Influence of detectors efficiency normalization on small animal PET image quality
DOI:
https://doi.org/10.15392/bjrs.v7i3.861Palabras clave:
Small Animal PET, Normalization, Image Quality, NEMA NU 4-2008Resumen
LabPET GE 4 (a small animal positron emission tomograph) image acquisition is done by 1536 independents channels. Differences in the rate counting of each channel must be corrected so as not compromise image quality. Equipment user manual recommends that normalization of the detectors efficiency be made as often as possible and always whenever there are hardware or software parameters changes - included, but not limited to channels parameters adjustments, electronic cards replacements, channels activation or inactivation or software update. This work evaluates the normalization effects on the image quality parameters. PET image acquisition were performed using recommended parameters by the NEMA NU 4-2008 standards. Image was reconstructed in different ways using different normalization files. The tests performed indicated that the image quality parameters do not vary significantly with different normalization data. Therefore, a daily routine of normalizations is not justified, suggesting a periodical frequency of one month or more for this procedure.Descargas
Referencias
YAO R.; LECOMTE R.; CRAWFORD E. Small-Animal PET: What is it, and why do we need it? Journal of Nuclear Medicine Technology. 2011. Vol. 40 nº3, pp.157-165.
NEMA - National Electrical Manufacturers Association. Performance Measurements of Small Animal Positron Emission Tomographs. Rosslyn VA; 2008 Standards Publication NU 4-2008.
GE Healthcare Technologies. Triumph Service Guide Technical Publication. Revision Draft 6, Copyright. Available at: <http://www.gehealthcare.com>. 2011.
TRETRAULT M. A., et al. System architecture of the LabPET small animal PET scanner. IEEE Transactions on Nuclear Science, 2008. Vol.55, pp. 2546-2550.
FONTAINE R., et al. The hardware and signal processing architecture of LabPETTM, a small animal APD-based digital PET scanner. IEEE Transactions on Nuclear Science, February 2009. Vol. 56, pp. 3-9.
Gamma Medica-Ideas, User Manual: Positron Emission Tomography (PET) Scanner Software - Manual for Acquisition and Processing of PET Images from the LABPET System. Software version: LABPET 1.12.0, (2010).
PMOD Tecnologies LCC, PMOD v.3.7. User Manual, (2015).
Descargas
Publicado
Número
Sección
Licencia
Derechos de autor 2019 Brazilian Journal of Radiation Sciences (BJRS)
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
Licencia: los artículos de BJRS tienen una licencia internacional Creative Commons Attribution 4.0, que permite el uso, el intercambio, la adaptación, la distribución y la reproducción en cualquier medio o formato, siempre que se otorgue el crédito correspondiente al autor o autores originales y a la fuente, proporcione un enlace a la licencia Creative Commons e indique si se realizaron cambios. Las imágenes u otros materiales de terceros en el artículo están incluidos en la licencia Creative Commons del artículo, a menos que se indique lo contrario en una línea de crédito al material. Si el material no está incluido en la licencia Creative Commons del artículo y su uso previsto no está permitido por la regulación legal o excede el uso permitido, el autor deberá obtener el permiso directamente del titular de los derechos de autor. Para ver una copia de esta licencia, visite http://creativecommons.org/licenses/by/4.0/
