A collimator is a device used for changing the direction of a light diverging from a point source into a parallel beam. The collimation of light is necessary to make spectroscopic measurements. A ...

Abstract: Due to the collimator aperture, the spatial resolution of SPECT data varies with source-to-detector distance. Since radius of detector rotation is bigger when scanning larger patients, the ...

Background: Proton Minibeam Radiation Therapy has shown to widen the therapeutic window compared to conventional radiation treatment in pre-clinical studies. The underlying biological mechanisms, ...

1 Biomedical Imaging Laboratory (BIG), Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China 2 Center for Cognitive and ...

Dedicated γ-cameras based on pixelated scintillators have long been used for breast tumor imaging. Intercrystal scattering (ICS) increases the background counting rate and degrades the image quality ...

Abstract: Previously, we proposed to use a coincidence collimator to achieve fractional-crystal resolution in positron emission tomography (PET) imaging. We have designed and fabricated a collimator ...

A collimator may be described as a device that focuses or narrows a light beam or a stream of particles to be aligned in a different direction or reduce its cross section. The collimator focuses a ...

SAN FRANCISCO--(BUSINESS WIRE)--Collimator, a modeling and simulation platform for engineers to design and test complex, mission critical systems, has been named as a High Performer on G2’s Grid ...