Radiation detector systems in nuclear medicine imaging A radiation detector system in nuclear medicine imaging is definitely a timely topic or area of research where not many papers are available in the literature of nuclear medicine imaging. Arguably, no single device can detect all kinds of radiation and no one device is useful in all situations. Understanding of the principles of radiation d...

High-purity germanium (HPGe) is a vibration-sensitive, high-resolution detector. It has been found that microphonic noise induced by vibration and electromagnetic interference from EMC causes energy resolution degradation in HPGe detectors. In this paper, to enhance the of pulse tube-cooled high purity detector, passive isolation system for portable tube cooler (PTC) was employed investigated. ...

Centre for Medical Radiation Physics (CMRP) is a research strength at the University of Wollongong, the main research theme of this centre is to develop prototype novel radiation dosimeters. Multiple detector systems have been developed by Prof Rosenfelds’ group for various radiation detector applications. This paper focuses on four current detector systems being developed and studied at CMRP. ...

The system using X-gamma coincidence technique for the standardizing radionuclide, which present simple and complex decay scheme with X-rays of energy below 100 keV has deployed by Radionuclide Laboratory (LNMRI), Brazil. work was carried a sodium iodide detector, gamma photons, in combination high purity germanium detector X-rays. Samples 65Zn 133Ba were standardized results both radionuclides...

Gamma-ray imaging with position-sensitive germanium detectors offers the advantages of excellent energy resolution, high detection efficiency, and potentially good spatial resolution. The development of the amorphous-semiconductor electrical contact technology for germanium detectors has simplified the production of these position-sensitive detectors and has made possible the use of unique dete...

ESA’s INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) will be launched in 2002. One of its two main instruments is the Spectrometer SPI. It uses 19 HPGe detectors to observe the sky in the energy range of 20 keV to 8 MeV with a resolution of ∆E/E ≈ 0.2%. Directional information is obtained using a coded mask. The expected angular resolution is about 2°. The SPI Imaging Test Setup (SP...

The imaging performance of a prototype electronically collimated single-photon emission computed tomography (SPECT) camera comprising a unique 4 x 4 germanium detector backed by an uncollimated scintillation camera has been evaluated. Three-dimensional images of cylindrical test-objects containing either 99mTc (140 keV) or 137Cs (662 keV) are reported. Electronically collimated counts were acqu...

Room-temperature detector, manufactured by the company ‘‘SPINOR’’ (Tomsk Russia) was tested for the investigations of the coherent synchrotron radiation characteristics at the bent electron beam of FLASH (Hamburg) in the wavelength region 0.5–3mm. Detector is based on a low-threshold diode and a broadband antenna with a built-in preamplifier. The detector characteristics allowed us to measure a...

Abstract Ingestion of foods and drinking water is considered the leading cause human exposure to radioactive elements that guide internal radiation doses. The concentrations distributions natural radionuclides 238 U, 232 Th, 40 K in samples yellow maize directly consumed KwaZulu-Natal province South Africa were determined estimate possible radiological hazards health. Representative collected f...