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Titolo:
COMPARATIVE-ASSESSMENT OF 9 SCATTER CORRECTION METHODS BASED ON SPECTRAL-ANALYSIS USING MONTE-CARLO SIMULATIONS
Autore:
BUVAT I; RODRIGUEZVILLAFUERTE M; TODDPOKROPEK A; BENALI H; DIPAOLA R;
Indirizzi:
INST GUSTAVE ROUSSY,INSERM,U66,39 RUE CAMILLE DESMOULINS F-94805 VILLEJUIF FRANCE UNIV COLL LONDON,DEPT MED PHYS LONDON ENGLAND
Titolo Testata:
The Journal of nuclear medicine
fascicolo: 8, volume: 36, anno: 1995,
pagine: 1476 - 1488
SICI:
0161-5505(1995)36:8<1476:CO9SCM>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDICAL IMAGE SEQUENCES; COMPENSATION;
Keywords:
SCATTER CORRECTION; SINGLE-PHOTON EMISSION COMPUTED TOMOGRAPHY; SPECTRAL ANALYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
I. Buvat et al., "COMPARATIVE-ASSESSMENT OF 9 SCATTER CORRECTION METHODS BASED ON SPECTRAL-ANALYSIS USING MONTE-CARLO SIMULATIONS", The Journal of nuclear medicine, 36(8), 1995, pp. 1476-1488

Abstract

We compared nine scatter correction methods based on spectral analysis which process SPECT projections. Methods: Monte Carlo simulation wasused to generate histories of photons emitted from a realistic Tc-99mphantom. A particular projection was considered. Information regarding the history, location and energy of the photons detected in this projection was analyzed to test the assumptions underlying each scatter correction method. Relative and absolute quantification and signal-to-noise ratio were assessed for each scatter corrected image. Results: For the simulated data, two methods do not enable activity quantification. Among the methods requiring some parameters to be calibrated, the dual-energy window method shows the best compromise between accuracy and ease of implementation but introduces a bias in relative quantification. In this respect, a triple-energy window technique is more accurate than the dual-window method. A factor analysis approach results in more stable quantitative accuracy (error similar to 10%) for a wide range of activity but requires a more sophisticated acquisition mode (30 energy windows). Conclusion: These results show that a scatter correction method using spectral analysis can be used to substantially improve accurate quantification.

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Documento generato il 01/10/20 alle ore 15:46:32