	US 12,226,243 B2
	Computer-assisted tomography system
Georg Rose, Magdeburg (DE); Thomas Hoffman, Magdeburg (DE); Mathias Leopold, Magdeburg (DE); Oliver Großer, Magdeburg (DE); and Maciej Pech, Magdeburg (DE)
Assigned to OTTO-VON-GUERICKE-UNIVERSITÄT MAGDEBURG, Madgeburg (DE)
Appl. No. 17/787,630
Filed by OTTO-VON-GUERICKE-UNIVERSITÄT MAGDEBURG, Magdeburg (DE)
PCT Filed Dec. 16, 2020, PCT No. PCT/EP2020/086516 § 371(c)(1), (2) Date Aug. 14, 2022, PCT Pub. No. WO2021/130084, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 10 2019 135 782.9 (DE), filed on Dec. 23, 2019.
Prior Publication US 2022/0409148 A1, Dec. 29, 2022
Int. Cl. A61B 6/03 (2006.01); A61B 6/04 (2006.01); A61B 6/06 (2006.01); A61B 6/12 (2006.01)

CPC A61B 6/035 (2013.01) [A61B 6/0407 (2013.01); A61B 6/06 (2013.01); A61B 6/12 (2013.01)]

10 Claims

1. A computed tomography (CT) system, comprising:

a) at least one X-ray source,

b) at least one patient table for supporting a patient,

c) at least one collimator in a beam path of X-rays from the at least one X-ray source through the patient, wherein a directed X-ray beam selected from X-radiation of the at least one X-ray source is emitted to the patient through the at least one collimator,

d) at least one X-ray detector arranged permanently or at least temporarily in the beam path of the directed X-ray beam from the at least one collimator through the patient,

e) at least one automatically actuatable drive mechanism by which the at least one collimator is adjusted with respect to an emission direction of the directed X-ray beam transmitted by the at least one collimator relative to the patient and/or the at least one X-ray detector,

f) at least one electronic control device adapted for automatic actuation of the at least one automatically actuatable drive mechanism,

wherein the at least one electronic control device is adapted to determine a position of an object in a region of the at least one patient table, and, as a function of the position of the object determined, to adjust the at least one collimator by the at least one automatically actuatable drive mechanism such that the position of the object lies in a region of the directed X-ray beam transmitted by the at least one collimator,

wherein the at least on electronic control device is adapted for automatic tracking when the position of the object varies, and to track when the at least one collimator is moved to a varying position in respect to an emission direction of the directed X-ray beam by the at least one automatically actuatable drive mechanism, and

wherein in a case of layers to be tracked which exceed a maximum depth of the at least one X-ray detector a stepwise automated repositioning of the at least one patient table or a gantry system of the CT system is performed, such that a layer tracking is configured as a combination of an active collimator and positioning of the gantry system and/or of the at least one patient table.