Abstract: The invention relates to a computer-implemented method (10) for determining the blood volume flow (IBI) through a portion (90i, i=1, 2, 3, . . . ) of a blood vessel (88) in an operating region (36) using a fluorophore. A plurality of images (801, 802, 803, 804, . . . ) are provided, which are based on fluorescent light in the form of light having wavelengths lying within a fluorescence spectrum of the fluorophore, and which show the portion (90i) of the blood vessel (88) at different recording times (t1, t2, t3, t4, . . . ). By processing at least one of the provided images (801, 802, 803, 804, . . .

Abstract: The invention relates to a computer-implemented method (10) for determining the blood volume flow (IBI) through a portion (90i, i=1, 2, 3, . . . ) of a blood vessel (88) in an operating region (36) using a fluorophore. A plurality of images (801, 802, 803, 804, . . . ) are provided, which are based on fluorescent light in the form of light having wavelengths lying within a fluorescence spectrum of the fluorophore, and which show the portion (90i) of the blood vessel (88) at different recording times (t1, t2, t3, t4, . . . ). By processing at least one of the provided images (801, 802, 803, 804, . . .

Abstract: A computer-implemented method determines a geometric feature of a section of a blood vessel in an operating region. An image of the section is provided. An adapted blood vessel model is provided via image processing for the section by adapting a blood vessel model, which describes the section as a flow channel with a wall delimiting the latter and with an axis of symmetry. A centerline of the section of the blood vessel is determined as a contiguous pixel line. A relative spatial position of the side of the wall is ascertained based on the centerline and the image provided. The geometric feature is derived from the adapted blood vessel model. The disclosure also relates to a method for determining the length of a contiguous pixel line in an image and a system for determining a geometric feature of a section of an object.

Abstract: A computer-implemented method determines a geometric feature of a section of a blood vessel in an operating region. An image of the section is provided. An adapted blood vessel model is provided via image processing for the section by adapting a blood vessel model, which describes the section as a flow channel with a wall delimiting the latter and with an axis of symmetry. A centerline of the section of the blood vessel is determined as a contiguous pixel line. A relative spatial position of the side of the wall is ascertained based on the centerline and the image provided. The geometric feature is derived from the adapted blood vessel model. The disclosure also relates to a method for determining the length of a contiguous pixel line in an image and a system for determining a geometric feature of a section of an object.