Numerisk analyse. Scientific computing. Matrix beregninger. Inverse problemer. Tomografi.

Per Christian Hansen (PCH) forsker i løsning af beregnings-tunge matematiske og ingeniørmæssige problemer på en computer. PCHs største interesser er løsningen af inverse problemer og tomografi inden for f.eks. geofysik, materialefysik og billedbehandling.

Per Christian Hansen's research focuses on computational methods for the solution of large mathematical and engineering problems. His main research area concerns the numerical solution of inverse problems in, e.g., tomography and iamge deblurring. His work on numerical methods for regularization is internationally recognized. He is one of the two Danish mathematicians who are Highly Cited, and his h-index is 29.

Per Christian Hansen is professor of Scientific Computing at the Department of Informatics and Mathematical Modelling. He was awarded the Danish Dr. Techn. doctoral degree in 1996 from DTU in the area of numerical analysis. He has spent several research visits at American universitise, such as Stanford University, UCLA, and Emory University.

Per Christian Hansen teaching in numerical algorithms and inverse problems.  He has published 3 books on inverse problems and more than 80 scientific papers in international journals.