Title :
Compensation of tissue absorption in emission tomography
Author :
Bellini, Sandro ; Piacentini, Maurizio ; Cafforio, Ciro ; Rocca, Fabio
Author_Institution :
Politecnico di Milano, Milan, Italy
fDate :
6/1/1979 12:00:00 AM
Abstract :
This paper presents a technique for overcoming the problem of tissue absorption in emission tomography. Given a set of equispaced projections in the interval (0, 2π), it is possible to derive an exact formula for recovering the spectrum of the image. The formula is obtained by solving a linear partial-differential equation that links the derivatives of the spectrum with respect to absorption and spatial frequencies. Examples of the application of the technique to synthetic and real data are given.
Keywords :
Absorption; Attenuation measurement; Biomedical measurements; Collimators; Fourier transforms; Image reconstruction; Reconstruction algorithms; Subspace constraints; Telecommunications; Tomography;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
DOI :
10.1109/TASSP.1979.1163232
