group of views having a first view duration and a second group of views having a second view duration that is different than the first view duration.
12 Citations
22 Claims
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1. An imaging system comprising:
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a computed tomography (CT) acquisition unit comprising an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged, the X-ray source and CT detector configured to be rotated about the object to be imaged and to collect a series of views of the object as the X-ray source and CT detector rotate about the object to be imaged; and a processing unit operably coupled to the CT acquisition unit and configured to control the CT acquisition unit to vary a view duration for the views of the series, the view duration for a particular view defining an angular range of rotation between blanking periods separating the particular view from adjacent views for an imaging information acquisition period for the particular view, wherein the angular range of rotation varies with variation of the view duration, wherein the series of views includes a first group of views having a first view duration and a second group of views having a second view duration that is different than the first view duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 21, 22)
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8. A method comprising:
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acquiring computed tomography (CT) imaging data of an object using a CT acquisition unit comprising an X-ray source and CT detector that rotate about the object, wherein the CT imaging data is acquired in a series of views as the X-ray source and CT detector are rotated about the object; controlling the CT acquisition unit, during CT imaging data acquisition, to vary a view duration for the views of the series, the view duration for a particular view defining an angular range of rotation between blanking periods separating the particular view from adjacent views for an imaging information acquisition period for the particular view, wherein the angular range of rotation varies with variation of the view duration, wherein the series of views includes a first group of views having a first view duration and a second group of views having a second view duration that is different than the first view duration; and reconstructing an image using the CT imaging data. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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acquiring a scout image of an object using a computed tomography (CT) acquisition unit comprising an X-ray source and CT detector; determining, using at least one processing unit, based on the scout image, a scan configuration to be provided by the CT acquisition unit to achieve a desired IQ at a uniform view duration, the scan configuration including a desired radiation dose; comparing the determined scan configuration to a capability of the CT acquisition unit to provide the desired radiation dose; and, if the capability of the imaging system does not meet the determined scan configuration, varying a view duration of views of a series during acquisition of CT imaging data to provide the desired IQ, the view duration for a particular view defining an angular range of rotation between blanking periods separating the particular view from adjacent views for an imaging information acquisition period for the particular view, wherein the angular range of rotation varies with variation of the view duration, wherein, during acquisition of CT imaging data, the X-ray source and CT detector are rotated about the object, wherein the CT imaging data is acquired in the series of views as the X-ray source and CT detector are rotated about the object; and reconstructing an image using the CT imaging data. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification