US 12,446,844 B2
Methods and systems for an adaptive multi-phase angiography scan
Michael Sarju Vaz, Milwaukee, WI (US); and Chelsey Lewis, Waukesha, WI (US)
Assigned to GE Precision Healthcare LLC, Waukesha, WI (US)
Filed by GE Precision Healthcare LLC, Waukesha, WI (US)
Filed on Apr. 29, 2024, as Appl. No. 18/649,649.
Application 18/649,649 is a division of application No. 17/010,484, filed on Sep. 2, 2020, granted, now 11,992,353.
Prior Publication US 2024/0285247 A1, Aug. 29, 2024
Int. Cl. A61B 6/50 (2024.01); A61B 6/00 (2006.01); A61B 6/03 (2006.01); A61M 5/00 (2006.01)
CPC A61B 6/504 (2013.01) [A61B 6/032 (2013.01); A61B 6/481 (2013.01); A61B 6/542 (2013.01); A61M 5/007 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A system, comprising:
an x-ray source that emits a beam of x-rays toward a subject to be imaged;
a detector that receives the x-rays attenuated by the subject;
a data acquisition system (DAS) operably connected to the detector; and
a computer operably connected to the DAS and configured with instructions in non-transitory memory that when executed cause the computer to:
process projection data of a monitoring region of interest (ROI) of the subject from the DAS to measure a contrast signal of a contrast agent injected into the subject;
determine a hemodynamic marker of the subject based on the contrast signal, the hemodynamic marker used to approximate a duration between an arterial peak of the contrast agent at the monitoring ROI and a venous return to baseline of the contrast agent at the monitoring ROI;
generate a scan prescription for a multi-phase contrast scan of the subject based on the hemodynamic marker of the subject; and
perform the multi-phase contrast scan according to the scan prescription.