Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2018
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| _version_ | 1876462686685888512 |
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| author | Samira Marques Carvalho |
| author_facet | Samira Marques Carvalho |
| contents | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification Samira Marques Carvalho Ana Paula Marques Costa Celso Dario Ramos Sérgio Querino Brunetto Daniel Alexandre Baptista Bonifácio Biología SPECT calibration uncertainties quantification accuracy Iodine-131 (131I) has been used for diagnosis and therapy in Nuclear Medicine Centers in Brazil for more than 50 years. The present study aims to investigate the impact of the counts density and the reconstruction parameters in the calibration factor determination and in the image quantification, considering the reality of Brazilian dosimetry studies. For this task, images were quantified using calibration images with high and low counts density and reconstructed adopting two different parameters approaches, usually employed in patients images. SPECT quantification results presented in this work follow other previous 131I SPECT studies and suggest that, due to the long time interval between the first e last images, as required by the Brazilian guideline, the image quantification accuracy can be improved if the counts density of calibration images is considered. 2018 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280820008 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.1 Vol.6 |
| format | Artículo científico |
| id | redalyc_722280820008 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification Samira Marques Carvalho Biología SPECT calibration uncertainties quantification accuracy Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification Samira Marques Carvalho Ana Paula Marques Costa Celso Dario Ramos Sérgio Querino Brunetto Daniel Alexandre Baptista Bonifácio Biología SPECT calibration uncertainties quantification accuracy Iodine-131 (131I) has been used for diagnosis and therapy in Nuclear Medicine Centers in Brazil for more than 50 years. The present study aims to investigate the impact of the counts density and the reconstruction parameters in the calibration factor determination and in the image quantification, considering the reality of Brazilian dosimetry studies. For this task, images were quantified using calibration images with high and low counts density and reconstructed adopting two different parameters approaches, usually employed in patients images. SPECT quantification results presented in this work follow other previous 131I SPECT studies and suggest that, due to the long time interval between the first e last images, as required by the Brazilian guideline, the image quantification accuracy can be improved if the counts density of calibration images is considered. 2018 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280820008 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.1 Vol.6 |
| title | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification |
| topic | Biología SPECT calibration uncertainties quantification accuracy |
| url | https://www.redalyc.org/articulo.oa?id=722280820008 |