Abstract #0899

Effect of wall elasticity on flow MRI in 3D printed models

Isil Unal¹, Duygu Dengiz², Eva Peschke¹, Echard Quandt², Mona Salehi Ravesh¹, Mariya Pravdivtseva¹, Jan-Bernd Hövener¹, and Olav Jansen¹

¹Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department for Radiology and Neuroradiology, University Medical Center Schleswig-Holstein, Kiel, Germany, ²Institute for Materials Science, Faculty of Engineering, University of Kiel, Kiel, Germany

Synopsis

2D phase-contrast (PC) MRI or 4D flow MRI allows to quantify the blood flow in vivo. However, the accuracy of these methods is influenced by many parameters. To optimize and validate these methods, patient-derived vascular models are key. Here, 3D printing is revolutionizing the manufacturing process, but realistic wall properties are essential for meaningful results. In this study, commercial elastic printing materials were used to fabricate vascular models. A tensile test was applied to all samples. Then the effect of wall elasticity on flow was investigated with 2D PC and 4D flow MRI. Wall motion was quantified using CINE MRI.

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