Closed loop registration control for multi-modality soft tissue imaging

摘要

A 3D ultrasound image from a memory is compared with a 3D diagnostic image from a memory by a localizer and registration unit which determines a baseline transform which registers the 3D diagnostic and ultrasound volume images. The target region continues to be examined by an ultrasound scanner which generates a series of real-time 2D or 3D ultrasound or other lower resolution images. The localizer and registration unit compares one or a group of the 2D ultrasound images with the 3D ultrasound image to determine a motion correction transform. An image adjustment processor or program (operates on the 3D diagnostic volume image with the baseline transform and the motion correction transform, to generate a motion corrected image that is displayed on an appropriate display.

主权项

1. An image registration apparatus comprising:
a first scanner configured to, a first amount of time prior to a procedure, generate and store at least one diagnostic image of a target area in 3D and higher dimensions; a second scanner configured to, a second amount of time prior to the procedure, generate and store at least one ultrasound image of the target area in 3D and higher dimensions, and during the procedure, generate real-time images in 2D, the second amount of time being shorter than the first amount of time; a localizer configured to determine
a baseline transform to iteratively register the respective diagnostic and ultrasound images of the target area in 3D and higher dimensions,a motion correction transform to register the respective real-time and stored ultrasound images, anda similarity measure indicative of a degree of similarity between the registered real-time images and the ultrasound image; and an adjustment processor configured to adjust at least a selected portion of the diagnostic image in accordance with the baseline transform and the motion correction transform and to correct for motion within the target area using the similarity measure.