A comparative analysis of similarity mapping and eigenimaging as applied to dynamic MR imaging of a low grade astrocytoma.
This paper compares the abilities of similarity mapping and eigenimaging for the purpose of identifying (segmenting) different image structures in dynamic MR imaging. As an illustrative example a case of dynamic images with a low grade astrocytoma was chosen. It was found that the similarity mapping was more successful than eigenimaging in determining the extent and position of a low grade astrocytoma. Also, similarity mapping was able to identify another region with a different and uncorrelated temporal pattern that was later diagnosed as a cyst.
Department of Radiology, Massachusetts General Hospital/Harvard University, Boston.
J
J
Rogowska
K
K
Preston
H J
HJ
Aronen
G L
GL
Wolf
D000465:Algorithms; D001254:Astrocytoma / Q000175:diagnosis*; D001921:Brain / Q000473:pathology; D001927:Brain Diseases / Q000175:diagnosis; D001932:Brain Neoplasms / Q000175:diagnosis*; D003287:Contrast Media / Q000008:administration & dosage; D003560:Cysts / Q000175:diagnosis; D017352:Echo-Planar Imaging / Q000379:methods; D005682:Gadolinium / Q000008:administration & dosage; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007275:Injections, Intravenous; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D009942:Organometallic Compounds / Q000008:administration & dosage; D004369:Pentetic Acid / Q000008:administration & dosage / Q000031:analogs & derivatives
D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; C064925:gadodiamide; D005682:Gadolinium; D019786:Gadolinium DTPA