Sökning: "DIRA-3D"

Hittade 2 uppsatser innehållade ordet DIRA-3D.

1. 1. Implementation of the Weighted Filtered Backprojection Algorithm in the Dual-Energy Iterative Algorithm DIRA-3D

   Master-uppsats, Linköpings universitet/Institutionen för systemteknik

   Författare :Markus Tuvesson; [2021]
   Nyckelord :wFBP; weighted Filtered Backprojection; DIRA-3D;

   Sammanfattning : DIRA-3D is an iterative model-based reconstruction method for dual-energy helical CT whose goal is to determine the material composition of the patient from accurate linear attenuation coefficients (LACs). Possible applications are, for example, to aid in calculations of radiation transport and dose calculations in brachytherapy with low energy photons, and in proton therapy. LÄS MER

3. 2. Extension of DIRA (Dual-Energy Iterative Algorithm) to 3D Helical CT

   Master-uppsats, Linköpings universitet/Datorseende

   Författare :Magnus Björnfot; [2017]
   Nyckelord :PI-method; DIRA; DECT;

   Sammanfattning : There is a need for quantitative CT data in radiation therapy. Currently there are only few algorithms that address this issue, for instance the commercial DirectDensity algorithm. In scientific literature, an example of such an algorithm is DIRA. LÄS MER