Operating method for a swiveling polyplanar imaging system for time-resolved imaging of an object being examined
First Claim
1. An operating method for a swiveling polyplanar imaging system for time-resolved imaging of an object, the swiveling polyplanar imaging system comprising a first and a second imaging planes arranged at an offset angle γ
- relative to each other and record at a fan angle β
, the method comprising;
recording a first set of projection images of the object by the first imaging plane from a first set of different angular positions, the first imaging plane being swiveled through at least an angle of φ
=180°
+β
;
generating a first data record from the first set of projection images;
recording a second set of projection images of the object by the second imaging plane from a second set of different angular positions, the second imaging plane being swiveled through at least the angle of φ
=180°
+β
;
generating a second data record from the second set of projection images;
storing the first data record and the second data record;
creating a third data record by selecting the projection images from the first data record beginning from a starting angle α and
the projection images from the second data record so that projection images in the third data record covers at least the angular range of φ
;
varying the starting angle α
from an initial value to a final value α
max;
continuously repeating the creating of the third data record and the varying of the starting angle α
until the starting angle α
has attained the final value α
max; and
evaluating a contrast of the projection images in the third data record,wherein three-dimensional images are reconstructed based on the third data record and a contrast of the three-dimensional images is evaluated, andwherein the contrast of the projection images in the third data record and the contrast of the three-dimensional images are evaluated by maximizing an overall grayscale value of the projection images in the third data record and an overall grayscale value of the three-dimensional image.
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Accused Products
Abstract
An operating method for a polyplanar imaging system for time-resolved imaging of an object is provided. First and second data records are recorded at a fan angle β from different angular positions by a first and second imaging planes arranged at an offset angle γ relative to each other and swiveled through an angle of at least φ=180°+β. A third data record is created by selecting projection images from the first data record beginning from a starting angle α and from the second data record so that the third data record covers an angular range of at least φ. Three-dimensional images are reconstructed based on the third data record. The starting angle α is varied for continuously creating the third data record until α has attained its final value. The contrast of projection images in the third data record or of three-dimensional images is evaluated.
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Citations
18 Claims
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1. An operating method for a swiveling polyplanar imaging system for time-resolved imaging of an object, the swiveling polyplanar imaging system comprising a first and a second imaging planes arranged at an offset angle γ
- relative to each other and record at a fan angle β
, the method comprising;recording a first set of projection images of the object by the first imaging plane from a first set of different angular positions, the first imaging plane being swiveled through at least an angle of φ
=180°
+β
;generating a first data record from the first set of projection images; recording a second set of projection images of the object by the second imaging plane from a second set of different angular positions, the second imaging plane being swiveled through at least the angle of φ
=180°
+β
;generating a second data record from the second set of projection images; storing the first data record and the second data record; creating a third data record by selecting the projection images from the first data record beginning from a starting angle α and
the projection images from the second data record so that projection images in the third data record covers at least the angular range of φ
;varying the starting angle α
from an initial value to a final value α
max;continuously repeating the creating of the third data record and the varying of the starting angle α
until the starting angle α
has attained the final value α
max; andevaluating a contrast of the projection images in the third data record, wherein three-dimensional images are reconstructed based on the third data record and a contrast of the three-dimensional images is evaluated, and wherein the contrast of the projection images in the third data record and the contrast of the three-dimensional images are evaluated by maximizing an overall grayscale value of the projection images in the third data record and an overall grayscale value of the three-dimensional image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- relative to each other and record at a fan angle β
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17. A non-transitory computer readable medium having a computer program executable for a control and evaluation system of a swiveling polyplanar imaging system for time-resolved imaging of an object, the swiveling polyplanar imaging system comprising a first and a second imaging planes arranged at an offset angle γ
- relative to each other and record at a fan angle β
, the computer program comprising;a computer subroutine that; generates a first data record from a first set of project images of the object recorded by the first imaging plane from a first set of different angular positions, the first imaging plane being swiveled through at least an angle of φ
=180°
+β
;generates a second data record from a second set of project images of the object recorded by the second imaging plane from a second set of different angular positions, the second imaging plane being swiveled through at least the angle of φ
=180°
+β
;creates a third data record by selecting projection images from the first data record and project images from the second data record beginning from a starting angle α
so that projection images in the third data record covers at least the angular range of φ
;continuously repeats the creating of the third data record by varying the starting angle α
until the starting angle α
has attained a final value α
max; andevaluates a contrast of the projection images in the third data record, wherein three-dimensional images are reconstructed based on the third data record and a contrast of the three-dimensional images is evaluated, and wherein the contrast of the projection images in the third data record and the contrast of the three-dimensional images are evaluated by maximizing an overall grayscale value of the projection images in the third data record and an overall grayscale value of the three-dimensional image.
- relative to each other and record at a fan angle β
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18. A swiveling polyplanar imaging system for time-resolved imaging of an object, comprising:
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a first imaging plane that records at a fan angle β
a first set of projection images of the object from a first set of different angular positions, the first imaging plane being swiveled through at least an angle of φ
=180°
+β
;a second imaging plane arranged at an offset angle γ
relative with the first imaging plane that records at the fan angle β
a second set of projection images of the object from a second set of different angular positions, the second imaging plane being swiveled through at least the angle of φ
=180°
+β
; anda control and evaluation system that; generates a first data record from the first set of the projection images, generates a second data record from the second set of the projection images, creates a third data record by selecting the projection images from the first data record and the projection images from the second data record beginning from a starting angle α
so that projection images in the third data record covers the angular range of φ
,continuously repeats the creating of the third data record by varying the starting angle α
until the starting angle α
has attained a final value α
max, andevaluates a contrast of the projection images in the third data record, wherein three-dimensional images are reconstructed based on the third data record and a contrast of the three-dimensional images is evaluated, and wherein the contrast of the projection images in the third data record and the contrast of the three-dimensional images are evaluated by maximizing an overall grayscale value of the projection images in the third data record and an overall grayscale value of the three-dimensional image.
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Specification