Articles > Journals > Medical journals > The Journal of Nuclear Medicine articles > November 2006

Article: On-Axis Sensitivity and Resolution of a Slit-Slat Collimator

Article from:
The Journal of Nuclear Medicine
Article date:
November 1, 2006
Author:
Copyright

A slit-slat collimator combines a slit along the axis of rotation with a set of axial septa, offering both magnification in the transaxial direction and complete sampling with just a circular orbit. This collimator has a sensitivity that increases for points near the aperture slit. The literature treats this collimator as having the same sensitivity as a single-pinhole collimator, ignoring the effect of the axial septa. Herein, the sensitivity and resolution of this collimator are reevaluated. Methods: Experimental and Monte Carlo methods are used to determine the sensitivity and resolution in both the transaxial and axial directions as a function of distance from the slit (h). Eight ...

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