US 11,950,876 B2
Ungated non-contrast enhanced magnetic resonance angiography using multiple subset reconstruction and temporal maximum intensity projection
Jianing Pang, Chicago, IL (US); Robert R. Edelman, Highland Park, IL (US); and Ioannis Koktzoglou, Des Plaines, IL (US)
Assigned to Siemens Healthineers AG, Forchheim (DE); and NorthShore University HealthSystem, Evanston, IL (US)
Filed by Siemens Healthineers AG, Forchheim (DE); and NorthShore University HealthSystem, Evanston, IL (US)
Filed on Aug. 17, 2020, as Appl. No. 16/994,778.
Claims priority of provisional application 62/887,086, filed on Aug. 15, 2019.
Prior Publication US 2021/0045634 A1, Feb. 18, 2021
Int. Cl. A61B 5/00 (2006.01); A61B 5/055 (2006.01); G01R 33/483 (2006.01); G01R 33/56 (2006.01); G01R 33/563 (2006.01)
CPC A61B 5/004 (2013.01) [A61B 5/055 (2013.01); A61B 5/7292 (2013.01); G01R 33/4838 (2013.01); G01R 33/5608 (2013.01); G01R 33/5635 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for imaging a subject, the method comprising:
applying a radiofrequency pulse to the subject;
after a quiescent interval, performing a radial acquisition over a duration corresponding to a cardiac cycle of the subject to generate acquisition data;
reconstructing a plurality of 2-D images across a plurality of sequential temporal phases within the duration from the acquisition data, each of the 2-D images depicting a same partial cross-section of the subject and being reconstructed from a continuously sampled subset of the plurality of the sequential temporal phases; and
generating a temporal maximum intensity projection image of the same partial cross-section of the subject by tracking an intensity of each pixel across the plurality of 2-D images and selecting a maximum intensity value for the pixel across the plurality of 2-D images, which corresponds to a maximum intensity during the cardiac cycle, such that vascular stripe artifacts in the temporal maximum intensity projection image are removed relative to the plurality of 2-D images.