Contrast cancellation technique applied to digital x-ray imaging using silicon strip detectors.

Synthesis and characterization of Gd2O2 S: Tb3+ phosphor powder for X-ray imaging detectors

Gadolinium oxysulfide phosphor doped with trivalent terbium have been synthesized using urea homogenous precipitation and followed by sulfurization at 800 °C under argon atmosphere. Structural and morphological of synthesized phosphor powder were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectrometry (FT-IR). Hexagonal structure ...

Characterization and Optimization of Silicon-strip Detectors for Mammography and Computed Tomography

The goal in medical x-ray imaging is to obtain the image quality required for a given detection task, while ensuring that the patient dose is kept as low as reasonably achievable. The two most common strategies for dose reduction are: optimizing incident x-ray beams and utilizing energy information of transmitted beams with new detector techniques (spectral imaging). In this thesis, dose optimi...

A Digital X - ray Imaging System based on Silicon Strip Detectors 10 working in Edge - on Configuration

A "Bioscope" system using double-sided silicon strip detectors and self-triggering read-out chips

The components and the design of a 640 by 640 channel radiation detection system based on double-sided silicon strip detectors and self-triggering read-out chips are presented. The system has been designed for applications in autoradiography and X-ray imaging in medicine, biology and other fields. Images and results from first tests of the system are shown.

Spectral Computed Tomography with a Photon-Counting Silicon-Strip Detector

Computed tomography (CT) is a widely used medical imaging modality. By rotating an x-ray tube and an x-ray detector around the patient, a CT scanner is able to measure the x-ray transmission from all directions and form an image of the patient’s interior. CT scanners in clinical use today all use energy-integrating detectors, which measure the total incident energy for each measurement interval...