US 11,653,891 B2
Apparatus and method for large field-of-view measurements of geometric distortion and spatial uniformity of signals acquired in imaging systems
Richard P. Mallozzi, Middleton, MA (US); and Joshua R. Levy, Salem, NY (US)
Assigned to THE PHANTOM LABORATORY, INCORPORATED, Greenwich, NY (US)
Filed by THE PHANTOM LABORATORY, INCORPORATED, Greenwich, NY (US)
Filed on Mar. 26, 2021, as Appl. No. 17/214,383.
Application 17/214,383 is a division of application No. 16/721,048, filed on Dec. 19, 2019, granted, now 11,064,967.
Application 16/721,048 is a division of application No. 15/589,557, filed on May 8, 2017, granted, now 10,555,715.
Claims priority of provisional application 62/356,332, filed on Jun. 29, 2016.
Prior Publication US 2021/0212655 A1, Jul. 15, 2021
Int. Cl. G06T 7/80 (2017.01); A61B 6/00 (2006.01); G01R 33/58 (2006.01); A61B 5/055 (2006.01)
CPC A61B 6/583 (2013.01) [G01R 33/58 (2013.01); G06T 7/80 (2017.01); A61B 5/055 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/30208 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method for measuring spatial uniformity of a signal acquired by an imaging system, comprising:
locating a phantom within the imaging system;
attributing virtual features to regions at known locations throughout a measurement volume of the phantom, each region containing only background liquid;
imaging the phantom with the imaging system; and
with a processor:
measuring average signals within the regions, and
interpolating between the average signals to determine spatial uniformity of a signal acquired by the imaging system, throughout a measurement volume of the phantom.