Dynamic perfusion imaging
AssigneeKoninklijke Philips N.V.
InventorsMichael Grass, Holger Schmitt
Life of this patent
Estimating the term…
Abstract
A method includes scanning a region of interest, during a contrast agent based perfusion scan, at a predetermined temporal sampling rate during contrast agent uptake in the region of interest, and generating time frame data indicative of the scanned region of interest. The method further includes identifying a predetermined change in an amount of the contrast agent in the region of interest from the time frame data. The method further includes scanning the region of interest at a lower temporal sampling rate, which is lower than the temporal sampling rate during the contrast agent uptake, in response to identifying the predetermined change in the amount of the contrast agent in the region of interest.
Claims24
A method, comprising:
- scanning a region of interest with an imaging system, during a contrast agent based perfusion scan, at a temporal sampling rate during contrast agent uptake in the region of interest, and generating time frame data indicative of the scanned region of interest with a reconstructor;
- determining a change in an amount of contrast agent in the region of interest from the time frame data with a contrast detector;
- generating a contrast signal indicating the change in the amount of contrast agent in the region of interest from the time frame data with the contrast detector;
- and
- scanning the region of interest with the imaging system at a lower temporal sampling rate, which is lower than the temporal sampling rate during the contrast agent uptake, in response to the generated contrast signal indicating the change in the amount of the contrast agent in the region of interest,
- wherein the lower temporal sampling rate varies during scanning the region of interest.
A system, comprising:
- an imaging system that performs a perfusion scan that generates time frame perfusion scan acquisition data;
- and
- a contrast agent detector, including:
- a contrast identifier that determines a presence of a contrast agent in the time frame perfusion scan acquisition data and generates a contrast signal indicating the presence of the contrast agent in the time frame acquisition data,
- wherein the contrast signal is used by an imaging system controller to vary a temporal sampling rate between a lower temporal sampling rate when the contrast agent is not present in the time frame data and a higher temporal sampling rate when the contrast agent is present in the time frame data.
A method, comprising:
- scanning a region of interest with an imaging system, during a contrast agent based perfusion scan, at a temporal sampling rate in the region of interest, and generating time frame data indicative of the scanned region of interest with a reconstructor;
- determining a presence of the contrast agent in the region of interest from the time frame data with a contrast detector;
- generating a contrast signal indicating the presence of the contrast agent in the region of interest from the time frame data with the contrast detector;
- and
- scanning the region of interest with the imaging system, wherein the contrast signal is used by an imaging system controller to vary the temporal sampling rate between a lower temporal sampling rate when the contrast agent is not present in the time frame data and a higher temporal sampling rate when the contrast agent is present in the time frame data.
Dependencies are inferred from the claim text.