This title appears in the Scientific Report :
2013
Please use the identifier:
http://dx.doi.org/10.1007/s10334-012-0353-4 in citations.
Please use the identifier: http://hdl.handle.net/2128/4998 in citations.
MRI for attenuation correction in PET: methods and challenges
MRI for attenuation correction in PET: methods and challenges
Abstract In current combined PET/MR systems, PET attenuation correction is based on MRI, since the small bore insideMRI systems and the strongmagnetic field do not permit a rotating PET transmission source or a CT device to be integrated. Unlike CTmeasurements in PET/CT scanners, the MR signal is no...
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Personal Name(s): | Wagenknecht, Gudrun (Corresponding author) |
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Kaiser, Hans-Jürgen / Mottaghy, Felix M. / Herzog, Hans | |
Contributing Institute: |
Zentralinstitut für Elektronik; ZEL Zentralinstitut für Elektronik; ZEA-2 Physik der Medizinischen Bildgebung; INM-4 |
Published in: | Magnetic resonance materials in physics, biology and medicine, 26 1, S. 99-113 |
Imprint: |
Heidelberg
Springer
2013
|
PubMed ID: |
23179594 |
DOI: |
10.1007/s10334-012-0353-4 |
Document Type: |
Journal Article |
Research Program: |
Imaging the Living Brain |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/4998 in citations.
Abstract In current combined PET/MR systems, PET attenuation correction is based on MRI, since the small bore insideMRI systems and the strongmagnetic field do not permit a rotating PET transmission source or a CT device to be integrated. Unlike CTmeasurements in PET/CT scanners, the MR signal is not directly correlated to tissue density andthus cannot be converted by a simple transformation of intensity values. Various approaches have been developed based on templates, atlas information, direct segmentation of T1-weighted MR images, or segmentation of images from special MR sequences. The advantages and disadvantages of these approaches as well as additional challenges will be discussed in this review. |