EP 1208535 A1 20020529 - MRA SEGMENTATION USING ACTIVE CONTOUR MODELS
Title (en)
MRA SEGMENTATION USING ACTIVE CONTOUR MODELS
Title (de)
SEGMENTATION IN MAGNETRESONANZANGIOGRAPHIE DURCH ANWENDUNG EINES AKTIVKONTURMODELLS
Title (fr)
SEGMENTATION EN ARM UTILISANT DES MODELES ACTIFS DE CONTOURS
Publication
Application
Priority
- US 0017282 W 20000623
- US 14060999 P 19990623
Abstract (en)
[origin: WO0079481A1] A method and system of providing segmentation of volumetric three-dimensional image data set such as MRA images. Initially, a three-dimensional MRA volume is input. An initial surface S is then generated by thresholding the input. A signed distance function v to S is then generated, where v=v(x,t) and S is the zero level set of v(<.>,0). The process proceeds by iteratively updating v according to Formula (I) , the updating terminates at convergence or as determined by an operator. S' is then defined to be the zero level set of the current distance function v' and reinitialize v' to be a distance function to S'. The volume is continually iteratively updated such that a final distance function v is obtained. The first output obtained from this volume is a segmentation of vessels in the MRA data, obtained by computing the zero level set of v.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G06T 7/12 (2016.12 - EP US); G06T 7/149 (2016.12 - EP); G06V 10/755 (2022.01 - EP US); G06T 2207/10088 (2013.01 - EP); G06T 2207/20161 (2013.01 - EP); G06T 2207/30101 (2013.01 - EP)
Citation (search report)
See references of WO 0079481A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0079481 A1 20001228; WO 0079481 A9 20020606; EP 1208535 A1 20020529
DOCDB simple family (application)
US 0017282 W 20000623; EP 00943090 A 20000623