A complex dual-modality kidney phantom for renal biopsy studies

摘要

We developed a reliable and repeatable process to create hyper-realistic, kidney phantoms with tunable image visibilityunder ultrasound (US) and CT imaging modalities. A methodology was defined to create phantoms that could be producedfor renal biopsy evaluation. The final complex kidney phantom was devised containing critical structures of a kidney:kidney cortex, medulla, and ureter. Simultaneously, some lesions were integrated into the phantom to mimic the presenceof tumors during biopsy. The phantoms were created and scanned by ultrasound and CT scanners to verify the visibilityof the complex internal structures and to observe the interactions between material properties. The result was a successfuladvancement in knowledge of materials with ideal acoustic and impedance properties to replicate human organs for thefield of image-guided interventions.