International Journal of Radiation Research

en A comparison of two low-cost 3D printing techniques for constructing phantoms from MRI breast images Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;">Background: This study aimed to test the possibility of using Magnetic Resonance (MR) images to create anthropomorphic breast phantoms for X-ray imaging and to compare the performance of fused deposition modeling (FDM) and 2D inkjet printing with radiopaque inks. Materials and Methods: Two physical phantoms were produced using either an inkjet printer on paper or an FDM technique, both based on clinical MR data. The paper phantom was printed with 1.2 g of KI dissolved in 20 ml of water. For the FDM phantom, the extrusion rate was adjusted according to clinical Hounsfield unit (HU) values. These phantoms underwent imaging using a clinical computed tomography (CT) device at two energy spectra, and their CT images were assessed in terms of HUs, histogram distributions, spectral and subjective analyses, as well as cost. Results: The objective CT analysis of the phantoms revealed that HU values and β-values, indicating the anatomical complexity of the breast parenchyma, were in line with those expected, with an advantage for the FDM-based phantom. In both cases, the β-values were close to those for clinical breast images acquired with high-resolution CT scanners. Subjective evaluation, however, indicated a need for refining the realism of the phantoms, particularly in terms of preserving the fine details. Conclusion: Breast MR Images offer the possibility of constructing breast phantoms. However, the method fails to replicate fine details in phantom CT images. Addressing this challenge requires improvement in segmentation processes and manufacturing accuracy.</div> 3D printing, fused-deposition modeling, inkjet printing, anthropomorphic breast phantoms, X-rays, magnetic resonance images. 883 890 http://ijrr.com/browse.php?a_code=A-10-1-1253&slc_lang=en&sid=1 K. Bliznakova kristina.bliznakova@mu-varna.bg 7900319475328460028488 7900319475328460028488 Yes Department of Medical Equipment, Electronic and Information Technologies in Healthcare, Medical University of Varna, Varna, Bulgaria T. Georgiev 7900319475328460028489 7900319475328460028489 No Department of Medical Equipment, Electronic and Information Technologies in Healthcare, Medical University of Varna, Varna, Bulgaria A. Sarno 7900319475328460028490 7900319475328460028490 No Dipartimento di Fisica “Ettore Pancini”, Università di Napoli Federico II, Napoli, Italy T. Teneva 7900319475328460028491 7900319475328460028491 No Department of Imaging Diagnostics, Interventional Radiology and Radiotherapy, Medical University of Varna, Bulgaria N. Dukov 7900319475328460028492 7900319475328460028492 No Department of Medical Equipment, Electronic and Information Technologies in Healthcare, Medical University of Varna, Varna, Bulgaria N. Okkalidis 7900319475328460028493 7900319475328460028493 No Morphé, Thessaloniki, Greece Zh. Bliznakov 7900319475328460028494 7900319475328460028494 No Department of Medical Equipment, Electronic and Information Technologies in Healthcare, Medical University of Varna, Varna, Bulgaria