TY  - RPRT
T1  - Ghosts in tomography : the null space of the radon transform
T3  - Saarbrücken, 1979
A1  - Louis,Alfred K.
Y1  - 2011/07/29
N2  - Let w o, …,wp-1 E S 1 be p distinct directions and let R denote the RADON transform. The functions f with support in the unit disc and with Rf(s, wj) = 0 for sE [-1,1] and j = 0, ... , p-1 are given. "Ghosts'; are constructed, i. e. functions in the null space that pretend not existent tumors. Methods to avoid such ghosts are indicated.
CY  - Saarbrücken
PB  - Universitäts- und Landesbibliothek
AD  - Postfach 151141, 66041 Saarbrücken
UR  - http://scidok.sulb.uni-saarland.de/volltexte/2011/4045
ER  -