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 ...

Abstract: This study aims to develop a novel pinhole collimator system for high resolution and detection efficiency imaging of mice, rats and rabbits using a 3-head SPECT camera (Philips IRIX).

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 ...

Objective: The aim of this study was to investigate the impact of collimator angle optimization in single-isocenter coplanar volume modulated arc therapy (VMAT) stereotactic radiosurgery (SRS) for ...

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 ...

PITTSBURGH, March 17, 2025 (GLOBE NEWSWIRE) -- Coherent Corp. (NYSE: COHR), a global leader in photonics, announces the launch of its 2D Collimator Array, an advanced optical assembly designed for ...