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Silva-Rodríguez J, Aguiar P, Domínguez-Prado I, Fierro P, Ruibal Á. Simulated FDG-PET studies for the assessment of SUV quantification methods. Rev Esp Med Nucl Imagen Mol 2014; 34:13-8. [PMID: 25107595 DOI: 10.1016/j.remn.2014.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/08/2014] [Accepted: 07/09/2014] [Indexed: 11/30/2022]
Abstract
AIM To study in detail the accuracy and repeatability of three commonly used methods for SUV estimation in solitary pulmonary nodules. MATERIAL AND METHODS We have designed a realistic framework based on simulated FDG-PET acquisitions from an anthropomorphic activity model that included solitary pulmonary nodules (different sizes) of well-known SUV. This framework enables us to compare the SUV values obtained from the reconstructed PET images with the real SUV values. Three commonly used methods (SUVmax, SUVmean and SUV50) were used to estimate the tumor activity. RESULTS Our results showed the tumor activity was overestimated using SUVmax and clearly subestimated using SUVmean. Instead, the quantification of SUV50 showed great agreement with the simulated tumor activity and only slight subestimation was found for very small lesions. On the other hand, SUVmean showed better performance than SUV50 in terms of repeatability, providing variabilities below 5% for all tumor sizes and for injected doses as low as 111 MBq. CONCLUSIONS Our findings showed that SUV50 provided better performance for estimating accurately tumor SUV values in pulmonary nodules, but SUVmean showed better results in terms of repeatability.
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Affiliation(s)
- J Silva-Rodríguez
- Grupo de Imaxe Molecular e Oncoloxía, Instituto de Investigación Sanitarias (IDIS), Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; L2A2-USC, Facultade de Física, Universidade de Santiago de Compostela, Praza do Obradoiro, s/n, 15782, Santiago de Compostela, A Coruña, Galicia, Spain
| | - P Aguiar
- Grupo de Imaxe Molecular e Oncoloxía, Instituto de Investigación Sanitarias (IDIS), Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; In Vivo Molecular Imaging Group (IMIG), Facultade de Medicina, Universidade de Santiago de Compostela, Praza do Obradoiro, s/n, 15782, Santiago de Compostela, A Coruña, Galicia, Spain.
| | - I Domínguez-Prado
- Servicio de Medicina Nuclear, Complexo Hospitalario Universitario de Santiago de Compostela, Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain
| | - P Fierro
- Servicio de Medicina Nuclear, Complexo Hospitalario Universitario de Santiago de Compostela, Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain
| | - Á Ruibal
- Grupo de Imaxe Molecular e Oncoloxía, Instituto de Investigación Sanitarias (IDIS), Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; In Vivo Molecular Imaging Group (IMIG), Facultade de Medicina, Universidade de Santiago de Compostela, Praza do Obradoiro, s/n, 15782, Santiago de Compostela, A Coruña, Galicia, Spain; Servicio de Medicina Nuclear, Complexo Hospitalario Universitario de Santiago de Compostela, Travesía da Choupana S/N 15706, Santiago de Compostela, Galicia, Spain; Fundación Tejerina, Calle de José Abascal 40, 28003 Madrid, Spain
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