Evgeny Krestyannikov Jussi Tohka Ulla Ruotsalainen Statistical Modeling of Attenuation-Corrected Pet Data with Application to Reconstruction of Regional Time Activity Curves. 444-447 2007 ISBI http://dx.doi.org/10.1109/ISBI.2007.356884 conf/isbi/2007 db/conf/isbi/isbi2007.html#KrestyannikovTR07