Explore the complex challenges of identifying internal structures in X-ray tomography with “Poorly Visible Media in X-Ray Tomography.” This volume from the Inverse and Ill-Posed Problems Series delves into finding crucial information about unknown media, specifically focusing on the contact boundaries between different materials. Using a mathematical model based on the linear Boltzmann equation and specific boundary conditions, this book presents a comprehensive study. Discover theoretical advancements, practical numerical methods, and algorithm testing, all supported by theorems, computer simulations, and detailed tables. Essential reading for researchers and practitioners in tomography and inverse problems, seeking advanced insights and solutions.