公开(公告)号：US09747701B2

公开(公告)日：2017-08-29

申请号：US14831568

申请日：2015-08-20

Applicant: General Electric Company

Inventor： Sangtae Ahn ,  Ravindra Mohan Manjeshwar ,  Floribertus P M Heukensfeldt Jansen ,  Steven Gerard Ross

IPC: G06K9/00 ,  G06T11/00 ,  G06T7/00 ,  A61B6/03 ,  A61B6/00

CPC classification number: G06T11/003 ,  A61B6/037 ,  A61B6/469 ,  A61B6/5217 ,  G06T7/0012 ,  G06T7/73 ,  G06T11/006 ,  G06T2207/10104 ,  G06T2207/20104 ,  G06T2207/30096 ,  G06T2210/41 ,  G06T2211/424

Abstract: A method includes acquiring scan data for an object to be imaged using an imaging scanner. The method also includes reconstructing a display image using the scan data. Further, the method includes determining one or more aspects of a quantitation imaging algorithm for generating a quantitation image, wherein the one or more aspects of the quantitation imaging algorithm are selected to optimize a quantitation figure of merit for lesion quantitation. The method also includes reconstructing a quantitation image using the scan data and the quantitation imaging algorithm; displaying, on a display device, the display image; determining a region of interest in the display image; determining, for the region of interest, a lesion quantitation value using a corresponding region of interest of the quantitation image; and displaying, on the display device, the lesion quantitation value.

公开(公告)号：US10261201B2

公开(公告)日：2019-04-16

申请号：US15090156

申请日：2016-04-04

Applicant: General Electric Company

Inventor： Geng Fu ,  Floribertus P M Heukensfeldt Jansen ,  Jianjun Guo ,  Sergei Ivanovich Dolinsky

IPC: G01T1/202 ,  G01T1/29

Abstract: A method for determining depth-of-interaction correction in a PET system. The method includes modifying crystal and readout configuration to improve depth-dependent arrival profile of scintillation photons, creating a photon dispersion model within a scintillator crystal, measuring photon arrival profile of individual gamma ray event, deriving an estimated depth-of-interaction, and deriving a gamma ray event time based on a time stamp corrected with the estimated depth-of-interaction. The method further includes modeling dispersion at different depths of interaction within the scintillator crystal, providing a reflector layer to delay back-reflected photons, providing two respective readouts for the same gamma ray event from two respective pixels optically coupled by a backside reflector or modified crystal configuration, calculating a time difference of the photon arrival at the two pixels, and estimating the depth-of-interaction by applying a statistical weighting.

公开(公告)号：US09817134B1

公开(公告)日：2017-11-14

申请号：US15262477

申请日：2016-09-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Geng Fu ,  Floribertus P M Heukensfeldt Jansen ,  Hua Qian ,  Xiao Jin ,  Jianjun Guo

IPC: G01T1/20

CPC classification number: G01T1/2018

Abstract: Embodiments of the invention are utilized to improve the timing performance of SiPM based PET detectors with light-sharing configuration. The universal readout design utilizes adaptive group readout to process noisy and slow signals generated by SiPM devices, and provides enhanced timing capabilities with simplified readout electronics.