In recent years, more and more detector systems utilizing Compton scattering effect to detect
gamma rays have been developed due to their potential for improved image sensitivity …

There is an ever-growing need for instrumentation that provides both high-resolution and
sensitive volumetric gamma-ray imaging capabilities across a wide range of photon …

Through its ability to reconstruct high energy (up to several MeV) radiation distributions
without using thick mechanical collimation, the Compton camera has been used in many …

We report the development of a gamma-ray imaging device, named Large-Area Hybrid
Gamma Imager (LAHGI), featuring high imaging sensitivity and good imaging resolution …

Mechanical collimation commonly uses the photoelectric effect to reconstruct radiation
images. Electronic collimation (ie Compton camera) using Compton scattering has been …

A compact Compton camera with a 4π field of view (FOV) was manufactured using the
design parameters optimized with the effective choice of gamma-ray interaction order …

Mechanical collimation with photon absorption and electronic collimation using Compton
scattering are combined to form a cubic gamma camera with an active collimator. The …

We study the effects of energy threshold and dead time on the sensitivity and image
resolution of the Compton camera. The simulation model includes the decay times, detection …

A portable active collimator using systematically patterned scintillators was constructed and
its performance evaluated. In the conventional passive radiation collimation method, single …

As the γ-ray energy increases, a reconstructed image becomes noisy and blurred due to the
penetration of the γ-ray through the coded mask. Therefore, the thickness of the coded mask …