291. Study of Experimentally-Made Fan Beam Collimator for Single Head Gamma Camera

Design and clinical utility of a fan beam collimator for SPECT imaging of the head.

A long bore fan beam collimator for imaging the head was designed and constructed for a SPECT system with a rotating scintillation camera. In order to avoid the patient's shoulder during rotation of the camera with a thick camera housing, the long bore design is necessary to allow the collimator to get close to the patient's head for improved spatial resolution. Operating at the minimum radius ...

Fan-beam reconstruction algorithm for a spatially varying focal length collimator

Fan-beam collimators are used in single-photon-emission computed tomography (SPECT) to improve the sensitivity for imaging of small organs. The disadvantage of fan-beam collimation is the truncation of projection data surrounding the organ of interest or, in those cases of imaging large patients, of the organ itself, producing reconstruction artifacts. A spatially varying focal length fan-beam ...

Optimization of a parallel hole collimator/CdZnTe gamma-camera architecture for scintimammography.

PURPOSE Small field-of-view CdZnTe (CZT) gamma cameras are increasingly studied for breast lesion detection to complement mammography or ultrasonographic findings. However, in classical collimation configurations, they remain limited by the trade-off between spatial resolution and sensitivity. The HiSens architecture was proposed to overcome these limitations. Using an accurate 3D localization ...

Collimator performance for scintillation camera systems.

Modeling High Energy (I-131) Pinhole Collimator for Small Animal Gamma Camera by Monte Carlo Simulation

a Nuclear Medicine lab, Korea Institute of Radiologic & Medical Sciences b Department of Radiology science, Yonsei University, c Department of Radiology science, Korea University * Corresponding author: [email protected]