Title :
Correction for imperfect camera motion and resolution recovery in pinhole SPECT
Author :
Bequé, Dirk ; Vanhove, Chris ; Andreyev, Andriy ; Nuyts, Johan ; Defrise, Michel
Author_Institution :
Dept. of Nucl. Med., Katholieke Univ., Leuven, Belgium
Abstract :
Pinhole SPECT is typically applied in small animal imaging, where high spatial resolution is required for imaging small structures in a limited field of view. Care must then be taken not to lose this high resolution information in the subsequent image reconstruction process. The calibration of a pinhole camera with a slightly oscillating detector tilt and its importance for the quality of reconstructed images is investigated. Also, the potential for resolution recovery, by modeling the finite dimensions of the pinhole aperture in the reconstruction, is investigated.
Keywords :
calibration; image reconstruction; image resolution; medical image processing; single photon emission computed tomography; calibration; high spatial resolution; image acquisition; image quality; image reconstruction process; imperfect camera motion correction; pinhole SPECT; pinhole aperture modeling; resolution recovery; slightly oscillating detector tilt; small animal imaging; Animals; Apertures; Calibration; Cameras; Detectors; Geometry; High-resolution imaging; Image reconstruction; Image resolution; Spatial resolution;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Print_ISBN :
0-7803-8700-7
DOI :
10.1109/NSSMIC.2004.1462764
