Dual modality imaging including quality metrics

摘要

An anatomical image data set and an emission image data set are acquired for a subject. An attenuation map is generated from the anatomical image data set. The emission image data set is reconstructed to generate an emission image. The reconstructing includes correcting for attenuation of emission radiation in the subject using the attenuation map. A value is calculated for a quality assurance (QA) metric quantifying alignment of the attenuation map with the emission image. The emission image is displayed or printed together with the calculated quality assurance metric. In some embodiments, prior to the reconstructing the attenuation map is registered with the emission image data set by performing a global rigid registration followed by a local non-rigid registration of a region of interest.

主权项

1. A method comprising:
generating an attenuation map from an anatomical image data set acquired of a subject; reconstructing an emission image data set acquired of the subject to generate an emission image, the reconstructing including correcting for attenuation of emission radiation in the subject using the attenuation map; calculating a value for a quality assurance metric quantifying alignment of the attenuation map with the emission image; storing the emission image and the calculated quality assurance metric in an image storage; subsequent to the storing, retrieving an instance of the emission image and an instance of the calculated quality assurance metric from the image storage; and displaying or printing the retrieved instance of the emission image together with the retrieved instance of the calculated quality assurance metric.