Finding related functional neuroimaging volumes.
We describe a content-based image retrieval technique for finding related functional neuroimaging experiments by voxelization of sets of stereotactic coordinates in Talairach space, comparing the volumes and reporting related volumes in a sorted list. Voxelization is accomplished by convolving each coordinate with a Gaussian kernel. The scheme allows us to compare experiments represented as either lists of coordinates or volumes, and we introduce alternative entrances to databases by image-based indices constructed via novelty measures and singular value decomposition.
Nielsen
Finn Arup
FA
Informatics and Mathematical Modelling, Building 321, Technical University of Denmark, Lyngby, Denmark. fn@imm.dtu.dk
Hansen
Lars Kai
LK
D001921:Brain / Q000000981:diagnostic imaging* / Q000473:pathology*; D016208:Databases, Factual; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging; D015999:Multivariate Analysis; D011859:Radiography