公开(公告)号：US12125662B2

公开(公告)日：2024-10-22

申请号：US17657692

申请日：2022-04-01

Applicant: GE Precision Healthcare LLC

Inventor： John M Boudry ,  Ryan J Lemminger ,  Adam Israel Cohen ,  Jean-Francois Larroux

IPC: H01J35/14 ,  A61B6/03 ,  A61B6/40 ,  G01N23/046

CPC classification number: H01J35/153 ,  A61B6/032 ,  A61B6/4028 ,  G01N23/046 ,  H01J35/147 ,  H01J2235/086

Abstract: Systems/techniques that facilitate correction of intra-scan focal-spot displacement are provided. In various embodiments, a system can access a first gantry angle of a medical scanner. In various aspects, the system can determine a first displacement of a focal-spot of the medical scanner based on the first gantry angle, by referencing a mapping that correlates gantry angles to focal-spot displacements. In various instances, the system can compensate, via one or more focal-spot position adjusters of the medical scanner, for the first displacement.

公开(公告)号：US20230317398A1

公开(公告)日：2023-10-05

申请号：US17657692

申请日：2022-04-01

Applicant: GE Precision Healthcare LLC

Inventor： John M Boudry ,  Ryan J Lemminger ,  Adam Israel Cohen ,  Jean-Francois Larroux

IPC: H01J35/14 ,  A61B6/00 ,  A61B6/03 ,  G01N23/046

CPC classification number: H01J35/153 ,  A61B6/4028 ,  A61B6/032 ,  H01J35/147 ,  G01N23/046 ,  H01J2235/086

Abstract: Systems/techniques that facilitate correction of intra-scan focal-spot displacement are provided. In various embodiments, a system can access a first gantry angle of a medical scanner. In various aspects, the system can determine a first displacement of a focal-spot of the medical scanner based on the first gantry angle, by referencing a mapping that correlates gantry angles to focal-spot displacements. In various instances, the system can compensate, via one or more focal-spot position adjusters of the medical scanner, for the first displacement.

公开(公告)号：US12176099B2

公开(公告)日：2024-12-24

申请号：US17657411

申请日：2022-03-31

Applicant: GE Precision Healthcare LLC

Inventor： Arka Datta ,  Adam Israel Cohen

IPC: G16H40/40 ,  A61B6/00 ,  A61B6/40 ,  A61B6/42

Abstract: Systems/techniques that facilitate low-cost estimation and/or tracking of intra-scan focal-spot displacement are provided. In various embodiments, a system can cause a medical imaging scanner to perform an air scan. In various aspects, the system can access data produced by the medical imaging scanner and relating to the air scan, where the data can include a set of gantry angles swept by an X-ray tube during the air scan, where the data can include a set of intensity value matrices recorded by a multi-channel-multi-row detector during the air scan, and where the set of intensity value matrices respectively correspond to the set of gantry angles. In various instances, the system can compute a set of channel-spanning intensity slopes based on the set of intensity value matrices. In various cases, the system can apply a slope-to-displacement transfer function to the set of channel-spanning intensity slopes, thereby yielding a set of focal-spot displacements.

公开(公告)号：US20230317264A1

公开(公告)日：2023-10-05

申请号：US17657411

申请日：2022-03-31

Applicant: GE Precision Healthcare LLC

Inventor： Arka Datta ,  Adam Israel Cohen

IPC: G16H40/40 ,  A61B6/00

CPC classification number: G16H40/40 ,  A61B6/4021 ,  A61B6/4035 ,  A61B6/4266

Abstract: Systems/techniques that facilitate low-cost estimation and/or tracking of intra-scan focal-spot displacement are provided. In various embodiments, a system can cause a medical imaging scanner to perform an air scan. In various aspects, the system can access data produced by the medical imaging scanner and relating to the air scan, where the data can include a set of gantry angles swept by an X-ray tube during the air scan, where the data can include a set of intensity value matrices recorded by a multi-channel-multi-row detector during the air scan, and where the set of intensity value matrices respectively correspond to the set of gantry angles. In various instances, the system can compute a set of channel-spanning intensity slopes based on the set of intensity value matrices. In various cases, the system can apply a slope-to-displacement transfer function to the set of channel-spanning intensity slopes, thereby yielding a set of focal-spot displacements.