Evaluation of the attenuation properties of MR equipment for its use in a whole-body PET/MR scanner

Physics in Medicine and Biology
Gaspar DelsoSibylle I Ziegler

Abstract

The combination of magnetic resonance imaging (MR) and positron emission tomography (PET) scanners can provide a powerful tool for clinical diagnosis and investigation. Among the challenges of developing a combined scanner, obtaining attenuation maps for PET reconstruction is of critical importance. This requires accounting for the presence of MR hardware in the field of view. The attenuation introduced by this hardware cannot be obtained from MR data. We propose the creation of attenuation models of MR hardware, to be registered into the MR-based attenuation map prior to PET reconstruction. Two steps were followed to assess the viability of this method. First, transmission and emission measurements were performed on MR components (RF coils and medical probes). The severity of the artifacts in the reconstructed PET images was evaluated. Secondly, a high-exposure computed tomography (CT) scan was used to obtain a model of a head coil. This model was registered into the attenuation map of PET/CT scans of a uniform phantom fitted with the coil. The resulting PET images were compared to the PET/CT reconstruction in the absence of coils. The artifacts introduced by misregistration of the model were studied. The transmission scans re...Continue Reading

References

Apr 1, 1995·Physics in Medicine and Biology·N L ChristensenK Fetterly
Jan 10, 2003·The British Journal of Radiology·Paul K MarsdenDiana Cash
Jul 27, 2006·Technology in Cancer Research & Treatment·A J LucasT A Carpenter
Feb 20, 2008·European Journal of Nuclear Medicine and Molecular Imaging·Thomas BeyerAndreas Bockisch
Aug 20, 2008·Radiology·Heinz-Peter W SchlemmerClaus D Claussen
Oct 18, 2008·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·Matthias HofmannBernd J Pichler

❮ Previous
Next ❯

Citations

Feb 11, 2011·European Journal of Nuclear Medicine and Molecular Imaging·Frederic MantlikThomas Beyer
Jun 21, 2011·European Journal of Nuclear Medicine and Molecular Imaging·Matthias EiberAmbros J Beer
May 25, 2013·European Journal of Nuclear Medicine and Molecular Imaging·Michael SouvatzoglouAmbros J Beer
Aug 10, 2012·Magma·Vincent KeeremanStefaan Vandenberghe
Nov 28, 2012·Magma·Gudrun WagenknechtHans Herzog
Feb 28, 2013·Investigative Radiology·Harald H QuickMichael Lell
Aug 6, 2011·Medical Physics·Lawrence R MacDonaldPaul E Kinahan
May 9, 2012·Medical Physics·Harald BraunHarald H Quick
Oct 14, 2011·Medical Physics·Habib Zaidi, Alberto Del Guerra
Aug 10, 2013·Medical Physics·René KartmannHarald H Quick
Jul 6, 2014·Medical Physics·Daniel H PaulusHarald H Quick
Mar 22, 2014·European Journal of Nuclear Medicine and Molecular Imaging·David Izquierdo-GarciaZahi A Fayad
Jan 17, 2014·Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging·R BoellaardA A Lammertsma
Nov 14, 2013·Der Radiologe·U I AttenbergerS O Schoenberg
Mar 10, 2016·PET Clinics·David Izquierdo-Garcia, Ciprian Catana
Feb 22, 2012·Insights Into Imaging·Thomas BeyerDavid W Townsend
Nov 28, 2012·Seminars in Nuclear Medicine·Ilja BezrukovBernd J Pichler
Aug 29, 2012·Zeitschrift für medizinische Physik·Axel Martinez-Möller, Stephan G Nekolla
Jul 17, 2012·Magnetic Resonance Imaging·Thomas E YankeelovJohn C Gore
May 16, 2013·Insights Into Imaging·P AppenzellerP Veit-Haibach
Oct 22, 2011·Lancet Neurology·A Jon StoesslVesna Sossi
Mar 5, 2016·EJNMMI Research·Florian BütherLars Stegger
Dec 18, 2013·Journal of Magnetic Resonance Imaging : JMRI·Harald H Quick
Apr 7, 2015·Seminars in Nuclear Medicine·Ronald Boellaard, Harald H Quick
Oct 8, 2014·European Radiology·Isabel DregelyMarkus Schwaiger
Jun 28, 2016·Journal of Magnetic Resonance Imaging : JMRI·Dong Ho Lee, Jeong Min Lee
May 3, 2018·European Radiology·Felix NensaUNKNOWN European Association of Nuclear Medicine (EANM) Cardiovascular Committee
Jan 20, 2015·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Hye Jin YooJeong Min Lee
Jul 7, 2015·PloS One·Marcelo A QueirozPatrick Veit-Haibach
Jan 13, 2018·Physics in Medicine and Biology·Christoph W LercheN Jon Shah

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cajal Bodies & Gems

Cajal bodies or coiled bodies are dense foci of coilin protein. Gemini of Cajal bodies, or gems, are microscopically similar to Cajal bodies. It is believed that Cajal bodies play important roles in RNA processing while gems assist the Cajal bodies. Find the latest research on Cajal bodies and gems here.