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Matthias Hofmann

Room number:	224
Phone:	+49-7071-601531
E-Mail:	matthias.hofmann

Matthias Hofmann

Position: PhD Student Unit: Alumni Schölkopf

Publications

Articles (6):
•	Hofmann M , Bezrukov I , Mantlik F , Aschoff P , Steinke F , Beyer T , Pichler BJ and Schölkopf B (September-2011) MRI-Based Attenuation Correction for Whole-Body PET/MRI: Quantitative Evaluation of Segmentation- and Atlas-Based Methods Journal of Nuclear Medicine 52(9) 1392-1399.
•	Mantlik F , Hofmann M , Werner MK , Sauter A , Kupferschläger J , Schölkopf B , Pichler BJ and Beyer T (May-2011) The effect of patient positioning aids on PET quantification in PET/MR imaging European Journal of Nuclear Medicine and Molecular Imaging 38(5) 920-929.
•	Boss A , Bisdas S , Kolb A , Hofmann M , Ernemann U , Claussen CD , Pfannenberg C , Pichler B , Reimold M and Stegger L (August-2010) Hybrid PET/MRI of Intracranial Masses: Initial Experiences and Comparison to PET/CT Journal of Nuclear Medicine 51(8) 1198-1205.
•	Boss A , Kolb A , Hofmann M , Bisdas S , Nägele T , Ernemann U , Stegger L , Rossi C , Schlemmer H-P , Pfannenberg C , Reimold M , Claussen CD , Pichler B and Klose U (May-2010) Diffusion Tensor Imaging in a Human PET/MR Hybrid System Investigative Radiology 45(5) 270-274.
•	Hofmann M , Pichler B , Schölkopf B and Beyer T (March-2009) Towards quantitative PET/MRI: a review of MR-based attenuation correction techniques European Journal of Nuclear Medicine and Molecular Imaging 36(Supplement 1) 93-104.
•	Hofmann M , Steinke F , Scheel V , Charpiat G , Farquhar J , Aschoff P , Brady M , Schölkopf B and Pichler BJ (October-2008) MRI-Based Attenuation Correction for PET/MRI: A Novel Approach Combining Pattern Recognition and Atlas Registration Journal of Nuclear Medicine 49(11) 1875-1883.
Conference papers (3):
•	Hofmann M , Schölkopf B , Bezrukov I and Cahill ND (September-2009) Incorporating Prior Knowledge on Class Probabilities into Local Similarity Measures for Intermodality Image Registration In: PMMIA 2009, Workshop on Probabilistic Models for Medical Image Analysis, 220-231.
•	Lee D , Hofmann M , Steinke F , Altun Y , Cahill ND and Schölkopf B (June-2009) Learning the Similarity Measure for Multi-Modal 3D Image Registration IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2009), IEEE Service Center, Piscataway, NJ, USA, 186-193.
•	Charpiat G , Hofmann M and Schölkopf B (October-2008) Automatic Image Colorization Via Multimodal Predictions In: ECCV 2008, 10th European Conference on Computer Vision, Springer, Berlin, Germany, 126-139.
Contributions to books (2):
•	Charpiat G , Hofmann M and Schölkopf B : Kernel methods in medical imaging, -. In: Handbook of Biomedical Imaging, (Ed) N. Paragios, Springer, Berlin, Germany, (June-2012). in press
•	Charpiat G , Bezrukov I , Hofmann M , Altun Y and Schölkopf B : Machine Learning Methods for Automatic Image Colorization, 395-418. In: Computational Photography: Methods and Applications, (Ed) R. Lukac, CRC Press, Boca Raton, FL, USA, (2011).
Posters (11):
•	Bezrukov I , Schmidt H , Mantlik F , Schwenzer N , Hofmann M , Schölkopf B and Pichler BJ (October-2011): Atlas- and Pattern Recognition Based Attenuation Correction on Simultaneous Whole-Body PET/MR, 2011 IEEE Nuclear Science Symposium, Medical Imaging Conference (NSS-MIC 2011), Valencia, Spain.
•	Mantlik F , Hofmann M , Bezrukov I , Schmidt H , Kolb A , Beyer T , Reimold M , Schölkopf B and Pichler BJ (October-2011): Evaluation and Optimization of MR-Based Attenuation Correction Methods in Combined Brain PET/MR, 2011 IEEE Nuclear Science Symposium, Medical Imaging Conference (NSS-MIC 2011), Valencia, Spain.
•	Bezrukov I , Hofmann M , Aschoff P , Beyer T , Mantlik F , Pichler BJ and Schölkopf B (November-2010): Attenuation Correction for Whole Body PET/MR: Quantitative Evaluation and Lung Attenuation Estimation with Consistency Information, 2010 Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2010), Knoxville, TN, USA.
•	Kolb A , Hofmann M , Sauter A , Liu CC , Schölkopf B and Pichler BJ (November-2010): PET/MRI: Observation of Non-Isotropic Positron Distribution in High Magnetic Fields and Its Diagnostic Impact, 2010 Nuclear Science Symposium and Medical Imaging Conference, 2010(M18-119) 1.
•	Kolb A , Hofmann M , Sauter A , Liu C-C , Eriksson LA and Pichler BJ (September-2010): Inhomogeneous Positron Range Effects in High Magnetic Fields might Cause Severe Artefacts in PET/MRI, 2010 World Molecular Imaging Congress (WMIC 2010), Kyoto, Japan.
•	Mantlik F , Hofmann M , Kupferschläger J , Werner MK , Pichler BJ and Beyer T (June-2010): The effect of positioning aids on PET quantification following MR-based attenuation correction (AC) in PET/MR imaging, Journal of Nuclear Medicine, 51(Supplement 2) 1418.
•	Kolb A , Hofmann M , Sossi V , Wehrl H , Sauter A , Schmid A , Schlemmer H-P , Claussen CD and Pichler BJ (October-2009): Clinical PET/MRI-System and Its Applications with MRI Based Attenuation Correction, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2009), 2009 1.
•	Kolb A , Hofmann M , Sossi V , Wehrl HF , Sauter A , Schmid A , Judenhofer MS , Schlemmer H-PW , Claussen C and Pichler BJ (September-2009): Initial Data from a first PET/MRI-System and its Applications in Clinical Studies Using MRI Based Attenuation Correction, 2009 World Molecular Imaging Congress, 2009 1200.
•	Hofmann M , Steinke F , Bezrukov I , Kolb A , Aschoff P , Lichy M , Erb M , Nägele T , Brady M , Schölkopf B and Pichler BJ (April-2009): MR-Based Attenuation Correction for PET/MR, 17th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM 2009), Honolulu, HI, USA.
•	Scheel V , Hofmann M , Rehfeld N , Judenhofer MS , Claussen CD and Pichler BJ (November-2007): Evaluation of Deformable Registration Methods for MR-CT Atlas Alignment, 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2007), 2007(M13-121) 1.
•	Hofmann M , Steinke F , Scheel V , Charpiat G , Brady M , Schölkopf B and Pichler BJ (November-2007): MR-Based PET Attenuation Correction: Method and Validation, 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2007), 2007(M16-6) 1-2.
Theses (1):
•	Hofmann M : A Machine Learning Approach for Estimating the Attenuation Map for a Combined PET/MR Scanner, Max-Planck Institute for Biological Cybernetics, Tübingen, Germany, (2007). Diplom thesis
Talks (4):
•	Mantlik F , Hofmann M , Bezrukov I , Kolb A , Beyer T , Reimold M , Pichler BJ and Schölkopf B (November-2010): Comparative Quantitative Evaluation of MR-Based Attenuation Correction Methods in Combined Brain PET/MR, 2010 Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2010), Knoxville, TN, USA(M08-4).
•	Hofmann M , Steinke F , Aschoff P , Lichy M , Brady M , Schölkopf B and Pichler BJ (October-2008): MR-Based PET Attenuation Correction: Initial Results for Whole Body, Medical Imaging Conference, Dresden, Germany.
•	Hofmann M , Steinke F , Scheel V , Brady M , Schölkopf B and Pichler BJ (September-2007): MR-Based PET Attenuation Correction: Method and Validation, Joint Molecular Imaging Conference 2007, Providence, RI, USA.
•	Hofmann M , Steinke F , Judenhofer MS , Claussen CD , Schölkopf B and Pichler BJ (November-2006): A Machine Learning Approach for Determining the PET Attenuation Map from Magnetic Resonance Images, IEEE Medical Imaging Conference 2006, San Diego, CA, USA.
Patent (1):
•	Hofmann M , Schölkopf B , Steinke F and Pichler BJ : MR/PET Attenuation Correction, (July-2006).