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 - Conte, V. A1 - Colautti, P. A1 - De Nardo, L. T1 - Microdosimetric spectra down to 70 nm JF - Annual report / Istituto Nazionale di Fisica Nucleare, LNL, Laboratori Nazionali di Legnaro. 1997 (1998) Y1 - 1998 N1 - Nebent.: Annual Report LNL-INFN SP - 67 EP - 68 ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Bochev, B. A1 - Didelez, J. P. A1 - Kutsarova, T. T1 - Mechanism of a induced non equilibrium reactions from particle g-coincidence studies JF - Frühjahrstagung ... des Fachausschusses Kernphysik und Hochenergiephysik der DPG (Sektion A: Kernphysik) / Deutsche Physikalische Gesellschaft (1981) Y1 - 1981 SP - 764 ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Beuscher, H. A1 - Haenni, D. R. A1 - Lieder, R. M. T1 - Measurement of low-energy conversion eclectrons with the orange-ß-spectrometer JF - Annual report 1978 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 36) Y1 - 1979 SP - 39 PB - Kernforschungsanlage CY - Jülich ER - TY - CHAP A1 - Müller-Veggian, Mattea A1 - Bochev, B. A1 - Lieder, R. M. A1 - Didelez, J. P. T1 - Measuremenmt of particle spectra of α induced non-equilibrium reactions for ²⁰⁶⁻²¹² Po T2 - Proceedings of the International Conference on Nuclear Physics. 1980,1 (1981) Y1 - 1981 N1 - Vol. 1: Abstracts of papers ; International Conference on Nuclear Physics <1980, Berkeley, Calif.> SP - 452 ER - TY - CHAP A1 - Müller-Veggian, Mattea A1 - Dehnhardt, W. A1 - Mills, J. S. T1 - Levels in the closed neutron shell nucleus ¹⁴² Nd T2 - International Symposium on Highly Excited States in Nuclei held at Jülich from 23-26 September 1975 : proceedings; Vol. 1 Contributed papers Y1 - 1975 N1 - International Symposium on Highly Excited States in Nuclei <1975, Jülich> ; European Physical Society ; Institut für Kernphysik SP - 51 PB - Verlag des Forschungszentrums Jülich CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Gono, Y. A1 - Lieder, R. M. T1 - Level structure in the light transitional nuclei ¹³⁶,¹³⁷,¹³⁸ Ce JF - Proceedings of the International Conference on Nuclear Structure : Tokyo, Sept. 5 - 10, 1977 / ed. by T. Marumori. - Journal of the Physical Society of Japan ; Vol. 44, 1978 : Suppl. Y1 - 1978 N1 - International Conference on Nuclear Structure <1977, Tokyo> SP - 862 PB - Physical Soc. of Japan CY - Tokyo ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Taras, P. A1 - Dehnhardt, W. A1 - Mills, S. J. T1 - Level properties in the even even nuclei ¹³⁰,¹³²,¹³⁴ Ce - further evidence for the back bending effect JF - Conférence européenne de physique nucléaire : Aix-en-Provence, 26 juin - 1. juillet 1972 ; comptes rendus des communication = European conference on nuclear physics / patronnée par La Société Française de Physique et La Société Européenne de Physique. Publ. avec le concours de Madeleine Porneuf Y1 - 1972 N1 - European Conference on Nuclear Physics <1972, Aix-en-Provence> ; Société Française de Physique ; European Physical Society ; Journal de physique Suppl.: Colloque ; 1972,C5 = [33],8/9,Suppl. SP - 102 CY - [Paris] ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - De Nardo, L. A1 - Balbinot, G. A1 - Colautti, P. T1 - Leak Microstructures Operation at low pressure of propane: application at the Trigger&Anti-Trigger system of the STARTRACK Experiment JF - Annual report / Istituto Nazionale di Fisica Nucleare, LNL, Laboratori Nazionali di Legnaro. 2004 (2005) Y1 - 2005 SN - 88-7337-008-X N1 - LNL-INFN(REP)-204/2005 SP - 242 EP - 243 ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Morek, T. A1 - Beuscher, H. A1 - Bochev, B. T1 - Isomeric states in ¹³⁴ Ba JF - Annual report 1979 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 72) Y1 - 1980 SP - 44 PB - Kernforschungsanlage CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Morek, T. A1 - Beuscher, H. A1 - Bochev, B. T1 - Isomeric states in ¹³⁴ Ba JF - Zeitschrift für Physik / A, Hadrons and nuclei. 298 (1980), H. 4 Y1 - 1980 SN - 1431-5831 SP - 267 EP - 271 ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Morek, T. A1 - Bochev, B. A1 - Kutsarova, T. T1 - Isomeric state in ¹³⁶ La JF - Annual report 1980 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: F. Grümmer. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 99) Y1 - 1981 SP - 48 PB - Kernforschungsanlage CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Morek, T. A1 - Bochev, B. A1 - Kutsarova, T. T1 - Isomeric state in ¹³⁴ La JF - Annual report 1980 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: F. Grümmer. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 99) Y1 - 1981 SP - 47 PB - Kernforschungsanlage CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Beuscher, H. A1 - Gono, Y. T1 - Isomeric 10⁺ states in nuclei with N=78 JF - Proceedings of the International Conference on Nuclear Structure : Tokyo, Sept. 5 - 10, 1977 / ed. by T. Marumori. - Journal of the Physical Society of Japan ; Vol. 44, 1978 : Suppl. Y1 - 1978 N1 - International Conference on Nuclear Structure <1977, Tokyo> SP - 861 PB - Physical Soc. of Japan CY - Tokyo ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Beuscher, H. A1 - Haenni, D. R. T1 - Investigations of high spin states in ¹³⁸,¹³⁹ Nd 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 - Neskakis, A. A1 - Lieder, R. M. T1 - Investigation of ¹⁸¹⁻¹⁸⁴ OS and ¹⁸¹ Re; evidence for p-backbending JF - Annual report 1975 / Institut für Kernphysik Kernforschungsanlage Jülich / Ed. board: A. Fäßler ... Y1 - 1976 SP - 47 PB - Verlag des Forschungszentrums Jülich CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea T1 - Investigation of the preequilibrium reaction mechanism through the study of the isomer ratios ²¹¹,²¹² Po JF - Annual report 1979 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 72) Y1 - 1980 SP - 32 PB - Verlag des Forschungszentrums Jülich CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Hamacher, A. A1 - Kinast, R. T1 - Investigation of the grooves on p-contacts of position-sensitive germanium detectors JF - Annual report 1993 / Forschungszentrum Jülich Institut für Kernphysik / Baur, G. (Hrsg.). - (Berichte des Forschungszentrums Jülich ; 2879) Y1 - 1994 PB - Forschungszentrum, Zentralbibliothek CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Beuscher, H. A1 - Haenni, D. R. T1 - Investigation of high-spin states in ¹³⁹ Nd JF - Annual report 1979 / Kernforschungsanlage Jülich Institut für Kernphysik / Hrsg.: A. Fässler. - (Spezielle Berichte der Kernforschungsanlage Jülich ; 72) Y1 - 1980 SP - 46 PB - Kernforschungsanlage CY - Jülich ER - TY - JOUR A1 - Müller-Veggian, Mattea A1 - Beuscher, H. A1 - Haenni, D. R. A1 - lieder, R. M. T1 - Investigation of high-spin states in ¹³⁸,¹³⁹ Nd JF - Nuclear physics / A. 344 (1980), H. 1 Y1 - 1980 SN - 0375-9474 SP - 89 EP - 108 ER -