RTNCAT (Real Time NCAT): Implementing Real Time physiological movement of voxellized phantoms in GATE

P. Descourt, W. P. Segars, F. Lamare, L. Ferrer, B. Tsui, Y. Bizais, M. Bardiè, D. Visvikis

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

Abstract

GATE figures among existing MC simulation codes for emission tomography applications. Although it allows working with voxellized activity distributions it does not enable the incorporation of physiological motion in a real time sense for such distributions. This restriction causes substantial drawbacks where dynamic phenomena such as respiratory or radiotracer motion are of interest. A new C++ class, named "GateRTPhantom" has been introduced in GATE to enable simulation of physiological motion in Real Time within voxellized phantoms. These objects are managed by a class named "GateRTPhantomMgr". The new approach has been assessed using the 4D NCAT phantom. The real time implementation approach (RTNCAT: Real Time NCAT) was compared with the classic implementation of dynamic processes through the individual simulation of a number of static frames. A total of 20 frames throughout a respiratory cycle were produced (0.250ms each). The accuracy of the RTNCAT module was validated through a qualitative and quantitative comparison of 3D images containing the emission locations of single photons in the phantom. Parameters such as the total number, the mean value and the standard deviation of the number of emitted photons per voxel were evaluated. In all of these parameters a high level of agreement was observed supporting the developed approach for the real time modelling of physiological motion. In addition, practically identical times of execution were seen for the two approaches.

Original languageEnglish (US)
Title of host publication2006 IEEE Nuclear Science Symposium - Conference Record
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3163-3165
Number of pages3
ISBN (Print)1424405610, 9781424405619
DOIs
StatePublished - Jan 1 2006
Event2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD - San Diego, CA, United States
Duration: Oct 29 2006Nov 4 2006

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume5
ISSN (Print)1095-7863

Other

Other2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD
CountryUnited States
CitySan Diego, CA
Period10/29/0611/4/06

ASJC Scopus subject areas

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

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    Descourt, P., Segars, W. P., Lamare, F., Ferrer, L., Tsui, B., Bizais, Y., Bardiè, M., & Visvikis, D. (2006). RTNCAT (Real Time NCAT): Implementing Real Time physiological movement of voxellized phantoms in GATE. In 2006 IEEE Nuclear Science Symposium - Conference Record (pp. 3163-3165). [4179703] (IEEE Nuclear Science Symposium Conference Record; Vol. 5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2006.356546