Topic: Dual Domain Neural Networks for Sparse X-ray Computed Tomography.
Speaker: Theodor Cheslerean-Boghiu, Lasser Group
Date and Time: Tuesday, 4 May 2021, 1:00 pm
Abstract: Sparse sampling in X-ray Computed Tomography (CT) is an interesting option towards reducing dose. Recently, the success of deep learning techniques in a lot of medical imaging applications has prompted an increased interest in data-driven tomographic reconstruction algorithms. Nevertheless, most of the proposed solutions boil down to denoising steps performed either pre-reconstruction on the sinogram or post-reconstruction on the reconstructed image, with no reconstruction being performed as part of the network model.
In this presentation, I will talk about an improved deep neural network architecture (DNN) which combines a fine-tuned Filtered Backprojection (FBP) operation with a dual domain filtering step applied on both the sinogram and reconstructed image to produce artifact-free reconstructions from sparse data and we present its performance potential in experiments with clinical data.
FURTHER PROGRAM SUMMER TERM 2021
|27 April 2021||1:00 pm||Ezequiel de la Rosa||GCB Student||Differentiable Deconvolution for Improved Stroke Perfusion Analysis.|
|4 May 2021||1:00 pm||Theodor Cheslerean-Boghiu||Lasser Group||Dual Domain Neural Networks for Sparse X-ray Computed Tomography.|
|11 May 2021||1:00 pm||Mirko Riedel||Herzen Group||High Resolution Phase-Contrast Imaging at the PETRA III Synchrotron.|
|18 May 2021||1:00 pm||Christian Sigl||Dietz Group||Programmable Icosahedral Shell System Based on the Principle of Viral Capsids.|
|25 May 2021||1:00 pm||Farah Najdi||Djabali Group||Impact of Progerin Expression on Adipogenesis of Hutchinson Gilford Progeria Skin Derived Precursor Cells.|
|1 June 2021||1:00 pm||Lukas Hiendlmeier||Wolfrum Group||4D Printing and Self-Folding - A Possbility to Enhance an Electrical Nerve Interface.|
|8 june 2021||1:00 pm||Jonas Geißdörfer||Hemmert Group||Simulation of the Electric Excitability of Auditory Nerve Fibers Stimulated with Multipolar Cochlear Implant Electrode Configurations.|
|15 June 2021||1:00 pm||Max Weirather||Gleich Group||Modular EMG Amplifier.|
|22 June 2021||1:00 pm||Philipp Braun||Gleich Group||Inductive Stimulation of the Phrenic Nerve.|
|29 June 2021||1:00 pm||Lukas Driendl||Hemmert Group||Modeling of Neural Adaption in Auditory Nerve Fibers.|
|6 July 2021||1:00 pm||Nico Linhart||Gleich Group||Development of a Testing System for an Invasive Blood Pressure Measurement Module.|
|13 July 2021||1:00 pm||Erdal Pekel||Lasser Group||Robotic X-ray CT Imaging.|
|20 July 2021||1:00 pm||Elena Vehns||Djabali Group||Combination Treatment of Hutchinson-Gildford Progeria Syndrome.|