US 12,333,782 B2
Provision of a comparison dataset
Annette Birkhold, Stuttgart (DE); and Markus Kowarschik, Nuremberg (DE)
Assigned to Siemens Healthineers AG, Forchheim (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Sep. 21, 2022, as Appl. No. 17/949,323.
Claims priority of application No. 10 2021 210 879.2 (DE), filed on Sep. 29, 2021.
Prior Publication US 2023/0102646 A1, Mar. 30, 2023
Int. Cl. G06V 10/75 (2022.01); G06T 7/254 (2017.01); G06T 7/38 (2017.01); G06V 10/25 (2022.01)
CPC G06V 10/751 (2022.01) [G06T 7/254 (2017.01); G06T 7/38 (2017.01); G06V 10/25 (2022.01); G06T 2207/20224 (2013.01); G06T 2207/30104 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for providing a comparison dataset, the method comprising:
providing a time-resolved first dataset, which maps a first contrast medium flow in a region of interest of an examination object in a first period of time;
providing a time-resolved second dataset, which maps a second contrast medium flow in the region of interest of the examination object in a second period of time after the first period of time;
spatially registering the first dataset and the second dataset;
identifying a mapping of at least one vessel section of the region of interest in the first dataset and the second dataset with aid of a direction of a mapped flooding of the first contrast medium flow and/or of the second contrast medium flow,
temporally registering the first dataset and the second dataset to minimize a temporal difference of the mapped flooding of the first contrast medium flow and the second contrast medium flow in the at least one vessel section, wherein the registered first and second datasets each have a plurality of image points with a time intensity curve;
identifying a difference between the first contrast medium flow and the second contrast medium flow by a comparison of the time intensity curves of image points of the plurality of image points of the registered first and second datasets corresponding spatially to one another, wherein the comparison of the time intensity curves comprises a comparison of a gradient, a variance, an average intensity value, a maximum intensity value, an accumulated intensity value, or a combination thereof of the image points of the registered first and second datasets corresponding spatially to one another; and
providing the comparison dataset based on the registered first and second datasets,
wherein the comparison dataset has at least one parameter characterizing the difference describing a filling delay and/or a flow rate relationship is determined with aid of the comparison of the time intensity curves of the image points of the registered first and second datasets corresponding spatially to one another.