Musculoskeletal motion flow fields using hierarchical variable-sized block matching in ultrasonographic video sequences.
We examine tissue deformations using non-invasive dynamic musculoskeletal ultrasonograhy, and quantify its performance on controlled in vitro gold standard (groundtruth) sequences followed by clinical in vivo data. The proposed approach employs a two-dimensional variable-sized block matching algorithm with a hierarchical full search. We extend this process by refining displacements to sub-pixel accuracy. We show by application that this technique yields quantitatively reliable results.
Department of Computer Science, University of Bristol, Bristol BS8 1UB, UK.
J D
JD
Revell
M
M
Mirmehdi
D S
DS
McNally
D000465:Algorithms; D000818:Animals; D001696:Biomechanical Phenomena; D002138:Calibration; D003952:Diagnostic Imaging; D004548:Elasticity; D006736:Horses; D006801:Humans; D008954:Models, Biological; D009038:Motion; D009141:Musculoskeletal System / Q000000981:diagnostic imaging*; D013710:Tendons / Q000000981:diagnostic imaging / Q000502:physiology; D014463:Ultrasonography; D014743:Videotape Recording