Essays about: "Scan bias"

Found 3 essays containing the words Scan bias.

1. 1. Optimisation of line of sight matching to obtain wind vectors from the SIW satellite

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Author : Theresia Hestad; [2021]
   Keywords : Remote sensing; Wind measurements; Middle atmosphere; Retrieval; Scan bias; Satellite;

   Abstract : SIW, Stratospheric Inferred Winds, is one of the upcoming Swedish research satellites, aiming to study the winds in the middle atmosphere by measuring the Doppler shifts in molecules such as O3 with a limb viewing sub-mm spectrometer. By conducting simulations on the expected observations, the pointing sensitivity requirement of the satellite was investigated to be able to optimise the matching of the wind vectors. READ MORE

3. 2. An iterative reconstruction algorithm for quantitative tissue decomposition using DECT

   University essay from Datorseende; Tekniska högskolan

   Author : Oscar Grandell; [2012]
   Keywords : DECT; Iterative reconstruction; Tissue decomposition; Beam hardening correction;

   Abstract : The introduction of dual energy CT, DECT, in the field of medical healthcare has made it possible to extract more information of the scanned objects. This in turn has the potential to improve the accuracy in radiation therapy dose planning. READ MORE

4. 3. Protocol optimization of the filter exchange imaging (FEXI) sequence and implications on group sizes : a test-retest study

   University essay from Institutionen för informationsteknologi

   Author : Björn Lampinen; [2012]
   Keywords : DWI; diffusion; FEXI; MRI; fisher information; CRLB; active imaging;

   Abstract : Diffusion weighted imaging (DWI) is a branch within the field of magnetic resonance imaging (MRI) that relies on the diffusion of water molecules for its contrast. Its clinical applications include the early diagnosis of ischemic stroke and mapping of the nerve tracts of the brain. READ MORE