US 12,433,547 B2
Perfusion imaging
Michael Grass, Buchholz in der Nordheide (DE); Roland Proksa, Neu Wulmstorf (DE); and Sascha Krueger, Hamburg (DE)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 15/535,443
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Dec. 14, 2015, PCT No. PCT/EP2015/079596
§ 371(c)(1), (2) Date Jun. 13, 2017,
PCT Pub. No. WO2016/096729, PCT Pub. Date Jun. 23, 2016.
Claims priority of application No. 14198453 (EP), filed on Dec. 17, 2014.
Prior Publication US 2017/0325755 A1, Nov. 16, 2017
Int. Cl. A61B 6/03 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 6/00 (2024.01); A61B 6/50 (2024.01); G06V 10/141 (2022.01); G06V 10/56 (2022.01)
CPC A61B 6/037 (2013.01) [A61B 5/00 (2013.01); A61B 5/0077 (2013.01); A61B 5/02416 (2013.01); A61B 5/7285 (2013.01); A61B 6/032 (2013.01); A61B 6/4417 (2013.01); A61B 6/481 (2013.01); A61B 6/504 (2013.01); A61B 6/541 (2013.01); G06V 10/141 (2022.01); G06V 10/56 (2022.01); G06V 2201/03 (2022.01)] 6 Claims
OG exemplary drawing
 
1. A perfusion imaging system, comprising:
a computed tomography (CT) device configured to generate perfusion data from imaging a tissue of interest, wherein the perfusion data includes image data of a contrast agent passing through the tissue of interest, wherein the CT device comprises a gantry and an X-ray source for projecting a beam on the tissue of interest;
a remote photoplethysmography (PPG) device configured to focus on a patient's area at or near the tissue of interest, wherein the PPG device is located on the gantry and remains stationary when the X-ray source rotates during a scanning operation; and
at least one processor and a memory for storing a remote PPG software, wherein the PPG device is coupled to the at least one processor and the memory, and wherein the at least one processor is configured to execute the remote PPG software to:
determine at least one blood pulsation parameter within the beam projecting on the tissue of interest, wherein the at least one blood pulsation parameter is determined based on skin color variations due to changing blood flow conditions, wherein the blood pulsation parameter includes a phase of a cardiac cycle; and
determine at least one perfusion-pulsation parameter based on the perfusion data and the blood pulsation parameter, wherein the perfusion-pulsation parameter includes the perfusion data tagged with the phase of the cardiac cycle in which the perfusion data is acquired.