Method and system for PET image reconstruction using portion of event data

摘要

A method and system for use in positron emission tomography, wherein a list-based reconstructor means (129) is configured to generate first portion volumetric data responsive to a first portion of a plurality of positron annihilation events detected during a positron emission tomography scan; generate a human-readable image indicative of the first portion volumetric data; use a list-based reconstruction technique to generate composite volumetric data responsive to the first portion volumetric data and a second portion of the plurality of positron annihilation events; and generate a composite human-readable image indicative of the composite volumetric data. In another aspect the reconstructor (129) is configured to selecting first or second portion event quantities responsive to one or more parameters including image definition requirements and processing time requirements.

主权项

1. A method, comprising the steps of:
selecting a first portion of list mode event data comprising a first quantity of annihilation events detected during a positron emission tomography scan, wherein the first quantity is greater than one, and the first quantity is determined prior to the selection of the first list mode even data portion; applying a list-based reconstruction technique generating first list mode event data portion thereby generating a first portion of tomographic data; generating an image indicative of the first portion tomographic data; displaying the image indicative of the first portion of tomographic data; applying a list-based reconstruction technique to at least one of the first list mode event data portion and the first portion of tomographic data, as well as to a second portion of the list mode event data comprising a second quantity of annihilation events detected during the positron emission tomography scan, wherein the second quantity is greater than one, thereby generating a composite tomographic data; generating an image indicative of the composite tomographic data; and displaying the image indicative of the composite tomographic data.