Line spread function gamma camera
NettetUFOV and Camera FOV (CFOV). By summing the image parallel to the direction of the slits, a number of line-spread functions is generated. Each line-spread function is characterized by a number of peaks corresponding to the number of visible slits. The main task of the Intrinsic Spatial Resolution Nettet10. sep. 2013 · The Compton camera is a relevant imaging device for the detection of prompt photons produced by nuclear fragmentation in hadrontherapy. It may allow an improvement in detection efficiency compared to a standard gamma-camera but requires more sophisticated image reconstruction techniques. In this work, we simulate low …
Line spread function gamma camera
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NettetAn improved method for an easy, rapid measurement of the intrinsic spatial resolution of a gamma camera is presented. A simplified model was previously developed based … NettetThe quality and detail of an image obtained by gamma cameras are affected by several parameters associated with these imaging systems. These parameters include spatial resolution, sensitivity, uniformity, and contrast, and they are described here in detail. A brief description of the quality control tests for gamma cameras is also included.
Nettet1. jan. 2012 · Line spread function of a gamma camera equipped with a low-energy all-purpose parallel-hole collimator obtained in a air and b water at different distances using a 99m Tc-line source. Note that the resolution deteriorates in water due … Nettetcovering the whole surface of the camera. The line spread functions (LSF) are obtained by averaging the profiles of activity over a length shorter than 30 mm. The full width at half maximum (FWHM) and the full width at tenth of maximum (FWTM) are then measured. The pixel size must be lower than ten percent of the FWHM.
Nettet1. feb. 2014 · PDF On Feb 1, 2014, Valentina Piscopo and others published Richard S. Lawson: The Gamma Camera: ... the function ing of the gam ma camera to no ... of line spread functions from anger cameras / NettetThe influence of different spread functions S ( g0, g) on the orientation density along the skeleton line of an fcc metal is shown in Fig. 3. In this case, the glide system was {111} …
NettetDownload scientific diagram (a) Line spread function, and (b) MTF. from publication: Feasibility Study of a Lens-coupled Charge-Coupled Device Gamma Camera A …
NettetThe line spread-function (LSF) of the screen—film system has been defined as the sum of the spatial distribution of illuminance in the front and the back emulsion caused by a … for sale wells beach meNettetine spread function (LSF) and modulation transfer functions determined by the moments method was compared with those obtained directly from line spread functions. It was found that, for highest accuracy, the formulae originally described for intrinsic measurements have to be modified to take account of a more accurate description of … for sale wellington floridaNettet23. jan. 2015 · The Tc-99m and Sm-153 radionuclides as well as the triple energy window and other windows on the energy spectra along with phantoms and gamma camera have been simulated by Monte Carlo method. The amounts of FWHM and FWTM were calculated using line spread functions (LSFs). for sale well lane carlisleNettet1. jan. 2013 · (PDF) Evaluation of Major Factors Affecting Spatial Resolution of Gamma-Rays Camera Evaluation of Major Factors Affecting Spatial Resolution of Gamma-Rays Camera Journal of Analytical... for sale wellington point qldNettetCommercial gamma camera software, within the set of programs for quality control, contains dedicated applications for ... at half-maximum (FWHM) of the line spread function (LSF) or of the point spread function (PSF) with an imaging collimator installed. This measurement should be completed with the full width to the for sale wergs hallNettetThe point spread function (PSF) of a gamma camera describes the photon count density distribution at the detector surface when a point source is imaged. Knowledge of the PSF is important for computer simulation and accurate image reconstruction of single photon emission computed tomography (SPECT) images. for sale wembley waNettet1. jun. 2003 · The advantage in intrinsic resolution of CdZnTe, combined with the ultra-high resolution collimator, gives the new detector a superior line spread function which accounts for the observed image quality improvement over NaI (Tl) for this planar imaging application. PACS 29.40.Wk 07.85.Nc 87.58.Ce 87.57.Ce Keywords Cadmium zinc … digital out optical ps2