TY  - CHAP
A1  - Müller-Veggian, Mattea
A1  - Kops, Elena Rota
A1  - Quin, Peng
A1  - Herzog, Hans
T1  - MRI Based Attenuation Correction for Brain PET Images
T2  - Advances in medical engineering / [3rd RPT - Remagener Physiktage together with the Second Scientific Workshop of Medical Robotics, Navigation and Visualization ... Remagen ... 7.-9. März 2007]. Thorsten M. Buzug (ed.) Part 1.
N2  - This work describes a procedure to yield attenuation maps from MR images which are used for the absorption correction (AC) of brain PET data. Such an approach could be mandatory for future combined PET and MRI scanners, which probably do not include a transmission facility. T1-weighted MR images were segmented into brain tissue, bone, soft tissue, and sinus; attenuation coefficients corresponding to elemental composition and density as well as to 511 keV photon energy were respectively assigned. Attenuation maps containing up to four compartments were created and forward projected into sinograms with attenuation factors which then were used for AC during reconstruction of FDG-PET data. The commonly used AC based on a radioactive (68Ge) transmission scan served as reference. The reconstructed radioactivity values obtained with the MRI-based AC were about 20% lower than those obtained with PET-based AC if the skull was not taken into account. Considering the skull the difference was still about 10%. Our investigations demonstrate the feasibility of a MRI-based AC, but revealed also the necessity of a satisfying delineation of bone thickness which tends to be underestimated in our first approach of T1-weighted MR image segmentation.
Y1  - 2007
SN  - 978-3-540-68763-4
U6  - http://dx.doi.org/10.1007/978-3-540-68764-1_15
N1  - Springer proceedings in physics ; 114
SP  - 93
EP  - 97
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Haenni, D. R.
A1  - Beuscher, H.
A1  - Bochev, B.
T1  - New isomeric state in ¹⁴⁴ Eu
JF  - Annual report 1979 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 72)
Y1  - 1980
SP  - 48
PB  - Kernforschungsanlage
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Haenni, D. R.
A1  - Beuscher, H.
A1  - Lieder, R. M.
T1  - New isomeric state in ¹⁴⁵ Eu
JF  - Annual report 1978 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 36)
Y1  - 1979
SP  - 26
PB  - Kernforschungsanlage
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Beuscher, H.
A1  - Haenni, D. R.
A1  - Bochev, B.
T1  - New isomers in ¹⁴² Sm
JF  - Annual report 1978 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 36)
Y1  - 1979
SP  - 24
PB  - Kernforschungsanlage
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Beuscher, H.
A1  - Haenni, D. R.
A1  - Bochev, B.
T1  - New isomers in ¹⁴² Sm
JF  - Structure of medium-heavy nuclei, 1979 : proceedings of the 6. European Physical Soc. Nuclear Divisional Conference on the Structure of Medium-Heavy Nuclei held in Rhodes, Greece, 1-4 May 1979 / ed. Committee: G. S. Anagnostatos ... - (Conference series / Institute of Physics London, Bristol ; 49)
Y1  - 1980
SN  - 0-85498-140-3
N1  - Conference on the Structure of Medium Heavy Nuclei <6, 1979, Rodos> ; European Physical Society / Nuclear Physics Division
SP  - 126
PB  - Inst. of Physics
CY  - Bristol
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Beuscher, H.
A1  - Haenni, D. R.
T1  - New side-bands in ¹³⁴ Ce
JF  - Annual report 1980 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: F. Grümmer. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 99)
Y1  - 1981
SP  - 49
PB  - Kernforschungsanlage
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Didelez, J. P.
A1  - Lieder, R. M.
A1  - Bochev, B.
T1  - Non-equilibrium paricle emission in 75 Mev a particle bombardment of ²⁰⁹ Bi
JF  - Annual report 1980 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: F. Grümmer. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 99)
Y1  - 1981
SP  - 34
PB  - Verlag des Forschungszentrums Jülich
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Didelez, J. P.
A1  - Bochev, B.
A1  - Lieder, R. M.
T1  - Non-equilibrium particle emission in 45 Mev g-particle bombardment of 159 Tb
JF  - Annual report 1981 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: F. Grümmer. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 146)
Y1  - 1982
SP  - 36
PB  - Verlag des Forschungszentrums Jülich
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Lieder, R. M.
A1  - Didelez, J. P.
A1  - Beuscher, H.
T1  - Observation of a New Isomer in ²¹² Po
JF  - Physical review letters
Y1  - 1978
U6  - http://dx.doi.org/10.1103/PhysRevLett.41.742
SN  - 0031-9007
VL  - 41
IS  - 11
SP  - 742
EP  - 745
PB  - American Physical Society
CY  - Ridge, NY
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Lieder, R. M.
A1  - Didelez, J. P.
A1  - Beuscher, H.
T1  - Observation of a New Isomer in ²¹² Po
JF  - Annual report 1978 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. -
Y1  - 1979
N1  - Spezielle Berichte der Kernforschungsanlage Jülich ; 36
SP  - 38
PB  - Kernforschungsanlage
CY  - Jülich
ER  -