Title :
A study of noise and spatial resolution for 2D and 3D filtered backprojection reconstruction
Author :
De Man, Bruno ; Basu, Samit
Abstract :
We present an analysis of the benefits of distance-driven backprojection when used as part of a filtered backprojection reconstruction algorithm, and a comparison with pixel-driven backprojection. We simulated phantoms to quantify image noise and spatial resolution, and performed reconstruction using 2D fan-beam FBP and 3D FDK reconstruction. After matching the resolution for pixel-driven and distance-driven for each region, distance-driven driven backprojection resulted in up to 20% noise reduction relative to pixel-driven backprojection at matched spatial resolution, for a 42 cm×28 cm elliptical water phantom.
Keywords :
backpropagation; image denoising; image reconstruction; image resolution; medical image processing; phantoms; 28 cm; 2D fan-beam FBP; 2D filtered backprojection reconstruction algorithm; 3D filtered backprojection reconstruction algorithm; 42 cm; distance-driven backprojection; elliptical water phantom; image noise quantification; pixel-driven backprojection; spatial resolution; Algorithm design and analysis; Crosstalk; Cutoff frequency; Detectors; Filters; Geometry; Image reconstruction; Imaging phantoms; Solid modeling; Spatial resolution;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1466739
