LSO background radiation as a transmission source using time of flight information

Rothfuss, H.; Panin, Vladimir; Hong, Inki; Moor, Andrew; Young, John W.; Hamill, James; Michel, Christian; Casey, Michael

doi:10.1109/nssmic.2013.6829024

2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC) 2013

DOI: 10.1109/nssmic.2013.6829024

|View full text |Cite

LSO background radiation as a transmission source using time of flight information

H. Rothfuss

Vladimir Panin²,

Inki Hong³

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2013

2014

Publication Types

Select...

Other3

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Transmission-less brain TOF PET imaging using MLACF

Panin

Bal

Defrise

et al. 2013

2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)

View full text Add to dashboard Cite

Recent theoretical investigations concluded that both activity and attenuation distributions can be obtained from PET emission TOF data alone up to the knowledge of the sinogram scaling parameter. Attenuation is recovered in the form of attenuation factors. This allows for development of a fast iterative algorithm, referred to as ML-ACF, where iterative reconstruction is performed with respect to the activity image. Attenuation is a by-product of the estimation of activity.In general, the estimation of attenuation from PET data alone is not currently necessary due to the diagnostic value of PET-CT scanning. Nevertheless, it is desirable to limit patient CT doses. CT-less PET brain imaging is currently being pursued by manufacturers. This transmission-less brain imaging uses the assumption of a uniform attenuation map. The boundary can be derived from the processing of the activity image and reconstructed without attenuation correction. In this paper we enrich this approach by exploiting this uniform attenuation map as a starting condition for MLACF iterations. The scatter correction and the proper scaling of the activity image are based on this information.The head, especially the slices close to the top of the head, is relatively small compared to account the current scanner's time resolution. Therefore it is not obvious a priori that TOF information can be exploited for brain imaging. In this paper we demonstrate that the brain image attenuation can be reconstructed by exploiting just two TOF bins, with the TOF bin size currently used on the Siemens mCT scanner. Preliminary investigations showed that the head activity image will be improved by MLACF compared to the standard CT-less processing based on a uniform attenuation.

show abstract

Transmission-less brain TOF PET imaging using MLACF

Panin

Bal

Defrise

et al. 2013

2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)

View full text Add to dashboard Cite

show abstract

A method for daily setup and quality checks of LSO:Ce based time of flight positron emission tomographs

Rothfuss

Martin

Moor

et al. 2014

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

View full text Add to dashboard Cite

Geometrical calibration of a PET-scanner-based multi-pinhole SPECT using LYSO background radiation

Wei

Wang

Dai

et al. 2014

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

LSO background radiation as a transmission source using time of flight information

Cited by 3 publications

References 8 publications

Transmission-less brain TOF PET imaging using MLACF

Transmission-less brain TOF PET imaging using MLACF

A method for daily setup and quality checks of LSO:Ce based time of flight positron emission tomographs

Geometrical calibration of a PET-scanner-based multi-pinhole SPECT using LYSO background radiation

Contact Info

Product

Resources

About