System and method of determining a center of mass of an imaging subject for x-ray flux management control
First Claim
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1. A method of centering a subject in a medical imaging device comprising the steps of:
- positioning a subject in a scanning bay;
comparing a center of mass of the subject to a reference point; and
repositioning the subject in the scanning bay to reduce a difference in position between the center of mass of the subject and the reference point.
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Abstract
A system and method of diagnostic imaging is provided that includes positioning a subject in a scanning bay, comparing a center of mass of the subject to a reference point, and repositioning the subject in the scanning bay to reduce a difference in position between the center of mass of the subject and the reference point. The present invention automatically selects a proper attenuation filter configuration, corrects patient centering, and corrects noise prediction errors, thereby increasing dose efficiency and tube output.
60 Citations
29 Claims
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1. A method of centering a subject in a medical imaging device comprising the steps of:
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positioning a subject in a scanning bay;
comparing a center of mass of the subject to a reference point; and
repositioning the subject in the scanning bay to reduce a difference in position between the center of mass of the subject and the reference point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer readable storage medium having stored thereon a computer program representing a set of instructions, which when executed by at least one processor, causes the at least one processor to:
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determine a centroid of a subject;
determine a value of mis-centering of the centroid of the subject within a medical imaging device; and
adjust a position of the subject within the imaging device to compensate for the value of mis-centering. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method of medical imaging comprising the steps of:
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positioning a subject in a medical imaging device;
determining a value of mis-elevation of the subject; and
adjusting an elevation of the subject device to reduce the value of mis-elevation. - View Dependent Claims (23, 24, 25, 26)
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27. A tomographic system comprising:
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a rotatable gantry having a bore centrally disposed therein;
a table movable within the bore and configured to position a subject for tomographic data acquisition within the bore;
a high frequency electromagnetic energy projection source positioned within the rotatable gantry and configured to project high frequency electromagnetic energy toward the subject;
a detector array disposed within the rotatable gantry and configured to detect high frequency electromagnetic energy projected by the projection source and impinged by the subject; and
a computer programmed to;
determine a centroid of the subject; and
adjust an elevation of the subject to align the centroid with a reference position. - View Dependent Claims (28, 29)
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Specification