Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification
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, c...
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| Format: | Article |
| Language: | English |
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2018-01-01
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| Series: | Brazilian Journal of Radiation Sciences |
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| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/332 |
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| author | Samira Marques Carvalho Ana Paula Marques Costa Celso Dario Ramos Sérgio Querino Brunetto Daniel Alexandre Baptista Bonifácio |
| author_facet | Samira Marques Carvalho Ana Paula Marques Costa Celso Dario Ramos Sérgio Querino Brunetto Daniel Alexandre Baptista Bonifácio |
| author_sort | Samira Marques Carvalho |
| collection | DOAJ |
| description | 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 image, as required by the Brazilian guideline, the image quantification accuracy can be improved if the counts density in calibration measurements is considered.
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| format | Article |
| id | doaj-art-e958245f159049a5a86f71821cbc2e20 |
| institution | DOAJ |
| issn | 2319-0612 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj-art-e958245f159049a5a86f71821cbc2e202025-08-20T02:50:59ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122018-01-016110.15392/bjrs.v6i1.332Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantificationSamira Marques Carvalho0Ana Paula Marques Costa1Celso Dario Ramos2Sérgio Querino Brunetto3Daniel Alexandre Baptista Bonifácio4Comissão Nacional de Energia NuclearServiço de Medicina Nuclear, SMN/HC-UNICAMPServiço de Medicina Nuclear, SMN/HC-UNICAMPCentro de Engenharia Biomédica, CEB/UNICAMPInstituto de Radioproteção e Dosimetria, IRD/CNENIodine-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 image, as required by the Brazilian guideline, the image quantification accuracy can be improved if the counts density in calibration measurements is considered. https://bjrs.org.br/revista/index.php/REVISTA/article/view/332SPECTcalibrationuncertaintiesquantification accuracy. |
| spellingShingle | Samira Marques Carvalho Ana Paula Marques Costa Celso Dario Ramos Sérgio Querino Brunetto Daniel Alexandre Baptista Bonifácio Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification Brazilian Journal of Radiation Sciences SPECT calibration uncertainties quantification accuracy. |
| title | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification |
| title_full | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification |
| title_fullStr | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification |
| title_full_unstemmed | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification |
| title_short | Impact of the counts density of calibration image and the image reconstruction parameters in 131I SPECT image quantification |
| title_sort | impact of the counts density of calibration image and the image reconstruction parameters in 131i spect image quantification |
| topic | SPECT calibration uncertainties quantification accuracy. |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/332 |
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