Zheng Zhang, 5422133 Davidson Rd, Waukesha, WI 53186

2021020, Jul 8, 2021

Feb 13, 2017

16/070791

Amy PERKINS - PHILADELPHIA PA, US
Chi-Hua TUNG - AURORA OH, US
Zheng ZHANG - CHICAGO IL, US

G06T 11/00
A61B 6/03
A61B 6/00

In an emission imaging method, emission imaging data are acquired for a subject using an emission imaging scanner () including radiation detectors (). The emission imaging data are reconstructed to generate a reconstructed image by executing a constrained optimization program including a measure of data fidelity between the acquired emission imaging data an a reconstruct-image transformed by a data model of the imaging scanner to emission imaging data. During the reconstructing, each iteration of the constrained optimization program is constrained by an image variability constraint. The reconstructed image is displayed the reconstructed image on a display device. The emission imaging may be positron emission tomography (PET) imaging data, optionally acquired using a sparse detector array. The image variability constraint may be a constraint that an image total variation (image TV) of a latent image defined using a Gaussian blurring matrix be less than a maximum value.

2020022, Jul 16, 2020

Sep 21, 2018

16/648375

- Chicago IL, US
Buxin Chen - Chicago IL, US
Zheng Zhang - Chicago IL, US
Emil Sidky - Chicago IL, US
Dan Xia - Chicago IL, US

A61B 6/00
A61B 6/03
A61B 6/08

A multi-spectral tomography imaging system includes one or more source devices configured to direct beams of radiation in multiple spectra to a region of interest (ROI), and one or more detectors configured to receive the beams of radiation. The system includes a processor configured to cause movement in at least one of the components such that a first beam of radiation with a first spectrum is directed to the ROI for less than 360 degrees of movement of the ROI. The processor is also configured to process data detected by the one or more detectors, where the data results at least in part from the first beam of radiation with the first spectrum that is directed to the ROI for less than the 360 degrees of movement of the ROI. The processor is further configured to generate an image of the ROI based on the processed data.