US 12,131,411 B2
Apparatus and method of producing a tomogram
Gil Travish, Begbroke (GB); Steve Wells, Begbroke (GB); Martin Holden, Begbroke (GB); and Ian Mitchell, Witney (GB)
Assigned to ADAPTIX LTD, Begbroke (GB)
Filed by Adaptix Ltd., Begbroke (GB)
Filed on Jul. 8, 2022, as Appl. No. 17/860,437.
Application 17/860,437 is a continuation of application No. PCT/GB2020/053170, filed on Dec. 10, 2020.
Claims priority of application No. 2000238 (GB), filed on Jan. 8, 2020.
Prior Publication US 2022/0343568 A1, Oct. 27, 2022
Int. Cl. G06T 5/00 (2024.01); G01N 23/046 (2018.01); G06T 7/00 (2017.01); G06T 11/00 (2006.01)
CPC G06T 11/008 (2013.01) [G01N 23/046 (2013.01); G06T 7/0002 (2013.01); G06T 11/006 (2013.01); G01N 2223/401 (2013.01); G06T 2207/10072 (2013.01); G06T 2211/424 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of producing a tomogram, the method comprising the steps of:
acquiring a plurality of first x-ray attenuation images of a subject, the plurality of first x-ray attenuation images suitable for reconstructing a first density function indicative of attenuation of the x-ray radiation, the first density function having a first resolution;
identifying, from the plurality of first x-ray attenuation images, at least one first region in which entropy and/or gradient exceeds a predefined threshold entropy and/or gradient, respectively;
acquiring at least one second x-ray attenuation image of the at least one first region; and
reconstructing a second density function indicative of attenuation of the x-ray radiation from the plurality of first x-ray attenuation images and the at least one second x-ray attenuation image, the second density function having a second resolution higher than the first resolution.