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KMID : 1143620160200010024
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Korean Journal of Nuclear Medicine Technology
2016 Volume.20 No. 1 p.24 ~ p.27
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Development of Bladder Phantom and Image Evaluation of Lesion in the Vicinity according to Filling and Empty Bladder
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Park Chan-Rok
Kim Jae-Il
Lee Hong-Jae
Kim Jin-Eui
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Abstract
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Purpose : In this study, we evaluated image quality of lesion in the vicinity according filling and empty bladder developing bladder phantom.
Materials and Methods : Bladder phantom was developed by modifying NEMA IEC body phantom. Air-balloon was described as bladder and 6 insert were set as lesion in the vicinity bladder according to distance. The images were evaluated in terms of % BV, comparison of SUV and peak count rate (Single, Random and True count).
Results : % BV was decreased far away from bladder. There were different for SUV about 7.8 ± 3.8 % between filling
and empty bladder. True count rate was decreased about 38 %. Single and random count were increased about
44, 61%.
Conclusion : When the lesion is close to bladder, noise is increased. That’s why prior to PET-CT scan, It is important to
urinate. and It helps patient to get the accurate result.
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KEYWORD
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NEMA IEC body phantom, bladder phantom, PET-CT
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