05582173 is referenced by 158 patents and cites 2 patents.

A region of tissue is scanned as a series of 2-D frames. The correlation of substantially homogeneous speckle regions in the frames is determined and is compared with a precalibrated speckle correlation-versus-distance function to give an estimate of the distance between the frames. In some applications, the frames are partitioned into sub-frames, whose correlation values and distances are combined according to predetermined functions to give a distance estimate between the frames as a whole. The reliability of the distance estimates is improved and evaluated in various ways, for example, by comparing combinations of possible distances from end frames via intermediate frames, and by comparing computed frame or sub-frame velocities with a known or estimated transducer velocity. Once the relative distances of the 2-D frames are estimated, a 3-D image is compiled using registration techniques. Image frames need not be parallel.

Title
System and method for 3-D medical imaging using 2-D scan data
Application Number
8/529778
Publication Number
5582173
Application Date
September 18, 1995
Publication Date
December 10, 1996
Inventor
Ming Li
Seattle
WA, US
Agent
Jeffrey Slusher
Assignee
Siemens Medical Systems
NJ, US
IPC
A61B 8/00
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