Image quality assessment using NEMA NU 4/2008 standards in small animal PET scanner

Rodrigo Modesto Gadelha Gontijo; Andréa Vidal Ferreira; Juliana Batista Silva; Marcelo Henrique Mamede

doi:10.15392/bjrs.v7i2A.580

Authors

Rodrigo Modesto Gadelha Gontijo Center of Nuclear Technology Development (CDTN/CNEN); Federal University of Minas Gerais (UFMG).
Andréa Vidal Ferreira Center of Nuclear Technology Development (CDTN/CNEN);
Juliana Batista Silva Center of Nuclear Technology Development (CDTN/CNEN);
Marcelo Henrique Mamede Center of Nuclear Technology Development (CDTN/CNEN); Federal University of Minas Gerais (UFMG)

DOI:

https://doi.org/10.15392/bjrs.v7i2A.580

Keywords:

Image Quality, Positron Emission Tomography, NEMA.

Abstract

In Brazil, there are few microPET in use and a quality control protocols standardization are needed to harmonize their use in the research field. Thus, the purpose of this study is to characterize the image quality performance of the microPET scanner (LabPET 4, GE healthcare Technologies, Waukesha, WI) using the NEMA NU 4/ 2008 standards and specific phantom. The NEMA image-quality (IQ) phantom consists of 3 different regions to analyze distinct characteristics: image noise (%SD), expressed as percentage SD in a uniform region (%SD), recovery coefficient (RC) and Spill-over (SOR) in air and water. The IQ phantom was filled with 18F-FDG calibrated at the beginning of acquisition, placed in the center of the field-of-view (FOV) and measured with the typical whole body imaging protocol. The images were reconstructed with different reconstruction methods (FBP-2D; MLEM-3D and OSEM-3D); with and without high resolution (HR) when possible. The results were compared. The LabPET 4 system produces appropriate image and with performance according to the literature. The present study is an initial step to verify the NEMA NU 4/2008 use in the Brazilian scenario for further standardization.

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Author Biographies

Rodrigo Modesto Gadelha Gontijo, Center of Nuclear Technology Development (CDTN/CNEN); Federal University of Minas Gerais (UFMG).

Radiopharmaceuticals Research and Production Unit, Center of Nuclear Technology Development (CDTN/CNEN);

Department of Anatomy and Imaging, Federal University of Minas Gerais (IMA/UFMG)

Andréa Vidal Ferreira, Center of Nuclear Technology Development (CDTN/CNEN);

Radiopharmaceuticals Research and Production Unit, Center of Nuclear Technology Development (CDTN/CNEN);

Department of Anatomy and Imaging, Federal University of Minas Gerais (IMA/UFMG).

Juliana Batista Silva, Center of Nuclear Technology Development (CDTN/CNEN);

Radiopharmaceuticals Research and Production Unit, Center of Nuclear Technology Development (CDTN/CNEN);

Marcelo Henrique Mamede, Center of Nuclear Technology Development (CDTN/CNEN); Federal University of Minas Gerais (UFMG)

Radiopharmaceuticals Research and Production Unit, Center of Nuclear Technology Development (CDTN/CNEN);

Department of Anatomy and Imaging, Federal University of Minas Gerais (IMA/UFMG)

References

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