The static phantom of international standard is widely used in the field of nuclear medicine. The demand for dynamic situations has consistently increased, since only fixed circumstances can be reproduced and evaluated until now, despite the moving conditions of the human organs. More research is necessary to address these challenges.
This study used 3D printing techniques to design dynamic cardiac phantom, taking into account the various clinical situations. It also intended to reproduce the images through dynamic cardiac flow to confirm the usefulness of the proposed technique.
The frame of dynamic cardiac phantom was produced based on the international standard phantom and a nuclear medicine dynamic cardiac phantom was produced based on the myocardium implemented by 3D printing technique. In this way, we compared the quantitative and qualitative properties of the static and the dynamic cardiac phantom, as well as the clinical and the dynamic cardiac phantom images. In the quantitative analysis of the static and the dynamic cardiac phantoms, the SRS(Summed Rest Score) was the highest in the static cardiac phantom, followed by SRS in the order of 10, 20 and 30 stroke rate in the dynamic cardiac phantom. The TPD(Total Perfusion Deficit) was the highest in the static cardiac phantom, followed by TPD in the order of 20, 10 and 30 stroke rate in the dynamic cardiac phantom. The nuclear medicine specialists assessed the images of static and dynamic cardiac phantoms and verified that the dynamic cardiac phantom images were better than the static ones.
The potential for clinical application of the proposed method was confirmed in the dynamic cardiac phantom implemented with 3D printing technique. It is believed that the objective information secures the reliability of the inspection equipment and it contributes to improve the value of diagnosis of nuclear medicine.