MR-based attenuation correction for a whole-body sequential PET/MR system

Author

Hu, Z. ; Ojha, N. ; Renisch, S. ; Schulz, V. ; Torres, I. ; Buhl, A. ; Pal, D. ; Muswick, G. ; Penatzer, J. ; Guo, T. ; Bönert, P. ; Tung, C. ; Kaste, J. ; Morich, M. ; Havens, T. ; Maniawski, P. ; Schäfer, W. ; Günther, R.W. ; Krombach, G.A. ; Shao, L.

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

3508

Lastpage

3512

Abstract

In this paper MR-based attenuation method was implemented for a clinical whole-body PET/MR system. While awaiting future clinical evaluation, the algorithm seems promising from preliminary patient data evaluation, from both qualitative PET image quality and quantification accuracy. While the 3-segment MRAC resembles the results from short PET transmission scans, future work will be to implement and validate segmentation of more tissue classes, such as cortical bone. Robustness of MR image truncation compensation and incorporation of flexible coils need to be improved.

Keywords

biomedical MRI; bone; medical image processing; motion compensation; positron emission tomography; MR image truncation compensation; MR-based attenuation correction; PET image quality; cortical bone; flexible coils; image segmentation; tissue classes; whole-body sequential PET-MR system; Attenuation; Bones; Coils; Computed tomography; Image segmentation; Lungs; Magnetic resonance imaging; Positron emission tomography; Protons; Whole-body PET;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5401802

Filename

5401802