Title :
MR-based attenuation correction for PET using an Ultrashort Echo Time (UTE) sequence
Author :
Keereman, Vincent ; Vandenberghe, Stefaan ; De Deene, Yves ; Luypaert, Robert ; Broux, Tom ; Lemahieu, Ignace
Author_Institution :
MEDISIP, Department of Electronics and Information Systems, Ghent University-IBBT-IBiTech, De Pintelaan 185, B-9000, Belgium
Abstract :
One of the limitations of a multimodality PET/MR scanner is the lack of an attenuation map to correct the PET image for attenuation. Some methods have been developed for deriving the attenuation map from a magnetic resonance image. However, the very low signal intensity of cortical bone in images acquired with conventional MR sequences makes it difficult to distinguish this tissue type from air, while they have strongly different attenuation coefficients.
Keywords :
Attenuation; Biological tissues; Bones; Image segmentation; Magnetic resonance; Magnetic resonance imaging; Positron emission tomography; Protons; Rendering (computer graphics); Visualization;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2008.4774461
