Compensating for head motion in slowly-rotating cone beam CT systems with optimization transfer based motion estimation

Matthew W. Jacobson, J. Webster Staynlan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

mage artefacts and to limit the image quality in PET. Moreover, it affects exact quantification of tracer kinetic transport processes. To overcome these limitations, different motion correction methods have already been introduced in the past. They either allow for realigning the images of the individual frames of a dynamic PET study via spatial transformations [1] or for realigning each single coincidence event of a list-mode data stream prior to image reconstruction [2]. In both cases, however, patient motion is only compensated during the emission phase of a PET acquisition. This is the case because PET scanners, with a separate radiation source (e.g. [68Ge]) for the transmission measurement, allow for acquiring the attenuation data in histogram-mode only. For an accurate motion correction, however, the patient motion occurring during the several minutes lasting transmission phase also needs to be corrected. This requires the transmission to be processed in list-mode, too. In our study we analysed the hardware and software possibilities and requirements - here of an ACS2-based PET scanner (ECAT Exact HR+, SiemenslCTI, Knoxville, Tennessee) - to enable the attenuation measurement to be processed in listmode. Together with some analysis on motion corrected phantom studies, this should demonstrate the advantages of a fully motion corrected study compared to an emission-corrected study only.

Original languageEnglish (US)
Title of host publication2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Pages5240-5245
Number of pages6
DOIs
StatePublished - 2008
Externally publishedYes
Event2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany
Duration: Oct 19 2008Oct 25 2008

Other

Other2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
CountryGermany
CityDresden
Period10/19/0810/25/08

Fingerprint

Cone-Beam Computed Tomography
cones
Head
optimization
lists
scanners
attenuation
Computer-Assisted Image Processing
image reconstruction
radiation sources
histograms
Artifacts
tracers
artifacts
acquisition
hardware
Software
Radiation
computer programs
requirements

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Jacobson, M. W., & Staynlan, J. W. (2008). Compensating for head motion in slowly-rotating cone beam CT systems with optimization transfer based motion estimation. In 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 (pp. 5240-5245). [4774416] https://doi.org/10.1109/NSSMIC.2008.4774416

Compensating for head motion in slowly-rotating cone beam CT systems with optimization transfer based motion estimation. / Jacobson, Matthew W.; Staynlan, J. Webster.

2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008. 2008. p. 5240-5245 4774416.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Jacobson, MW & Staynlan, JW 2008, Compensating for head motion in slowly-rotating cone beam CT systems with optimization transfer based motion estimation. in 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008., 4774416, pp. 5240-5245, 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008, Dresden, Germany, 10/19/08. https://doi.org/10.1109/NSSMIC.2008.4774416
Jacobson MW, Staynlan JW. Compensating for head motion in slowly-rotating cone beam CT systems with optimization transfer based motion estimation. In 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008. 2008. p. 5240-5245. 4774416 https://doi.org/10.1109/NSSMIC.2008.4774416
Jacobson, Matthew W. ; Staynlan, J. Webster. / Compensating for head motion in slowly-rotating cone beam CT systems with optimization transfer based motion estimation. 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008. 2008. pp. 5240-5245
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